Original Papers (原著論文)


2. Photoemission Tomography of One-Dimensional Row Structure of Flat-Lying Picene Multilayer on Ag(110),
M. Iwasawa, S. Kobayashi, M. Sasaki, Y. Hasegawa, H. Ishii, F. Matsui, S. Kera, Y. Yamada,
J. Phys. Chem. Lett. 13, 1512-1518 (2022).
DOI: 10.1021/acs.jpclett.1c03821

1. Thickness-dependent energy-level alignment at the organic-organic interface induced by templated gap states,
J. Hagenlocher, K. Broch, M. Zwadlo, D. Lepple, J. Rawle, F. Carla, S. Kera, F. Schreiber, A. Hinderhofer,
Adv. Mater. Inter. 9(3), 2101382-1-7 (2022).
DOI: 10.1002/admi.202101382


10. Valence Band Dispersion Embedded in Resonant Auger Electrons,
Fumihiko Matsui, Seiji Makita, Hiroyuki Matsuda, Eiken Nakamura, Yasuaki Okano, Takayuki Yano, Satoshi Kera, Shigemasa Suga,
J. Phys. Soc. Jpn. 90(12), 124710 (2021).
DOI: 10.7566/JPSJ.90.124710

9. Density of gap states in CH3NH3PbI3 single crystals probed with ultrahigh-sensitivity ultraviolet photoelectron spectroscopy,
J. Yang, M-F. Yang, G-B. Tang, S. Kera,
J. Phys: Cond. Mater. 33, 475001-1-5 (2021)
DOI: 10.1088/1361-648X/ac22da

8. On the Origin of Gap States in Molecular Semiconductors A Combined UPS, AFM, and X‑ray Diffraction Study,
J. Hagenlocher, N. Scheffczyk, K. Broch, G. Duva, N. Rußegger, L. Egenberger, R. Banerjee, S. Kera, F. Schreiber, and A. Hinderhofer,
J. Phys. Chem. C 125(32), 17929-17938 (2021)
DOI: 10.1021/acs.jpcc.1c03096

7. Interface Electronic Structure and Valence Band Dispersion of Bis(1,2,5-thiadiazolo)-p-quinobis(1,3-dithiole) on Polycrystalline Au Electrodes,
Y. Nakayama, K. Sudo, N. Ohashi, S. Kera, Y. Watanabe,
Electronic Structure 3, 024006-1-9 (2021)
DOI: 10.1088/2516-1075/ac0124

6. Contrast inversion of photoelectron spectro-microscopy image,
S. Makita, H. Matsuda, Y. Okano, T. Yano, E. Nakamura, Y. Hasegawa, S. Kera, S. Suga, and F. Matsui,
e-Journal of Surface Science and Nanotechnology 19, 42−47 (2021)
DOI: 10.1380/ejssnt.2021.42

5. Accessing the conduction band dispersion in CH3NH3PbI3 single crystals,
J. Yang, H. Sato, H. Orio, X. Liu, M. Fahlman, N. Ueno, H. Yoshida, T. Yamada, S. Kera,
J. Phys. Chem. Lett. 12, 3773-3778 (2021)
DOI: 10.1021/acs.jpclett.1c00530
Selected by Inside Cover

4. Many-Body photoemission theory for organic molecular crystals,
M. Nozaki, M. Haniuda, K. Niki, T. Fujikawa, S. Kera,
J. Electron Spectro. Relat. Phenom. 249, 1471071-1-9 (2021)
DOI: 10.1016/j.elspec.2021.147071

3. Temperature-dependent ground state charge transfer in van der Waals heterostructures,
S. Park, H. Wang, T. Schultz, D. Shin, R. Ovsyannikov, M. Zacharias, D. Maksimov, M. Meissner, Y. Hasegawa, T. Yamaguchi, S. Kera, A. Aljarb, A. Han, L-J. Li, V. C. Tung, P. Amsalem, M. Rossi, and N. Koch,
Adv. Mater. 33(20), 2008677 (2021)
DOI: 10.1002/adma.202008677
Selected by Backside Cover
DOI: 10.1002/adma.202170229

2. Experimental observation of anisotropic of valence band dispersion in the dinaphtho[2,3-b:2’,3’-f]thieno[3,2-b]thiophene (DNTT) single crystal,
R. Takeuchi, S. Izawa, Y. Hasegawa, R. Tsuruta, T. Yamaguchi, M. Meissner, S. Ideta, K. Tanaka, S. Kera, M. Hiramoto, Y. Nakayama,
J. Phys. Chem. C 125, 2938-2943 (2021)
DOI: 10.1021/acs.jpcc.0c09239
Selected by Supplementary Cover

1. High-Solubility Perovskite Quantum Dots for Solution-Processed Light-Emission Devices,
Y. Liu, S. Tang, J. Fan, E. Gracia-Espino, J. Yang, X. Liu, S. Kera, M. Fahlman, C. Larsen, T. Wågberg, L. Edman, J. Wang,
ACS Appl. Nano Mater. (2021)
DOI: 10.1021/acsanm.0c02797


7. Temperature-dependent band structure evolution determined by surface geometry in organic halide perovskite single crystals,
J. Yang, M. Meissner, T. Yamaguchi, B. Xi, K. Takahashi, S. Abdullah, X. Liu, H. Yoshida, M. Fahlman, and S. Kera,
Phys. Rev. B 102, 245101-1-6 (2020)
DOI: 10.1103/PhysRevB.102.245101

