World's Best Scientists 2026 revealed!
Yoshitaka Okada

Yoshitaka Okada

D-Index & Metrics

Engineering and Technology

D-Index
41
Citations
7701
World Ranking
6898
National Ranking
141

Yoshitaka Okada publication distribution in Engineering and Technology in 2026

The chart shows the distribution of publications by all Research.com ranked scientists in the field of Engineering and Technology in 2026. The highlighted bar marks where Yoshitaka Okada sits on this spectrum.

38–47 publications: 20 scientists 48–57 publications: 35 scientists 58–67 publications: 96 scientists 68–77 publications: 135 scientists 78–87 publications: 190 scientists 88–97 publications: 259 scientists 98–107 publications: 283 scientists 108–117 publications: 369 scientists 118–127 publications: 341 scientists 128–137 publications: 386 scientists 138–147 publications: 372 scientists 148–157 publications: 457 scientists 158–167 publications: 415 scientists 168–177 publications: 407 scientists 178–187 publications: 421 scientists 188–197 publications: 378 scientists 198–207 publications: 403 scientists 208–217 publications: 317 scientists 218–227 publications: 346 scientists 228–237 publications: 321 scientists 238–247 publications: 260 scientists 248–257 publications: 280 scientists 258–267 publications: 240 scientists 268–277 publications: 214 scientists 278–287 publications: 242 scientists 288–297 publications: 203 scientists 298–307 publications: 166 scientists 308–317 publications: 154 scientists 318–327 publications: 175 scientists 328–337 publications: 159 scientists 338–347 publications: 99 scientists 348–357 publications: 131 scientists 358–367 publications: 106 scientists 368–377 publications: 118 scientists 378–387 publications: 97 scientists 388–397 publications: 108 scientists 398–407 publications: 82 scientists 408–417 publications: 71 scientists 418–427 publications: 64 scientists 428–437 publications: 55 scientists 438–447 publications: 54 scientists 448–457 publications: 60 scientists 458–467 publications: 47 scientists 468–477 publications: 40 scientists 478–487 publications: 30 scientists 488–497 publications: 29 scientists 498–507 publications: 38 scientists 508–517 publications: 40 scientists 518–527 publications: 32 scientists 528–537 publications: 23 scientists 538–547 publications: 28 scientists 548–557 publications: 23 scientists 558–567 publications: 19 scientists 568–577 publications: 16 scientists 578–587 publications: 17 scientists 588–597 publications: 18 scientists 598–607 publications: 22 scientists 608–617 publications: 15 scientists 618–627 publications: 9 scientists 628–637 publications: 11 scientists 638–647 publications: 21 scientists 648–657 publications: 12 scientists 658–667 publications: 9 scientists 668–677 publications: 11 scientists 678–687 publications: 9 scientists 688–697 publications: 6 scientists 698–707 publications: 14 scientists 708–717 publications: 7 scientists 718–727 publications: 8 scientists 728–737 publications: 10 scientists 738–747 publications: 9 scientists 748–757 publications: 5 scientists 758–767 publications: 5 scientists 768–777 publications: 11 scientists 778–787 publications: 7 scientists 788–797 publications: 2 scientists 798–803 publications: 4 scientists 804+ publications: 100 scientists
38 publications 804+

This scientist: 496 publications — 94th percentile

94% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 804 publications or more.

Yoshitaka Okada D-index placement in Engineering and Technology in 2026

The chart shows the D-index (discipline H-index) distribution of Engineering and Technology scientists ranked by Research.com in 2026. The highlighted bar marks where Yoshitaka Okada sits on this spectrum.

30 D-Index: 59 scientists 31 D-Index: 114 scientists 32 D-Index: 129 scientists 33 D-Index: 189 scientists 34 D-Index: 200 scientists 35 D-Index: 262 scientists 36 D-Index: 311 scientists 37 D-Index: 312 scientists 38 D-Index: 350 scientists 39 D-Index: 385 scientists 40 D-Index: 348 scientists 41 D-Index: 362 scientists 42 D-Index: 426 scientists 43 D-Index: 380 scientists 44 D-Index: 310 scientists 45 D-Index: 341 scientists 46 D-Index: 301 scientists 47 D-Index: 306 scientists 48 D-Index: 271 scientists 49 D-Index: 246 scientists 50 D-Index: 210 scientists 51 D-Index: 253 scientists 52 D-Index: 213 scientists 53 D-Index: 221 scientists 54 D-Index: 195 scientists 55 D-Index: 186 scientists 56 D-Index: 170 scientists 57 D-Index: 167 scientists 58 D-Index: 166 scientists 59 D-Index: 144 scientists 60 D-Index: 152 scientists 61 D-Index: 141 scientists 62 D-Index: 138 scientists 63 D-Index: 131 scientists 64 D-Index: 118 scientists 65 D-Index: 114 scientists 66 D-Index: 119 scientists 67 D-Index: 95 scientists 68 D-Index: 87 scientists 69 D-Index: 77 scientists 70 D-Index: 89 scientists 71 D-Index: 69 scientists 72 D-Index: 54 scientists 73 D-Index: 46 scientists 74 D-Index: 55 scientists 75 D-Index: 54 scientists 76 D-Index: 49 scientists 77 D-Index: 53 scientists 78 D-Index: 46 scientists 79 D-Index: 28 scientists 80 D-Index: 39 scientists 81 D-Index: 36 scientists 82 D-Index: 24 scientists 83 D-Index: 26 scientists 84 D-Index: 36 scientists 85 D-Index: 18 scientists 86 D-Index: 25 scientists 87 D-Index: 19 scientists 88 D-Index: 26 scientists 89 D-Index: 27 scientists 90 D-Index: 23 scientists 91 D-Index: 15 scientists 92 D-Index: 12 scientists 93 D-Index: 9 scientists 94 D-Index: 15 scientists 95 D-Index: 10 scientists 96 D-Index: 13 scientists 97 D-Index: 13 scientists 98 D-Index: 9 scientists 99 D-Index: 7 scientists 100 D-Index: 7 scientists 101 D-Index: 8 scientists 102 D-Index: 7 scientists 103 D-Index: 7 scientists 104 D-Index: 9 scientists 105 D-Index: 6 scientists 106 D-Index: 9 scientists 107+ D-Index: 99 scientists
30 D-Index 107+

