World's Best Scientists 2026 revealed!
Sadao Adachi

Sadao Adachi

D-Index & Metrics

Materials Science

D-Index
70
Citations
25519
World Ranking
4345
National Ranking
201

Sadao 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 Sadao 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: 485 publications — 85th percentile

85% of scientists in this discipline score the same or lower.

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

Sadao 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 Sadao 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: 70 D-Index — 66th percentile

66% of scientists in this discipline score the same or lower.

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

Overview

Sadao Adachi is affiliated with Gunma University in Japan and focuses research efforts primarily within materials science and chemistry. The scientist's work concentrates on luminescence properties and solid-state spectroscopy, contributing to 53 publications in materials science and 19 in chemistry.

The research scope encompasses several specialized subfields, including materials chemistry, inorganic chemistry, electrical and electronic engineering, ceramics and composites, and radiation. This diverse expertise supports investigations into advanced materials with luminescent properties and their underlying spectroscopic characteristics.

Key topics addressed in the published work are:

  • Luminescence Properties of Advanced Materials
  • Solid-state spectroscopy and crystallography
  • Inorganic Fluorides and Related Compounds
  • Glass properties and applications
  • Perovskite Materials and Applications
  • Gas Sensing Nanomaterials and Sensors
  • Radiation Detection and Scintillator Technologies

The publication record shows a strong presence in the ECS Journal of Solid State Science and Technology with 20 articles, followed by 9 publications in the Journal of Luminescence. Contributions also appear in Optical Materials and Optical Materials X.

Frequent collaboration includes coauthors such as Akihiro Tatsumi and Masashi Okubo.

Selected recent papers illustrate the research themes:

  • Review-Photoluminescence Properties of Cr3+-Activated Oxide Phosphors (2021), ECS Journal of Solid State Science and Technology
  • Mn4+ and Cr3+ ions in red and deep red-emitting phosphors: Spectral analysis and Racah parameter determination (2020), Journal of Luminescence
  • Luminescence spectroscopy of Cr3+ in an oxide: A strong or weak crystal-field phosphor? (2021), Journal of Luminescence
  • Spectroscopy of Cr3+ activator: Tanabe−Sugano diagram and Racah parameter analysis (2020), Journal of Luminescence
  • Review-Temperature Dependence of Luminescence Intensity and Decay Time in Mn4+-Activated Fluoride and Oxyfluoride Phosphors (2021), ECS Journal of Solid State Science and Technology

Best Publications

  • GaAs, AlAs, and AlxGa1−xAs: Material parameters for use in research and device applications

    Sadao Adachi

  • Material parameters of In1−xGaxAsyP1−y and related binaries

    Sadao Adachi

  • Optical dispersion relations for GaP, GaAs, GaSb, InP, InAs, InSb, AlxGa1−xAs, and In1−xGaxAsyP1−y

    Sadao Adachi

  • Optical constants of ZnO

    Hisashi Yoshikawa;Sadao Adachi

  • Band gaps and refractive indices of AlGaAsSb, GaInAsSb, and InPAsSb: Key properties for a variety of the 2–4‐μm optoelectronic device applications

    Sadao Adachi

  • Optical properties of hexagonal GaN

    Takahiro Kawashima;Hisashi Yoshikawa;Sadao Adachi;Shunro Fuke

  • Mn4 + -Activated Red Photoluminescence in K2SiF6 Phosphor

    Toru Takahashi;Sadao Adachi

  • Photoluminescence properties of Mn4+-activated oxide phosphors for use in white-LED applications: A review

    Sadao Adachi

  • Optical Properties of Crystalline and Amorphous Semiconductors

    Unknown

  • Model dielectric constants of GaP, GaAs, GaSb, InP, InAs, and InSb.

    Unknown

  • Chemical Etching Characteristics of ( 001 ) InP

    Sadao Adachi;Hitoshi Kawaguchi

  • Refractive indices of III–V compounds: Key properties of InGaAsP relevant to device design

    Sadao Adachi

  • Photoluminescence spectra and modeling analyses of Mn 4+ -activated fluoride phosphors: A review

    Sadao Adachi

  • Properties of Na2SiF6:Mn4+ and Na2GeF6:Mn4+ red phosphors synthesized by wet chemical etching

    Yan Kai Xu;Sadao Adachi

  • Optical properties of cubic and hexagonal CdSe

    Susumu Ninomiya;Sadao Adachi

  • Direct synthesis and properties of K2SiF6:Mn4+ phosphor by wet chemical etching of Si wafer

    Sadao Adachi;Toru Takahashi

  • Optical properties of wurtzite CdS

    Susumu Ninomiya;Sadao Adachi

  • Lattice thermal resistivity of III–V compound alloys

    Sadao Adachi

  • Optical properties of ZnTe

    Kohzo Sato;Sadao Adachi

  • Model dielectric constants of Si and Ge

    Sadao Adachi

  • Optical properties of CdTe: Experiment and modeling

    Sadao Adachi;Toshifumi Kimura;Norihiro Suzuki

  • Review—Mn4+-Activated Red and Deep Red-Emitting Phosphors

    Sadao Adachi

  • Photoluminescent properties of K2GeF6:Mn4+ red phosphor synthesized from aqueous HF/KMnO4 solution

    Sadao Adachi;Toru Takahashi

  • Optical properties of Mn4+-activated Na2SnF6 and Cs2SnF6 red phosphors

    Yusuke Arai;Sadao Adachi

  • Red and Deep Red Emissions from Cubic K2SiF6:Mn4+ and Hexagonal K2MnF6 Synthesized in HF/KMnO4/KHF2/Si Solutions

    Ryota Kasa;Sadao Adachi

Frequent Co-Authors

Minoru Fujii
Minoru Fujii Kobe University
Tadao Ishibashi
Tadao Ishibashi NTT (Japan)
Wai Kin Chan
Wai Kin Chan University of Hong Kong
D. Mangalaraj
D. Mangalaraj Bharathiar University
Hoi Sing Kwok
Hoi Sing Kwok Hong Kong University of Science and Technology
Naoto Koshizaki
Naoto Koshizaki Hokkaido University
Aleksandra B. Djurišić
Aleksandra B. Djurišić University of Hong Kong
Malcolm K. Jones
Malcolm K. Jones University of Queensland
Keiji Sasaki
Keiji Sasaki Hokkaido University

If you think any of the details on this page are incorrect, let us know.

Report an issue

We appreciate your kind effort to assist us to improve this page, it would be helpful providing us with as much detail as possible in the text box below:

Best Scientists Citing Sadao Adachi

Trending Scientists

Recently Published Articles