6. Room-Temperature Deposition of Cobalt Monolayer on (7×4) Crown-Ether Ring Molecular Array: Ultra-High Vacuum Scanning Tunneling Microscopy Study (in Japanease),
クラウンエーテル環状分子(7×4) 7×4) 配列への コバルト単原子層 の室温吸着:超高真空 STM ・UPS研究
R. Nemoto, P. Krüger, T. Hosokai, M. Horie, S. Kera, and T. Yamada,
Vacuum and Surface Science (表面と真空) 63(9), 1 (2020)
DOI: 10.1380/vss.63.465

5. The Role of Initial and Final States in Molecular Spectroscopies – the Example of Tetraphenyldibenzoperiflanthene (DBP) on Graphite,
T. Kirchhuebel, S. Kera, T. Munakata, N. Ueno, R. Shiraishi, T. Yamaguchi, K. Yonezawa, T. Ueba, F. Bussolotti, J. Yang, T. Yamada, R. Mori, S. Kunieda, T. Hümpfner, M. Gruenewald, R. Forker, T. Fritz,
J. Phys. Chem. C 124(36), 19622-19638 (2020)
DOI: 10.1021/acs.jpcc.0c05448

4. Photoelectron Momentum Microscope at BL6U of UVSOR-III Synchrotron,
F. Matsui, S. Makita, H. Matsuda, T. Yano, E. Nakamura, K. Tanaka, S. Suga, S. Kera,
Jpn. J. Appl. Phys. 59, 067001-1-9 (2020)
DOI: 10.35848/1347-4065/ab9184

3. Bulk and Surface Band Dispersion Mapping of the Au(111) Surface by Acceptance-cone Tunable PES System,
F. Matsui, S. Makita, H. Matsuda, T. Ueba, T. Horigome, H. Yamane, K. Tanaka, S. Kera, N. Kosugi,
e-J. of Surf. Sci. and Nanotech. 18, 18-23 (2020)
DOI: 10.1380/ejssnt.2020.18

2. Electrostatic interactions shape molecular organization and electronic structure of organic semiconductor blends,
G. D'Avino, S. Duhm, R. Della Valle, G. Heimel, M. Oehzelt, S. Kera, N. Ueno, D. Beljonne, and I. Salzmann,
Chem. Mater. 32(3), 1261-1271 (2020)
DOI: 10.1021/acs.chemmater.9b04763

1. Valence band dispersion measured in the surface normal direction of CH3NH3PbI3 single crystals,
J. Yang, S-X. Ren, T. Yamaguchi, M. Meissner, L. Cheng, L. Zhou, S. Ideta, K. Tanaka, and S. Kera,
Appl. Phys. Exp. 13, 011009-1-4 (2020)
DOI: 10.7567/1882-0786/ab6134


7. H. Yamane, F. Matsui, T. Ueba, T. Horigome, S. Makita, K. Tanaka, S. Kera, and N. Kosugi,
Acceptance-cone-tunable electron spectrometer for highly-efficient constant energy mapping,
Rev. of Sci. Inst. 90, 093102 (2019)
DOI: 10.1063/1.5109453

6. R. Nemoto, P. Krueger, A. Hartini, T. Hosokai, M. Horie, S. Kera, T. Yamada
Well-Ordered Monolayer Growth of Crown-Ether Ring Molecules on Cu(111) in Ultra-High Vacuum: A STM, UPS, and DFT Study,
J. Phys. Chem. C 123, 18939-18950 (2019)
DOI: 10.1021/acs.jpcc.9b03335

5. R. Schlesinger, F. Bussolotti, J. Yang, S. Sadofev, A. Vollmer, S. Blumstengel, S. Kera, N. Ueno, N. Koch,
Gap states induce soft Fermi level pinning upon charge transfer at ZnO/molecular acceptor interfaces,
Phys. Rev. Mater. 3 (7), 074601-1-8 (2019)
DOI: 10.1103/PhysRevMaterials.3.074601

4. S. Park, T. Schultz, A. Han, A. Aljarb, X. Xu, P. Beyer, A. Opitz, R. Ovsyannikov, L.-J. Li, M. Meissner, T. Yamaguchi, S. Kera, P. Amsalem, N. Koch
Electronic band dispersion determination in azimuthally disordered transition-metal dichalcogenide monolayers,
Communications Physics 2, 68 (2019)
DOI: 10.1038/s42005-019-0166-0

3. T. Kirchhuebel, O. L. A. Monti, T. Munakata, S. Kera, R. Forker, and T. Fritz
The Role of Initial and Final States in Molecular Spectroscopies,
Phys. Chem. Chem. Phys. 21, 12730-12747 (2019) [perspective]
DOI: 10.1039/C8CP07318J

2. Y. Nakayama, R. Tsuruta, N. Moriya, M. Hikasa, M. Meissner, T. Yamaguchi, Y. Mizuno, T. Suzuki, T. Koganezawa, T. Hosokai, T. Ueba, and S. Kera
Widely Dispersed Intermolecular Valence Bands of Epitaxially Grown Perfluoropentacene on Pentacene Single Crystals,
J. Phys. Chem. Lett. 10(6), 1312-1318 (2019)
DOI: 10.1021/acs.jpclett.8b03866
Selected by Front Cover

1. M. Schwarze, C. Gaul, R. Schol, F. Bussolotti, A. Hofacker, K. S. Schellhammer, B. Nell1, B. D. Naab, Z. Bao, D. Spoltore, K. Vandewal, J. Widmer, S. Kera, N. Ueno, F. Ortmann, K. Leo
Molecular Parameters Responsible for Thermally Activated Transport in Doped Organic Semiconductors,
Nature Materials 18(3), 242 (2019)
DOI: 10.1038/s41563-018-0277-0


