World's Best Scientists 2026 revealed!
Chihaya Adachi

Chihaya Adachi

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Materials Science
Japan
2026

D-Index & Metrics

Materials Science

D-Index
147
Citations
104355
World Ranking
174
National Ranking
7

Chihaya Adachi publication distribution in Materials Science in 2026

The chart shows the distribution of publications by all Research.com ranked scientists in the field of Materials Science in 2026. The highlighted bar marks where Chihaya Adachi sits on this spectrum.

50–69 publications: 28 scientists 70–89 publications: 152 scientists 90–109 publications: 356 scientists 110–129 publications: 487 scientists 130–149 publications: 723 scientists 150–169 publications: 835 scientists 170–189 publications: 850 scientists 190–209 publications: 891 scientists 210–229 publications: 862 scientists 230–249 publications: 766 scientists 250–269 publications: 726 scientists 270–289 publications: 665 scientists 290–309 publications: 593 scientists 310–329 publications: 537 scientists 330–349 publications: 477 scientists 350–369 publications: 440 scientists 370–389 publications: 356 scientists 390–409 publications: 321 scientists 410–429 publications: 256 scientists 430–449 publications: 246 scientists 450–469 publications: 216 scientists 470–489 publications: 212 scientists 490–509 publications: 174 scientists 510–529 publications: 194 scientists 530–549 publications: 162 scientists 550–569 publications: 131 scientists 570–589 publications: 111 scientists 590–609 publications: 103 scientists 610–629 publications: 99 scientists 630–649 publications: 77 scientists 650–669 publications: 92 scientists 670–689 publications: 56 scientists 690–709 publications: 53 scientists 710–729 publications: 53 scientists 730–749 publications: 38 scientists 750–769 publications: 52 scientists 770–789 publications: 43 scientists 790–809 publications: 38 scientists 810–829 publications: 34 scientists 830–849 publications: 25 scientists 850–869 publications: 18 scientists 870–889 publications: 20 scientists 890–909 publications: 24 scientists 910–929 publications: 27 scientists 930–949 publications: 20 scientists 950–969 publications: 17 scientists 970–989 publications: 10 scientists 990–1,009 publications: 16 scientists 1,010–1,029 publications: 13 scientists 1,030–1,049 publications: 12 scientists 1,050–1,069 publications: 9 scientists 1,070–1,089 publications: 8 scientists 1,090–1,109 publications: 7 scientists 1,110–1,129 publications: 9 scientists 1,130–1,149 publications: 2 scientists 1,150–1,162 publications: 5 scientists 1,163+ publications: 100 scientists
50 publications 1,163+

This scientist: 1,227 publications — 99th percentile

99% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 1,163 publications or more.

Chihaya Adachi D-index placement in Materials Science in 2026

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

40–41 D-Index: 211 scientists 42–43 D-Index: 450 scientists 44–45 D-Index: 612 scientists 46–47 D-Index: 612 scientists 48–49 D-Index: 598 scientists 50–51 D-Index: 657 scientists 52–53 D-Index: 667 scientists 54–55 D-Index: 621 scientists 56–57 D-Index: 597 scientists 58–59 D-Index: 610 scientists 60–61 D-Index: 587 scientists 62–63 D-Index: 606 scientists 64–65 D-Index: 533 scientists 66–67 D-Index: 490 scientists 68–69 D-Index: 469 scientists 70–71 D-Index: 378 scientists 72–73 D-Index: 421 scientists 74–75 D-Index: 359 scientists 76–77 D-Index: 323 scientists 78–79 D-Index: 299 scientists 80–81 D-Index: 230 scientists 82–83 D-Index: 210 scientists 84–85 D-Index: 195 scientists 86–87 D-Index: 203 scientists 88–89 D-Index: 175 scientists 90–91 D-Index: 175 scientists 92–93 D-Index: 142 scientists 94–95 D-Index: 121 scientists 96–97 D-Index: 117 scientists 98–99 D-Index: 107 scientists 100–101 D-Index: 88 scientists 102–103 D-Index: 85 scientists 104–105 D-Index: 68 scientists 106–107 D-Index: 62 scientists 108–109 D-Index: 57 scientists 110–111 D-Index: 45 scientists 112–113 D-Index: 49 scientists 114–115 D-Index: 50 scientists 116–117 D-Index: 34 scientists 118–119 D-Index: 38 scientists 120–121 D-Index: 37 scientists 122–123 D-Index: 29 scientists 124–125 D-Index: 28 scientists 126–127 D-Index: 24 scientists 128–129 D-Index: 33 scientists 130–131 D-Index: 28 scientists 132–133 D-Index: 21 scientists 134–135 D-Index: 20 scientists 136–137 D-Index: 23 scientists 138–139 D-Index: 17 scientists 140–141 D-Index: 12 scientists 142–143 D-Index: 17 scientists 144–145 D-Index: 21 scientists 146–147 D-Index: 13 scientists 148–149 D-Index: 11 scientists 150–151 D-Index: 14 scientists 152–153 D-Index: 13 scientists 154–155 D-Index: 9 scientists 156–157 D-Index: 10 scientists 158–159 D-Index: 7 scientists 160–161 D-Index: 4 scientists 162–163 D-Index: 4 scientists 164 D-Index: 3 scientists 165+ D-Index: 98 scientists
40 D-Index 165+

