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Hisao Ishii

Hisao Ishii

D-Index & Metrics

Discipline name D-Index World Ranking Current World Ranking National Ranking Current National Ranking Publications Citations
Chemistry 56 11500 10359 850 778 293 13317

Hisao Ishii publications per year

The chart shows the history of publications by Hisao Ishii between 1988 and 2025, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. Hisao Ishii published across 38 years, from 1988 to 2025, averaging 9.6 papers a year. Output peaked at 21 publications in 1999. 24 of the 365 publications appeared in the last two years.

No. of publications
5 10 15 20
Bar chart. Horizontal axis: year, 1988 to 2025. Vertical axis: number of publications, 0 to 21. Peak 21 publications in 1999. 1988: 1 publication 1989: 0 publications 1990: 1 publication 1991: 0 publications 1992: 0 publications 1993: 2 publications 1994: 3 publications 1995: 11 publications 1996: 15 publications 1997: 13 publications 1998: 8 publications 1999: 21 publications 2000: 9 publications 2001: 16 publications 2002: 12 publications 2003: 14 publications 2004: 10 publications 2005: 14 publications 2006: 9 publications 2007: 4 publications 2008: 7 publications 2009: 2 publications 2010: 6 publications 2011: 6 publications 2012: 13 publications 2013: 8 publications 2014: 13 publications 2015: 14 publications 2016: 17 publications 2017: 18 publications 2018: 10 publications 2019: 19 publications 2020: 13 publications 2021: 20 publications 2022: 7 publications 2023: 5 publications 2024: 11 publications 2025: 13 publications
1988 2025

365 publications in total across all disciplines

View publications per year as a table
Hisao Ishii: publications per year, 1988 to 2025
Year Publications
1988 1
1989 0
1990 1
1991 0
1992 0
1993 2
1994 3
1995 11
1996 15
1997 13
1998 8
1999 21
2000 9
2001 16
2002 12
2003 14
2004 10
2005 14
2006 9
2007 4
2008 7
2009 2
2010 6
2011 6
2012 13
2013 8
2014 13
2015 14
2016 17
2017 18
2018 10
2019 19
2020 13
2021 20
2022 7
2023 5
2024 11
2025 13
Total 365
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Hisao Ishii publication distribution in Chemistry in 2026

The chart shows the distribution of publications by all Research.com ranked scientists in the field of Chemistry in 2026. The highlighted bar marks where Hisao Ishii sits on this spectrum.

No. of scientists
250 500 750 1,000 1,250
Bar chart with 63 bars. Horizontal axis: publications, 61–80 to 1,295+. Vertical axis: number of scientists, 0 to 1,350. Most scientists, 1,350, have 161–180 publications. The last bar groups every scientist with 1,295 publications or more. The highlighted bar, 281–300 publications, is where this scientist sits. 61–80 publications: 66 scientists 81–100 publications: 302 scientists 101–120 publications: 623 scientists 121–140 publications: 918 scientists 141–160 publications: 1,218 scientists 161–180 publications: 1,350 scientists 181–200 publications: 1,344 scientists 201–220 publications: 1,281 scientists 221–240 publications: 1,216 scientists 241–260 publications: 1,100 scientists 261–280 publications: 979 scientists 281–300 publications: 939 scientists 301–320 publications: 764 scientists 321–340 publications: 643 scientists 341–360 publications: 628 scientists 361–380 publications: 522 scientists 381–400 publications: 459 scientists 401–420 publications: 397 scientists 421–440 publications: 327 scientists 441–460 publications: 270 scientists 461–480 publications: 265 scientists 481–500 publications: 252 scientists 501–520 publications: 201 scientists 521–540 publications: 185 scientists 541–560 publications: 148 scientists 561–580 publications: 148 scientists 581–600 publications: 132 scientists 601–620 publications: 114 scientists 621–640 publications: 104 scientists 641–660 publications: 91 scientists 661–680 publications: 92 scientists 681–700 publications: 73 scientists 701–720 publications: 57 scientists 721–740 publications: 54 scientists 741–760 publications: 67 scientists 761–780 publications: 45 scientists 781–800 publications: 46 scientists 801–820 publications: 39 scientists 821–840 publications: 32 scientists 841–860 publications: 36 scientists 861–880 publications: 29 scientists 881–900 publications: 26 scientists 901–920 publications: 24 scientists 921–940 publications: 14 scientists 941–960 publications: 23 scientists 961–980 publications: 28 scientists 981–1,000 publications: 15 scientists 1,001–1,020 publications: 29 scientists 1,021–1,040 publications: 12 scientists 1,041–1,060 publications: 19 scientists 1,061–1,080 publications: 12 scientists 1,081–1,100 publications: 6 scientists 1,101–1,120 publications: 8 scientists 1,121–1,140 publications: 12 scientists 1,141–1,160 publications: 5 scientists 1,161–1,180 publications: 6 scientists 1,181–1,200 publications: 14 scientists 1,201–1,220 publications: 7 scientists 1,221–1,240 publications: 2 scientists 1,241–1,260 publications: 6 scientists 1,261–1,280 publications: 4 scientists 1,281–1,294 publications: 6 scientists 1,295+ publications: 100 scientists
61–80 publications 1,295+