6. Y. Nakayama, H. Masataka, N Moriya, M. Meissner, T. Yamaguchi, K. Yoshida, M. Murata, K. Mase, T. Ueba, S. Kera
Anisotropic valence band dispersion of single crystal pentacene as measured by angle-resolved ultraviolet photoelectron spectroscopy,
Journal of Materials Research 33(20)、3362-3370 (2018).
DOI: 10.1557/jmr.2018.315

5. J-P. Yang, M. Meissner, T. Yamaguchi, Xiu-Y. Zhang, T. Ueba, Li-wen Cheng, S. Ideta, K. Tanaka, Xiang-H. Zeng, N. Ueno and S. Kera
Band dispersion and hole effective mass of methylammonium lead iodide perovskite single crystals,
Solar RRL 2(10), 1800132 (2018)
DOI: 10.1002/solr.201800132

Selected by Back Cover
DOI: 10.1002/solr.201870216


4. Y. Kashimoto, K. Yonezawa, M. Meissner, M. Gruenewald, T. Ueba, S. Kera, R. Forker, T. Fritz, and H. Yoshida
The evolution of intermolecular energy bands of occupied and unoccupied molecular states in organic thin films,
J. Phys. Chem. C 122(22), 12090-12097 (2018)
Selected for the ACS Editors' Choice
DOI: 10.1021/acs.jpcc.8b02581

3. C. You, F. Xia, Y. Zhao, Y. Zhang, Y. Sheng, Y. Wu, X.-C. Hang, F. Chen, H. Ma, K. Shen, Z. Sun, T. Ueba, S. Kera, C. Zhang, H. Zhang, Z.-K. Chen, and W. Huang
Probing Triplet Excited States and Managing Blue Light Emission of Neutral Tetradentate Platinum (II) Complexes,
J. Phys. Chem. Lett. 9, 2285-2292 (2018)
DOI: 10.1021/acs.jpclett.8b00797

2. C. Guo, S. Sarkar, S. R.-Abramson, D. A. Egger, T. Bendikov, K. Yonezawa, Y. Suda, T. Yamaguchi, I. Pecht, S. Kera, N. Ueno, M. Sheves, L. Kronik, and D. Cahen
Electronic structure of dipeptides in the gas-phase and as an adsorbed monolayer,
Phys. Chem. Chem. Phys 20(10), 6860-6867 (2018)
DOI: 10.1039/c7cp08043c

1. C. Gaul, S. Hutsch, M. Schwarze, K. S. Schellhammer, F. Bussolotti, S. Kera, G. Cuniberti, K. Leo and F. Ortmann
Insight into doping efficiency of organic semiconductors from the analysis of the density of states in n-doped C60 and ZnPc,
Nature Materials 17, 439-444 (2018)
DOI: 10.1038/s41563-018-0030-8


6. F. Bussolotti, J. Yang, T. Yamaguchi, Y. Nakayama, M. Matsunami, H. Ishii, N. Ueno, and S. Kera,
Hole-phonon coupling effect on the electronic band dispersion of organic molecular semiconductor,
Nature Communications 8, 173-179 (2017)
DOI: 10.1038/s41467-017-00241-z
(IF 13.09/2016)

5. Antoni Franco-Canellas, Qi Wang, Katharina Broch, David A. Duncan, Pardeep Kumar Thakur, Lijia Liu, Satoshi Kera, Alexander Gerlach, Steffen Duhm, and Frank Schreiber,
Metal-organic interface functionalization via acceptor end groups: PTCDI on coinage metals,
Physical Review Materials (Rapid) 1, 013001-1-6 (2017)
DOI: 10.1103/PhysRevMaterials.1.013001

4. T. Hosokai, K. Yonezawa, J.P. Yang, K. R. Koswattage, S. Kera,
Significant reduction in the hole-injection barrier by the charge-transfer state formation: Diindenoperylene contacted with silver and copper electrodes,
Organic Electronics 49, 39-44 (2017)
DOI: 10.1016/j.orgel.2017.06.033
(IF 3.399/2016)

3. Jin-Peng Yang, Lin-Tai Shang, Fabio Bussolotti, Li-Wen Cheng, Wen-Qing Wang, Xiang-Hua Zeng, Satoshi Kera, Yan-Qing Li, Jian-Xin Tang, and Nobuo Ueno,
Fermi-level pinning appears upon weak electrode-organic contact without gap states: A universal phenomenon,
Organic Electronics 48, 172-178 (2017)
DOI: 10.1016/j.orgel.2017.06.005
(IF 3.399/2016)

2. Berthold Reisz, Simon Weimer, Rupak Banerjee, Clemens Zeiser, Christopher Lorch, Giuliano Duva, Johannes Dieterle, Keichiro Yonezawa, Jin-Peng Yang, Satoshi Kera, Nobuo Ueno, Alexander Hinderhofer, Alexander Gerlach, Frank Schreiber,
Structural, Optical, and Electronic Characterization of Perfluorinated Sexithiophene Films and Mixed Films with Sexithiophene,
J. Materials Research 32(10), 1908-1920 (2017)
DOI: 10.1557/jmr.2017.99
(IF 1.579/2015)

1. Qi Wang, Qian Xin, Rong-Bin Wang, Martin Oehzelt, Nobuo Ueno, Satoshi Kera, and Steffen Duhm,
Picene thin films on metal surfaces: Impact of molecular shape on interfacial coupling,
physica status solidi (RRL) (rapid research letters) 1700012-1-5 (2017)
DOI: 10.1002/pssr.201700012
(IF 2.58/2015)


9. A. Yang, A. Canellas, M. Sato, B. Wang, R.-B. Wang, H. Koike, I. Salzmann, P. K.Thakur, T.-L. Lee, L.-J. Liu, S.Kera, A. Gerlach, K. Kanai, J. Fan, F. Schreiber, and S.Duhm*,
Nitrogen Substitution Impacts Organic-Metal Interface Energetics,
Phys. Rev. B 94, 155426-1-9 (2016)
DOI: 10.1103/PhysRevB.94.155426
(IF 3.718/2015)