This scientist: 147 D-Index — 99th percentile

99% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 165 D-Index or more.

Research.com Recognitions

  • 2026 - Research.com Materials Science in Japan Leader Award
  • 2025 - Research.com Materials Science in Japan Leader Award
  • 2023 - Research.com Materials Science in Japan Leader Award
  • 2022 - Research.com Materials Science in Japan Leader Award
  • 2017 - Nishina Memorial Prize
  • 2014 - Society for Information Display Fellow

Overview

Chihaya Adachi is affiliated with Kyushu University in Japan and has contributed extensively to the fields of engineering and materials science. Their research primarily spans electrical and electronic engineering as well as materials chemistry, covering topics such as polymers and plastics, physical and theoretical chemistry, and organic chemistry.

The main topics in their work include:

  • Organic Light-Emitting Diodes Research
  • Luminescence and Fluorescent Materials
  • Organic Electronics and Photovoltaics
  • Crystallization and Solubility Studies
  • X-ray Diffraction in Crystallography
  • Perovskite Materials and Applications
  • Conducting polymers and applications

Adachi has published frequently in several academic venues, including:

  • The Cambridge Structural Database
  • Advanced Optical Materials
  • Angewandte Chemie
  • Nature Communications
  • Angewandte Chemie International Edition

Notable recent papers authored or coauthored include:

  • "Stable pure-blue hyperfluorescence organic light-emitting diodes with high-efficiency and narrow emission," 2021, Nature Photonics
  • "Stable room-temperature continuous-wave lasing in quasi-2D perovskite films," 2020, Nature
  • "Fast spin-flip enables efficient and stable organic electroluminescence from charge-transfer states," 2020, Nature Photonics
  • "Nanosecond-time-scale delayed fluorescence molecule for deep-blue OLEDs with small efficiency rolloff," 2020, Nature Communications
  • "Detrimental Effect of Unreacted PbI2 on the Long-Term Stability of Perovskite Solar Cells," 2020, Advanced Materials

The frequent coauthors collaborating with Adachi include:

  • Masashi Mamada
  • Hajime Nakanotani
  • Youichi Tsuchiya
  • Chin-Yiu Chan
  • Toshinori Matsushima

Among the recognitions received, Adachi has been awarded the Nishina Memorial Prize in 2017 and was named a Society for Information Display Fellow in 2014.

Best Publications

  • Highly efficient organic light-emitting diodes from delayed fluorescence

    Hiroki Uoyama;Kenichi Goushi;Kenichi Goushi;Katsuyuki Shizu;Hiroko Nomura

  • Nearly 100% internal phosphorescence efficiency in an organic light emitting device

    Chihaya Adachi;Marc A. Baldo;Mark E. Thompson;Mark E. Thompson;Stephen R. Forrest

  • Highly phosphorescent bis-cyclometalated iridium complexes: synthesis, photophysical characterization, and use in organic light emitting diodes.