This scientist: 293 publications — 61st percentile

61% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 1,295 publications or more.

View publications distribution as a table
Number of Chemistry scientists by publication count, Research.com 2026 ranking edition. Based on 17,934 ranked scientists.
Publications Scientists This scientist
61–80 66
81–100 302
101–120 623
121–140 918
141–160 1,218
161–180 1,350
181–200 1,344
201–220 1,281
221–240 1,216
241–260 1,100
261–280 979
281–300 939 293
301–320 764
321–340 643
341–360 628
361–380 522
381–400 459
401–420 397
421–440 327
441–460 270
461–480 265
481–500 252
501–520 201
521–540 185
541–560 148
561–580 148
581–600 132
601–620 114
621–640 104
641–660 91
661–680 92
681–700 73
701–720 57
721–740 54
741–760 67
761–780 45
781–800 46
801–820 39
821–840 32
841–860 36
861–880 29
881–900 26
901–920 24
921–940 14
941–960 23
961–980 28
981–1,000 15
1,001–1,020 29
1,021–1,040 12
1,041–1,060 19
1,061–1,080 12
1,081–1,100 6
1,101–1,120 8
1,121–1,140 12
1,141–1,160 5
1,161–1,180 6
1,181–1,200 14
1,201–1,220 7
1,221–1,240 2
1,241–1,260 6
1,261–1,280 4
1,281–1,294 6
1,295+ 100
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Hisao Ishii D-index placement in Chemistry in 2026

The chart shows the D-index (discipline H-index) distribution of Chemistry scientists ranked by Research.com in 2026. The highlighted bar marks where Hisao Ishii sits on this spectrum.

No. of scientists
250 500 750 1,000
Bar chart with 61 bars. Horizontal axis: D-Index, 40–41 to 159+. Vertical axis: number of scientists, 0 to 1,051. Most scientists, 1,051, have 56–57 D-Index. The last bar groups every scientist with 159 D-Index or more. The highlighted bar, 56–57 D-Index, is where this scientist sits. 40–41 D-Index: 289 scientists 42–43 D-Index: 612 scientists 44–45 D-Index: 808 scientists 46–47 D-Index: 776 scientists 48–49 D-Index: 835 scientists 50–51 D-Index: 861 scientists 52–53 D-Index: 872 scientists 54–55 D-Index: 933 scientists 56–57 D-Index: 1,051 scientists 58–59 D-Index: 930 scientists 60–61 D-Index: 882 scientists 62–63 D-Index: 834 scientists 64–65 D-Index: 731 scientists 66–67 D-Index: 775 scientists 68–69 D-Index: 683 scientists 70–71 D-Index: 646 scientists 72–73 D-Index: 561 scientists 74–75 D-Index: 501 scientists 76–77 D-Index: 437 scientists 78–79 D-Index: 388 scientists 80–81 D-Index: 354 scientists 82–83 D-Index: 292 scientists 84–85 D-Index: 275 scientists 86–87 D-Index: 254 scientists 88–89 D-Index: 235 scientists 90–91 D-Index: 185 scientists 92–93 D-Index: 192 scientists 94–95 D-Index: 155 scientists 96–97 D-Index: 163 scientists 98–99 D-Index: 125 scientists 100–101 D-Index: 105 scientists 102–103 D-Index: 105 scientists 104–105 D-Index: 112 scientists 106–107 D-Index: 88 scientists 108–109 D-Index: 68 scientists 110–111 D-Index: 69 scientists 112–113 D-Index: 65 scientists 114–115 D-Index: 79 scientists 116–117 D-Index: 61 scientists 118–119 D-Index: 44 scientists 120–121 D-Index: 37 scientists 122–123 D-Index: 40 scientists 124–125 D-Index: 33 scientists 126–127 D-Index: 26 scientists 128–129 D-Index: 34 scientists 130–131 D-Index: 35 scientists 132–133 D-Index: 25 scientists 134–135 D-Index: 27 scientists 136–137 D-Index: 17 scientists 138–139 D-Index: 16 scientists 140–141 D-Index: 20 scientists 142–143 D-Index: 20 scientists 144–145 D-Index: 15 scientists 146–147 D-Index: 9 scientists 148–149 D-Index: 9 scientists 150–151 D-Index: 16 scientists 152–153 D-Index: 11 scientists 154–155 D-Index: 9 scientists 156–157 D-Index: 3 scientists 158 D-Index: 3 scientists 159+ D-Index: 98 scientists
40–41 D-Index 159+

This scientist: 56 D-Index — 36th percentile

36% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 159 D-Index or more.