8. J.P. Yang, W.Q. Wang, F. Bussolotti, L.W. Cheng, Y.Q. Li, S. Kera, J.X. Tang, X.H. Zeng, and N. Ueno,
Quantitative Fermi level tuning in amorphous organic semiconductor by molecular doping: Toward full understanding of the doping mechanism,
Appl. Phys. Lett. 109, 093302-1-4 (2016)
DOI: 10.1063/1.4962052

7. C. Li, J. Wei, M. Sato, H. Koike, Z.-Z. Xie, Y.-Q. Li, K. Kanai, S. Kera, N.Ueno, J.X. Tang,
Quantitative Fermi level tuning in amorphous organic semiconductor by molecular doping: Toward full understanding of the doping mechanism,
ACS Applied Materials & Interfaces 8(18), 11526-11531 (2016).
DOI: 10.1021/acsami.6b02692

6. Y. He, F. Bussolotti, Q. Xin, J. Yang, S. Kera, N. Ueno, and S. Duhm,
Transient Monolayer Structure of Rubrene on Graphite: Impact on Hole-Phonon Coupling,
J. Phys. Chem. C 120(27), 14568-14574 (2016)
DOI: 10.1021/acs.jpcc.6b04848

5. T. Schultz, R. Schlesinger, J. Niederhausen, F. Henneberger, S. Sadofev, S. Blumstengel, A. Vollmer, F. Bussolotti, J.-P. Yang, S. Kera, K. Parvez, N. Ueno, K. M¨ullen, and N. Koch,
Tuning the work function of GaN with organic molecular acceptors,
Phys. Rev. B 32(8), 1981-1987 (2016)

4. K. Yonezawa, Y. Suda, S. Yanagisawa, T. Hosokai, K. Kato, T. Yamaguchi, H. Yoshida, N. Ueno, S. Kera,
Charge transfer states appear in the π-conjugated pure hydrocarbon molecule on Cu(111),
Appl. Phys. Exp. 9, 045201-1-4 (2016).

3. T. Kirchhuebel, M. Gruenewald, F. Sojka, S. Kera, F. Bussolotti, T. Ueba, N. Ueno, G. Rouille, R. Forker, T. Fritz,
Self-Assembly of Tetraphenyldibenzoperiflanthene (DBP) Films on Ag(111) in the Monolayer Regime,
Langmuir 32(8), 1981-1987 (2016)

2. J-P. Yang, W-Q. Wang, L-W. Cheng, Y-Q. Li, J-X. Tang, S. Kera, N. Ueno and X-H. Zeng,
Mechanism for doping induced p type C60 using thermally evaporated molybdenum trioxide (MoO3) as a dopant,
J. Phys.: Condens. Matter 28, 185502-1-6 (2016)

1. Y. Nakayama, Y. Uragami, M. Yamamoto, K. Yonezawa, K. Mase, S. Kera, H. Ishii, N. Ueno,
High-resolution core-level photoemission measurements on the pentacene single crystal surface assisted by photoconduction,
J. Phys: Cond. Mat. 28, 094001-1-8(2016).


5. T. Hosokai, A. Hinderhofer, F. Bussolotti, K. Yonezawa, C. Lorch, T. Watanabe, A. Vorobiev, Y. Hasegawa, Y. Yamada, Y. Kubozoro, A. Gerlach, S. Kera, F. Schreiber, and N.Ueno,
Thickness and Substrate Dependent Thin Films Growth of Picene and Impact to the Electronic Structure,
J. Phys. Chem. C 119, 29027-29037 (2015)

4. F. Bussolotti, J.P. Yang, M. Hiramoto, T. Kaji, S. Kera, N. Ueno,
Direct detection of density of gap states in C60 single crystal by photoemission spectroscopy,
Phys. Rev. B 92, 115012-1-7 (2015)

3. S. Kera and N. Ueno,
Photoelectron spectroscopy on the charge reorganization energy and small polaron binding energy of molecular film,
J. Electron Spectrosc. Relat. Phenom. 204 (part A), 2-11 (2015).
DOI:10.1016/j.elspec.2015.07.007 [open]

2. Satoshi Kera, Achim Schöll, Steffen Duhm, Xiaoyang Zhu
Special issue in honor of Prof. Nobuo Ueno: Progress in study of organic electronics by electron spectroscopies,
J. Electron Spectrosc. Relat. Phenom. 204 (part A), 1 (2015).

1. Jin-Peng Yang, Fabio Bussolotti, Yan-Qing Li, Xiang-Hua Zeng, Satoshi Kera, Jian-Xin Tang and Nobuo Ueno,
The role of gap states on energy level alignment at an α-NPD/HAT(CN)6 charge generation interface,
Org. Electronics 24, 120-124 (2015).


11. Jin-Peng Yang, Qi-Jun Sun, Keiichirou Yonezawa, Alexander Hinderhofer, Alexander Gerlach, Katharina Broch, Fabio Bussolotti, Xu Gao, Yanqing Li, Jianxin Tang, Frank Schreiber, Nobuo Ueno, Sui-Dong Wang, Satoshi Kera,
Interface optimization using diindenoperylene for C60 thin film transistors with high electron mobility and stability,
Org. Electronics 15, 2749-2755 (2014).

10. Y. Liu, D. Ikeda, S. Nagamatsu, T. Nishi, N. Ueno, S. Kera,
Impact of molecular orbital distribution on photoelectron intensity for picene film,
J. Electron Spect. Relat. Phenom. 195, 287-292 (2014).