    Sergey Lamansky;Peter Djurovich;Drew Murphy;Feras Abdel-Razzaq

  • Efficient blue organic light-emitting diodes employing thermally activated delayed fluorescence

    Qisheng Zhang;Bo Li;Shuping Huang;Hiroko Nomura

  • Organic light-emitting diodes employing efficient reverse intersystem crossing for triplet-to-singlet state conversion

    Kenichi Goushi;Kou Yoshida;Keigo Sato;Chihaya Adachi

  • Transient analysis of organic electrophosphorescence. II. Transient analysis of triplet-triplet annihilation

    M. A. Baldo;C. Adachi;S. R. Forrest

  • Design of Efficient Thermally Activated Delayed Fluorescence Materials for Pure Blue Organic Light Emitting Diodes

    Qisheng Zhang;Jie Li;Katsuyuki Shizu;Shuping Huang

  • High-efficiency red electrophosphorescence devices

    Chihaya Adachi;Marc A. Baldo;Stephen R. Forrest;Sergey Lamansky

  • High-efficiency organic electrophosphorescent devices with tris(2-phenylpyridine)iridium doped into electron-transporting materials

    Chihaya Adachi;Marc A. Baldo;Stephen R. Forrest;Mark E. Thompson

  • Highly efficient blue electroluminescence based on thermally activated delayed fluorescence.

    Shuzo Hirata;Yumi Sakai;Kensuke Masui;Hiroyuki Tanaka

  • Efficient up-conversion of triplet excitons into a singlet state and its application for organic light emitting diodes

    Ayataka Endo;Keigo Sato;Kazuaki Yoshimura;Takahiro Kai

  • Endothermic energy transfer: A mechanism for generating very efficient high-energy phosphorescent emission in organic materials

    Chihaya Adachi;Raymond C. Kwong;Raymond C. Kwong;Peter Djurovich;Peter Djurovich;Vadim Adamovich;Vadim Adamovich

  • Organic electroluminescent device having a hole conductor as an emitting layer

    Chihaya Adachi;Tetsuo Tsutsui;Shogo Saito

  • High-efficiency organic light-emitting diodes with fluorescent emitters

    Hajime Nakanotani;Takahiro Higuchi;Taro Furukawa;Kensuke Masui

  • Organic long persistent luminescence

    Ryota Kabe;Chihaya Adachi;Chihaya Adachi

  • Blue light‐emitting organic electroluminescent devices

    Chihaya Adachi;Tetsuo Tsutsui;Shogo Saito

  • Thermally Activated Delayed Fluorescence from Sn4+–Porphyrin Complexes and Their Application to Organic Light Emitting Diodes — A Novel Mechanism for Electroluminescence

    Ayataka Endo;Mai Ogasawara;Atsushi Takahashi;Daisuke Yokoyama

  • 100% phosphorescence quantum efficiency of Ir(III) complexes in organic semiconductor films

    Yuichiro Kawamura;Kenichi Goushi;Jason Brooks;Julie J. Brown

  • Purely organic electroluminescent material realizing 100% conversion from electricity to light

    Hironori Kaji;Hajime Suzuki;Tatsuya Fukushima;Katsuyuki Shizu;Katsuyuki Shizu

  • Anthraquinone-Based Intramolecular Charge-Transfer Compounds: Computational Molecular Design, Thermally Activated Delayed Fluorescence, and Highly Efficient Red Electroluminescence

    Qisheng Zhang;Hirokazu Kuwabara;William J. Potscavage;Shuping Huang

Frequent Co-Authors

Toshinori Matsushima
Toshinori Matsushima Kyushu University
Hajime Nakanotani
Hajime Nakanotani Kyushu University
Takuma Yasuda
Takuma Yasuda Kyushu University
Chuanjiang Qin
Chuanjiang Qin Chinese Academy of Sciences
Hiroyuki Sasabe
Hiroyuki Sasabe Chitose Institute of Science and Technology
Franky So
Franky So North Carolina State University
Tetsuo Tsutsui
Tetsuo Tsutsui Kyushu University
Hiroyuki Tanaka
Hiroyuki Tanaka Kyushu University
Stephen R. Forrest
Stephen R. Forrest University of Michigan–Ann Arbor
Jang-Joo Kim
Jang-Joo Kim Seoul National University

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