View D-Index distribution as a table
Number of Chemistry scientists by D-index, Research.com 2026 ranking edition. Based on 17,934 ranked scientists.
D-Index Scientists This scientist
40–41 289
42–43 612
44–45 808
46–47 776
48–49 835
50–51 861
52–53 872
54–55 933
56–57 1,051 56
58–59 930
60–61 882
62–63 834
64–65 731
66–67 775
68–69 683
70–71 646
72–73 561
74–75 501
76–77 437
78–79 388
80–81 354
82–83 292
84–85 275
86–87 254
88–89 235
90–91 185
92–93 192
94–95 155
96–97 163
98–99 125
100–101 105
102–103 105
104–105 112
106–107 88
108–109 68
110–111 69
112–113 65
114–115 79
116–117 61
118–119 44
120–121 37
122–123 40
124–125 33
126–127 26
128–129 34
130–131 35
132–133 25
134–135 27
136–137 17
138–139 16
140–141 20
142–143 20
144–145 15
146–147 9
148–149 9
150–151 16
152–153 11
154–155 9
156–157 3
158 3
159+ 98
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Overview

Hisao Ishii is affiliated with Chiba University in Japan and has an extensive research output primarily in the fields of Engineering and Materials Science. Their work is situated within several subfields, including Electrical and Electronic Engineering, Materials Chemistry, Polymers and Plastics, Biomedical Engineering, and Mechanical Engineering.

The main topics addressed in Ishii's research include:

  • Organic Electronics and Photovoltaics
  • Molecular Junctions and Nanostructures
  • Organic Light-Emitting Diodes Research
  • Conducting Polymers and Applications
  • Innovative Energy Harvesting Technologies
  • Electrochemical Analysis and Applications
  • Advanced Sensor and Energy Harvesting Materials

Frequent collaborators in Ishii's research include Yuya Tanaka, M. J. O'Hara, Ryotaro Nakazawa, Kohei Shimizu, and Manato Tateno.

Key publication venues where Ishii's work appears often include:

  • Applied Physics Express
  • physica status solidi (RRL) - Rapid Research Letters
  • Advanced Optical Materials
  • Applied Physics Letters
  • Sensors and Materials

Notable recent papers authored or co-authored by Ishii are:

  • "Coherent Electron Transport across a 3 nm Bioelectronic Junction Made of Multi-Heme Proteins," 2020, The Journal of Physical Chemistry Letters
  • "Self-Assembled Electret for Vibration-Based Power Generator," 2020, Scientific Reports
  • "Understanding spontaneous orientation polarization of amorphous organic semiconducting films and its application to devices," 2022, Synthetic Metals
  • "Influence of intermolecular interactions on the formation of spontaneous orientation polarization in organic semiconducting films," 2020, Journal of the Society for Information Display
  • "Role of Spontaneous Orientational Polarization in Organic Donor-Acceptor Blends for Exciton Binding," 2020, Advanced Optical Materials

Best Publications

  • ENERGY LEVEL ALIGNMENT AND INTERFACIAL ELECTRONIC STRUCTURES AT ORGANIC/METAL AND ORGANIC/ORGANIC INTERFACES

    Hisao Ishii;Kiyoshi Sugiyama;Eisuke Ito;Kazuhiko Seki

  • Dependence of indium–tin–oxide work function on surface cleaning method as studied by ultraviolet and x-ray photoemission spectroscopies

    Kiyoshi Sugiyama;Hisao Ishii;Yukio Ouchi;Kazuhiko Seki

  • Kelvin Probe Study of Band Bending at Organic Semiconductor/Metal Interfaces: Examination of Fermi Level Alignment

    H. Ishii;N. Hayashi;E. Ito;Y. Washizu

  • Energy level alignment at organic/metal interfaces studied by UV photoemission: breakdown of traditional assumption of a common vacuum level at the interface

    H. Ishii;K. Seki

  • Spontaneous buildup of giant surface potential by vacuum deposition of Alq3 and its removal by visible light irradiation