9. Takuya Hosokai, Keiichirou Yonezawa, Kengo Kato, Rintaro Makino, Jinpeng Yang, Kaveenga Rasika Koswattage, Alexander Gerlach, Frank Schreiber, Nobuo Ueno, Satoshi Kera,
Structural Requirements for Surface-Induced Aromatic Stabilization,
MRS proceedings 1647 (2014).

8. J. P. Yang, K. Yonezawa, A. Hinderhofer, F. Bussolotti, S. Kera and N. Ueno,
A striking mobility improvement of C60 OFET by inserting diindenoperylene layer between C60 and SiO2 gate insulator,
SPIE proceedings 91651N-1 (2014).

7. K. Yonezawa, A. Hinderhofer, T. Hosokai, K. Kato, F. Schreiber, N. Ueno, and S. Kera,
Structural defects control the energy level alignment at organic/organic interfaces,
Adv. Mater. Interfaces 1 (4) 1400004-1-5 (2014)
DOI: 10.1002/admi.201400004

6. F. Bussolotti, J. Yang, A. Hinderhofer, Y. Huang, W. Chen, S. Kera, A.T.S. Wee, N. Ueno,
Origin of the energy level alignment at organic/organic interfaces: The role of structural defects,
Phys. Rev. B 89, 115319-1-7 (2014)
DOI: 10.1103/PhysRevB.89.115319

5. Jinpeng Yang, Yanqing Li, Steffen Duhm, Jianxin Tang, Satoshi Kera, Nobuo Ueno,
Molecular structure-dependent doping and chargetransport efficiencies of organic semiconductors: Impact of side chain substitution,
Adv. Mater. Interfaces 1 (3), 1300128-1-7 (2014)

4. T. Hosokai, K. Yonezawa, R. Makino, T. Kanayama, T. Koganezawa, K.K. Okudaira, S. Kera, N. Ueno,
Impact of films tructure on ionization energy of titanyl-phthalocyanine thin film,
MRS proceedings (JSAP-MRS Joint Symposia) 1605 (2014)

3. Yu Li Huang, Elisabeth Wruss, David A. Egger, Satoshi Kera, Nobuo Ueno, Wissam A. Saidi, Tomas Bucko, Andrew T. S. Wee, and Egbert Zojer,
Impact of films tructure on ionization energy of titanyl-phthalocyanine thin film,
Molecules 19, 2969-2992 (2014)

2. Jian-Qiang Zhong, Xinming Qin, JiaLin Zhang, Satoshi Kera, Nobuo Ueno, Andrew Thye Shen Wee, Jinlong Yang, Wei Chen,
Energy Level Realignment in Weakly Interacting Donor-Acceptor Binary Molecular Networks,
ACS Nano 8 (2) 1699–1707 (2014)

1. Jens Niederhausen, Steffen Duhm, Georg Heimel, Christoph Bürker, Qian Xin, Andreas Wilke, Antje Vollmer, Frank Schreiber, Satoshi Kera, Juergen P. Rabe, Nobuo Ueno, and Norbert Koch,
Seleno groups control the energy-level alignment between conjugated organic molecules and metals,
J. Chem. Phys. 140, 014705-1-11 (2014)


8. S. Kera, S. Hosoumi, K. Sato, H. Fukagawa, S. Nagamatsu, Y. Sakamoto, T. Suzuki, H. Huang, W. Chen, A. T. S. Wee, V. Coropceanu, and N. Ueno,
Experimental reorganization energies of pentacene and perfluoropentacene: Effects of perfluorination,
J. Phys. Chem. C , 117, 22428-22437 (2013).
DOI: 10.1021/jp4032089



7. W. N. Han, K. Yonezawa, R. Makino, K. Kato, A. Hiderhofer, R. Murdey, R. Shiroishi, H. Yoshida, N. Sato, N. Ueno, and S. Kera, Quantitatively identical orientation-dependent ionization energy and electron affinity of diindenoperylene,
Appl. Phys. Lett. 103, 253301-1-4 (2013).
DOI: 10.1063/1.4850531

6. S. Duhm, C. Buerker, J. Niederhausen, I. Salzmann, T. Hosokai, J. Duvernay, S. Kera, F. Schreiber, N. Koch, N. Ueno, A. Gerlach,
Pentacene on Ag(111): Correlation of bonding distance with intermolecular interaction and order,
ACS Appl. Mater Interfaces 5(19) 9377-9381 (2013)

5. F. Bussolotti, S. Kera, K. Kudo, A. Kahn and N. Ueno,
Gap states in pentacene thin film induced by inert gas exposure,
Phys .Rev. Lett. 110, 267602-1-5 (2013)

4. A.-L. Shi, Y.-Q. Li, Z.-Q. Xu, F.-Z. Sun, J. Li, X.-B. Shi, H.-X. Wei, S.-T. Lee, S. Kera, N. Ueno, J.-X. Tang,
Inverted polymer solar cells integrated with small molecular electron collection layer,
Org. Electronics 14, 1844-1851 (2013).

