World's Best Scientists 2026 revealed!
Hisao Ishii

Hisao Ishii

D-Index & Metrics

Chemistry

D-Index
56
Citations
13317
World Ranking
11500
National Ranking
850

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.

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 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.

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.

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 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.

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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