    Eisuke Ito;Yuuki Washizu;Naoki Hayashi;Hisao Ishii

  • Highest-Occupied-Molecular-Orbital Band Dispersion of Rubrene Single Crystals as Observed by Angle-Resolved Ultraviolet Photoelectron Spectroscopy

    Shin Ichi MacHida;Yasuo Nakayama;Steffen Duhm;Qian Xin

  • Theoretical study of n-alkane adsorption on metal surfaces

    Yoshitada Morikawa;Yoshitada Morikawa;Hisao Ishii;Kazuhiko Seki

  • Charge accumulation at organic semiconductor interfaces due to a permanent dipole moment and its orientational order in bilayer devices

    Yutaka Noguchi;Yukimasa Miyazaki;Yuya Tanaka;Naoki Sato

  • Examination of band bending at buckminsterfullerene (C60)/metal interfaces by the Kelvin probe method

    N. Hayashi;H. Ishii;Y. Ouchi;K. Seki

  • Electronic structures of organic molecular materials for organic electroluminescent devices studied by ultraviolet photoemission spectroscopy

    Kiyoshi Sugiyama;Daisuke Yoshimura;Takayuki Miyamae;Takafumi Miyazaki

  • The electronic structure and energy level alignment of porphyrin/metal interfaces studied by ultraviolet photoelectron spectroscopy

    S. Narioka;H. Ishii;D. Yoshimura;M. Sei

  • Energy-level alignment at model interfaces of organic electroluminescent devices studied by UV photoemission: trend in the deviation from the traditional way of estimating the interfacial electronic structures

    H. Ishii;K. Sugiyama;D. Yoshimura;E. Ito

  • Orientational ordering of alkyl chain at the air/liquid interface of ionic liquids studied by sum frequency vibrational spectroscopy

    Toshifumi Iimori;Takashi Iwahashi;Hisao Ishii;Kazuhiko Seki

  • Core hole effect in NEXAFS spectroscopy of polycyclic aromatic hydrocarbons: Benzene, chrysene, perylene, and coronene

    Hiroshi Oji;Ryuichi Mitsumoto;Eisuke Ito;Hisao Ishii

  • Electronic structure of organic/metal interfaces

    Kazuhiko Seki;Naoki Hayashi;Hiroshi Oji;Eisuke Ito

  • Origins of Improved Hole‐Injection Efficiency by the Deposition of MoO3 on the Polymeric Semiconductor Poly(dioctylfluorene‐alt‐benzothiadiazole)

    Yasuo Nakayama;Katsuyuki Morii;Yuuichirou Suzuki;Hiroyuki Machida

  • In-plane X-ray diffraction and polarized NEXAFS spectroscopic studies on the organized molecular films of fluorinated amphiphiles with vinyl esters and their comb-polymers

    Atsuhiro Fujimori;Tohru Araki;Hiroo Nakahara;Eisuke Ito

  • Identification of different origins for s-shaped current voltage characteristics in planar heterojunction organic solar cells

    Julia Wagner;Mark Gruber;Andreas Wilke;Yuya Tanaka

  • Photoinduced doping effect of pentacene field effect transistor in oxygen atmosphere studied by displacement current measurement

    Satoshi Ogawa;Tatsuo Naijo;Yasuo Kimura;Hisao Ishii

  • Threshold voltage shift and formation of charge traps induced by light irradiation during the fabrication of organic light-emitting diodes

    Yutaka Noguchi;Naoki Sato;Yuya Tanaka;Yasuo Nakayama

  • Direct observation of the electronic states of single crystalline rubrene under ambient condition by photoelectron yield spectroscopy

    Yasuo Nakayama;Shinichi Machida;Takeo Minari;Kazuhito Tsukagishi

Frequent Co-Authors

Yukio Ouchi
Yukio Ouchi Tokyo Institute of Technology
Kazuhiko Seki
Kazuhiko Seki National Institute of Advanced Industrial Science and Technology
Nobuo Ueno
Nobuo Ueno Chiba University
Norbert Koch
Norbert Koch Humboldt-Universität zu Berlin
Wolfgang Brütting
Wolfgang Brütting University of Augsburg
Toshiaki Ohta
Toshiaki Ohta Ritsumeikan University
Günther Leising
Günther Leising Graz University of Technology
Masahiko Hara
Masahiko Hara Tokyo Institute of Technology
Dietrich R. T. Zahn
Dietrich R. T. Zahn Chemnitz University of Technology
Chihaya Adachi
Chihaya Adachi Kyushu University

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