3. Y. L. Huang, W. Chen, F. Bussolotti, T. C. Niu, A. T. S. Wee, N. Ueno, S. Kera,
Impact of molecule-dipole orientation on the energy level alignment at sub-molecular scale,
Phys. Rev. B 87, 085205-1-6 (2013)

2. G. Heimel, S. Duhm, I. Salzmann, A. Gerlach, A. Strozecka, J. Niederhausen, C. Bürker, T. Hosokai, I. Fernandez-Torrente, G. Schulze, S. Winkler, A. Wilke, R. Schlesinger, J. Frisch, B. Bröker, A. Vollmer, B. Detlefs, J. Pflaum, S. Kera, K. J. Franke, N. Ueno, J. I. Pascual, F. Schreiber, and N. Koch,
Charged and Metallic Molecular Monolayers through Surface-Induced Aromatic Stabilisation,
Nature Chemistry 5, 187-194 (2013)

1. A. Hinderhofer, A. Gerlach, K. Broch, T. Hosokai, K. Yonezawa, K. Kato, S. Kera, N. Ueno, and F. Schreiber,
Geometric and Electronic Structure of Templated C60 on Diindenoperylene Thin Films,
J. Phys. Chem. C 117(2), 1053-1058 (2013)

for 1998-2012 [PDF]

Reviews in English(英文総説)

7. Y. Nakayama, S. Kera, N. Ueno
Photoelectron spectroscopy on single crystals of organic semiconductors: Experimental electronic band structure for optoelectronic properties,
J. Mater. Chem. C (2020) [Review]
DOI: /10.1039/D0TC00891E
Selected by Inside Back Cover


7. S. Kera, T. Hosokai, S. Duhm
Characteristics of Organic-Metal Interaction: A Perspective from Bonding Distance to Orbital Delocalization,
J. Phys. Soc. Jpn 87(6), 061008-1-7 (2018) [special issue]
DOI: 10.7566/JPSJ.87.061008

6. J. Yang, F. Bussolotti, S. Kera, and N. Ueno,
Origin and role of gap states in organic semiconductor: as the nature of organic molecular crystals,
J. Physics D: Applied Physics 50, 423002 (45pp) (2017) [Topical Review]
DOI: 10.1088/1361-6463/aa840f
(IF 2.588(2016)

5. S. Kera and N. Ueno,
Photoelectron spectroscopy on the charge reorganization energy and small polaron binding energy of molecular film,
J. Electron Spectrosc. Relat. Phenom. 204 (part A), 2-11 (2015).
DOI:10.1016/j.elspec.2015.07.007 [open]

4. S. Kera, H. Yamane, N. Ueno,
First principles measurements of charge mobility in organic semiconductors: Valence hole-vibration coupling in organic ultrathin films,
Prog. Scuf. Sci. 84, 135-154 (2009) (Progress Highlight).

3. N. Ueno, S. Kera,
Electron spectroscopy of functional organic thin films: Deep insights into valence electronic structure in relation to charge transport property,
Prog. Scuf. Sci. 83、490-557 (2008). (Review)

2. N. Ueno, S. Kera, K. Sakamoto, K.K. Okudaira,
Energy band and electron-phonon coupling in organic thin films: Photoelectron spectroscopy as a powerful tool for studying the charge transport,
Appl. Phys. A 92 (3) 495-504 (2008)

1. S. Kera and N. Ueno,
Deep Insight into a Valence Hole in Organic Semiconductors: High-Resolution Ultraviolet Photoemission Spectroscopy,
IPAP Conf. Ser. 6. 51-56 (2005).

Reviews in Japansese (邦文総説)


2. 解良聡、光電子運動量顕微鏡の発展と分子科学への展開
表面と真空, 64(6), 254-261 (2021) 特集「Momentum microscopeが拓く表面、分子科学」

S. Kera, Development of Photoelectron Momentum Microscope to Molecular Science,
Vacuum and Surface Science, 64(6), 254-261 (2021).
DOI: 10.1380/vss.64.254

1. 松井文彦, 牧田誠二, 岡野泰彬, 松田博之, 解良 聡, 光電子運動量顕微鏡:UVSOR での拠点構築と展開,
64(6), 262-268 (2021) 特集「Momentum microscopeが拓く表面、分子科学」

F. MATSUI, S. MAKITA, Y. OKANO, H. MATSUDA and S. KERA, Photoelectron Momentum Microscope : Development at UVSOR Synchrotron Facility,
Vacuum and Surface Science, 64(6), 262-268 (2021).
DOI: 10.1380/vss.64.262

Books (著書)

7. Y. Nakayama, S. Duhm, Q. Xin, S. Kera, H. Ishii and N. Ueno,
Ultraviolet Photoelectron Spectroscopy (UPS) I: Band Dispersion Measurements of “Insulating” Organic Single Crystals,
Chapter 2 in Electronic Processes in Organic Electronics: Bridging Nanostructure, Electronic States and Device Properties,
Eds.: H. Ishii, K. Kudo, T. Nakayama, N. Ueno,
Springer Series in Materials Science, vol.209 (2014).

6. S. Kera H. Yamane and N. Ueno,
Ultraviolet Photoelectron Spectroscopy (UPS) II: Electron–Phonon Coupling and Hopping Mobility,
Chapter 3 in Electronic Processes in Organic Electronics: Bridging Nanostructure, Electronic States and Device Properties,
Eds.: H. Ishii, K. Kudo, T. Nakayama, N. Ueno,
Springer Series in Materials Science, vol.209 (2014).

5. N. Ueno, T. Sueyoshi, F. Bussoloti and S. Kera,
Ultraviolet Photoelectron Spectroscopy (UPS) III: Direct Study of “Invisible” Band Gap States by Ultrahigh-Sensitivity UPS,
Chapter 4 in Electronic Processes in Organic Electronics: Bridging Nanostructure, Electronic States and Device Properties,
Eds.: H. Ishii, K. Kudo, T. Nakayama, N. Ueno,
Springer Series in Materials Science, vol.209 (2014).

4. F. Bussoloti, S. Kera, N. Ueno,
Pentacene becomes Mott-hubbard insulator by potassium doping,
Chapter 5 in Electronic Processes in Organic Electronics: Bridging Nanostructure, Electronic States and Device Properties,
Eds.: H. Ishii, K. Kudo, T. Nakayama, N. Ueno,
Springer Series in Materials Science, vol.209 (2014).

3. N. Ueno, S. Kera and K. Kanai,
Fundamental Electronic Structure of Organic Solids and Their Interfaces by Photoemission Spectroscopy and Related Methods,
Eds. N. Koch, N. Ueno, and A. T. S. Wee,
The Molecule-Metal Interface, Chap. 7, pp.175-217, Wiley, (2013).
ISBN 978-3-527-41060-6

2. N. Ueno, H. Yasufuku, S. Kera,K.K. Okudaira and Y. Harada,
Surface imaging using electrons excited by metastable-atom impacts. in Lecture Notes in Physics 588,
Nanoscale Spectroscopy and Its Applications to Semiconductor Research,
Eds. Y. Watanabe, S. Heun, G. Salviati, and N. Yamamoto,
Springer 2002, pp.131-144.

1. N. Ueno, K.K. Okudaira, Y. Azuma, S. Kera and S. Hasegawa,
Studies of organic thin films and interfaces by various electron spectroscopies: molecular orientation, electronic states and reactions,
Eds. Salaneck, Seki, Kahn, Pireaux,
Conjugated Polymer and Molecular Interfaces: Science and Technology for Photonic and Optoelectronic Applications,
Marcel Dekker Inc. (NY), 6 (2001) 153-204

Invited Talks (国際会議招待講演)


48. Energy and spatial distribution of frontier orbital state for organic thin films, 2nd International Conference on Materials research and Innovation (ICMARI), Bangkok, Thailand, DEC 17-18, 2019.

47. A perspective of frontier orbital state for weakly bound molecules on the surface, 25th Users' Meeting & Workshops at NSRRC; Workshop II: Scientific Opportunities of Soft X-ray/VUV Nano-spectroscopy & Nano-imaging at TPS, Hsinchu, Taiwan, SEP 19-20, 2019.

46. Photoelectron spectroscopy of semiconducting organic molecules, 18th European Conference on Applications of Surface and interface Analysis (ECASIA), Dresden, Germany, Sep 17, 2019. [Keynote]

45. Evolution of pi orbital state upon assembling the molecules on the surface, 14th International Symposium on Functional pi-electron Systems (FP14), Berlin, Germany, 2-7 June, 2019.

44. Imaging electron delocalization upon assembling the molecules, 1st international workshop on momentummicroscopy and spectroscopy, Okazaki, 22-23 FEB 2019.

43. Electronic band dispersion of perovskite single crystal: MAPbI3, International Workshop on Organic Semiconductors and Related Materials, Chiba, JAN 23, 2019.

42. Evolution of electron localization upon assembling the molecules on the surface, 9th Workshop on Advanced Spectroscopy of Organic Materials for Electronic Applications (ASOMEA9), Schluchsee, Germany, 24-26 OCT, 2018.

41. Charge delocalization upon molecular assembly, 9th International Workshop on Low Enerfgy Electron Diffraction and Related Techniques, Remagen ‘Germany), OCT 1-2, 2018.

40. Exploring function and property of organic materials by photoelectron spectroscopy, Recent Progress of Organic Electronics in Japan and Korea (JSAP annual meeting), Nagoya (Sep, 20, 2018)

39. Impacts of charge relaxation on the energy-level alignment: Tin(IV)phthalocyanine dichloride monolayer on graphite, The 9th International Conference on Thechnological Advances of Thin Films and Surface Coatings, Shenzhen, China (July 17-20, 2018)

38. Evolution of Electron Localization upon Molecular Assembling, International Symposium on Spectroscopy and Dynamics at Surface and Interface, Kyoto Univ, 24-25 May, 2018.

37. Tracking a transport charge in organic semiconductor material, The 9th International Conference of Electronic Structure and Processes at Molecula-Based Interfaces (ESPMI-9), 8-10 NOV, 2017, NUS, Singapore

36. Tracking charge transport of organic semiconductor material by electronic structure measurement, International Conference of Nano and Giga Challenges in Electronics, Photonics and Renewable Energy, 20 SEP, 2017, Tomsk, Russia

35. Spectroscopic evidence on quasiparticle state of organic semiconductor materials, 2017 Korea-Japan Molecular Science Symposium“Frontiers in Molecular Science: Structure, Dynamics, and Function of Molecules and Complexes" (co; 2017 Summer Symposium of KCS-Physical Chemistry Division), JUL 10-12, 2017, Busan, Korea

34. Tracking charge transport in rubrene single crystal, Workshop on Organic Semiconductors: Charge transport, Doping and Electronic states, 31 JAN, 2017, Chiba.

33. Mass, momentum and energy of an electron in rubrene single crystal, The 4th Workshop on Physics in Organic Optoelectronics, Soochow Univ, 10 Dec.(2016), China.

32. A perspective of quasiparticle state in organic crystals,
The 18th International (ICSFS), Chemnitz, Germany, 30 AUG (2016)

31. Deep insight into electronic states of functional molecular materials,
The International Conference on Electronic Materials (ICMRS-ICEM2016), Singapore, 4 JUL (2016) [keynote].

30. Energy distribution and density of gap states at organic-organic interfaces :Physics behind weak interaction,
The 2nd Workshop on Physics in Organic Optoelectronics (Joint JSPS-NSFC research program), Soochow Univ, China, 28th October.(2015)

29. Violation of sudden approximation at molecular monolayer interface,
SFB 1083-Workshop on Organic/Metal Interfaces at the Philipps-University of Marburg, Germany. 17 July,(2015)

28. Advanced photoelectron spectroscopies for functional molecular materials, The 7th Japan-Sweden Workshop on Advanced Spectroscopy of Organic Materials for Electronic Applications (ASOMEA-VII), Lund, Sweden, 8-13, June, (2014)

27. Advanced photoelectron spectroscopy of organic materials to bridge a gap between electronic states and charge transport property,
Lecture, Lund University, Sweden,14 June (2014).

26. Anisotropy of electron-phonon coupling for pentacene monolayer,
The 7th edition of the international workshop on Electronic Structure and Processes at Molecular-Based Interfaces (ESPMI-7), Islael, 27-3. MAY (2013).

25. Electronic Structure of Thin-Film and Single Crystalline Phases of Rubrene,
BIT’s 1st Annual World Congress of Nano-S&T, Dalian, China, 23 OCT, (2011).

24. Spin Configuration of Mn-Phthalocyanine Characterized by Molecular Orbital Symmetry,
International Conference on Materials for Advanced Technologies (ICMAT2011), Symposium Q (Interfacial Chemistry and Engineering and Their Applications for Molecular and Organic Electroncs, Singapore, 26 June to 1 July, (2011).

23. Electronic Properties of Organic Semiconductor Single Crystal,
Asian conference on organic electronics (A-COE) and Asian Symposium on Organic Materials for Electronics and Photonics (ASOMEP), 3-5 NOV (2010), Seoul, Korea

22. Photoelectron spectroscopy of molecular assembly: Bridging electronic structure and hole transport property,
The 6th Singapore International Chmical Conference (SICC6) Symposium: Organic & Graphene Electronics, Singapore, 15-18 DEC (2009).

21. Ultraviolet photoelectron spectroscopy of organic molecular assembly: Bridging electronic structure and hole transport property,
G-COE Workshop on Organic Electronics: Electronic states, charge transport and devices, Chiba, 5-6 NOV (2009).

20. Hole Mobility of Organic Solids: Direct Evaluation by Photoelectron Spectroscopy,
12th International Conference on the Formation of Semiconductor Interfaces (ICFSI12) , Weimer, Germany, 5-10 July (2009).

19. Bridge over a molecular property from vdW interaction to strong correlation,
Mini Symposium on the Electronic Structure of Organic Molecules and Solids, Chiba, 2. FEB (2009).

18. Ultraviolet photoelectron spectroscopy of molecular ultra-thin films: Electronic structure vs electric property,
Seminar at Forschungszentrum Juelich, Germany, 4. JUL (2009).

17. Electronic properties of molecular ultra-thin films: high-resolution UPS study,
Seminar at Surface Science Lab, National University of Singapore, 16. APR (2009).

16. Electronic structure of weakly interacting organic films: Localized and delocalized state,
Workshop on Electrical and Electronic Properties in Crystalline Thin Films of Small-Molecules, Chiba, 19. DEC (2008).

15. A fascinating molecule: Mn-Phthalocyanine,
1st G-COE Workshop on Resent research in organic and molecular electronics, Chiba, 11. NOV (2008).

14. Electronic structure of organic molecular aggregates: Wave function of localized state,
Seminar at Center of super-diamond and advanced films, City University of Hong Kong, 8. DEC. (2008).

13. On the way to first-principles measurements of charge mobility in organic semiconductor,
Seminar at Institute for Angewandte Physik, Tuebingen University, Germany, 30. JUL. (2008).

12. Electronic properties of molecular nanoscale aggregates by advanced ultraviolet photoelectron spectroscopy,
Lecture for Frontiers in Nanoscience and Technology, JAIST, Komatsu (2007).

11. High-resolution UPS as a Strategy for Finding an Active Organic Material,
The 4th Workshop on Advanced Spectroscopy of Organic Materials for Electronic Applications (ASOMEA4), Chiba, 8-12 OCT (2007).

10. Charge transport in organic semiconductor film: effects of fluorination on the charge reorganization energy of pentacene,
International Workshop on Super-functionality Organic Devices, Chiba (2007).

9. Electronic structure of organic semiconductor interfaces: valence band electrons,
Seminar at Experimental Physics II, Wuerzburg University, Germany (2006).

8. Molecular Vibration Induced Phenomena on Organic Semiconductor Interfaces Studied by High-resolution Photoelectron Spectroscopy,
COE Colloquium for Young Scientists, Chiba University (2005).

7. High-resolution UPS studies of organic-conductor interfaces: Deep insight into the HOMO hole in π-conjugated molecules on conductive substrates,
International Symposium on Super-Functionality Organic Devices Chiba, 24-28 OCT (2004).

6. Quantitative analysis of photoelectron angular distribution by SR-ARUPS: NTCDA on GeS,
Seminar at Experimental Physics II, Wuerzburg University, Germany (2004).

5. Effects of the dipole layer on the energy level alignment at organic/conductor interfaces,
International Workshop on Organic Interfaces Related to Organic Electronic Devices, Sendai (2003).

4. High resolution valence photoemission study of organic monolayer: an estimation of electron transfer rate,
Seminar at Institut fur Angewandte Photophysik, Technische Universitat Dresden, Germany (2002).

3. What appears in the valence-photoemission spectra in the well-ordered organic monolayer by high-resolution measurement?
Seminar at Experimental Physics II, Wuerzburg University, Wuerzburg, Germany (2002).

2. Electronic states of organic/inorganic interfaces: Fermi level location and band width,
Seminar at Surface Physics and Chemistry, Dept. of Physics and Measurement Technology, Institute of Technology, Linkoping University, Sweden (2001).

1. Electronic state and molecular orientaion of organic thin films studied by outermost-surface spectroscopy using metastable atom beam,
Seminar at Laboratoire LISE, Faculty Universitaires Notre-Dame de la Paix, Namur, Belgium (2000).