This scientist: 41 D-Index — 31st percentile

31% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 107 D-Index or more.

Overview

Yoshitaka Okada is affiliated with the University of Tokyo in Japan. Their research work spans multiple fields of study including Engineering, Materials Science, and Physics and Astronomy, with a significant focus on Electrical and Electronic Engineering, Materials Chemistry, and Atomic and Molecular Physics, and Optics. The scientist's work also extends to Biomedical Engineering and Renewable Energy, Sustainability, and the Environment as subfields.

Okada's research topics prominently include Quantum Dots Synthesis and Properties, Semiconductor Quantum Structures and Devices, and Chalcogenide Semiconductor Thin Films. Additional topics they cover involve solar cell performance optimization, Nanowire Synthesis and Applications, Copper-based nanomaterials and applications, and Perovskite Materials and Applications.

Frequent publication venues for Okada include the Journal of Applied Physics, Journal of Photonics for Energy, SSRN Electronic Journal, Japanese Journal of Applied Physics, and Progress in Photovoltaics Research and Applications.

Co-authorship collaborations feature several recurring colleagues, among them Naoya Miyashita, Nazmul Ahsan, T. Logu, Yusuke Oteki, and S. Kalainathan.

Representative recent papers published by Okada are:

  • "Binary and ternary metal oxide semiconductor thin films for effective gas sensing applications: A comprehensive review and future prospects" (2023), in Progress in Materials Science
  • "A review on advancements, challenges, and prospective of copper and non-copper based thin-film solar cells using facile spray pyrolysis technique" (2022), in Solar Energy
  • "Enhanced Hot-Phonon Bottleneck Effect on Slowing Hot Carrier Cooling in Metal Halide Perovskite Quantum Dots with Alloyed A-Site" (2023), in Advanced Materials
  • "Theoretical and experimental assessment of thinned germanium substrates for III-V multijunction solar cells" (2020), in Progress in Photovoltaics Research and Applications
  • "Engineering of sub-band in CuGaS2 thin films via Mo doping by chemical spray pyrolysis route" (2020), in Thin Solid Films

Best Publications

  • Intermediate band solar cells: Recent progress and future directions

    Y. Okada;N. J. Ekins-Daukes;T. Kita;R. Tamaki

  • Strain-compensated InAs/GaNAs quantum dots for use in high-efficiency solar cells

    Ryuji Oshima;Ayami Takata;Yoshitaka Okada

  • Increase in photocurrent by optical transitions via intermediate quantum states in direct-doped InAs/GaNAs strain-compensated quantum dot solar cell

    Yoshitaka Okada;Takayuki Morioka;Katsuhisa Yoshida;Ryuji Oshima

  • Optical spectra in (La,Y)TiO3: Variation of Mott-Hubbard gap features with change of electron correlation and band filling.

    Y. Okimoto;T. Katsufuji;Y. Okada;T. Arima

  • Material challenges for solar cells in the twenty-first century: directions in emerging technologies

    Samy Almosni;Amaury Delamarre;Zacharie Jehl;Daniel Suchet

  • Novel materials for high-efficiency III-V multi-junction solar cells

    Masafumi Yamaguchi;Ken-Ichi Nishimura;Takuo Sasaki;Hidetoshi Suzuki

  • Characteristics of InAs/GaNAs strain-compensated quantum dot solar cell

    Yoshitaka Okada;Ryuji Oshima;Ayami Takata

  • Fabrication of ultra-high density InAs-stacked quantum dots by strain-controlled growth on InP(3 1 1)B substrate

    Kouichi Akahane;Naoki Ohtani;Yoshitaka Okada;Mitsuo Kawabe

  • Does a magnetic barrier or a magnetic-electric barrier structure possess any spin polarization and spin filtering under zero bias?

    H. Z. Xu;Y. Okada

  • Two-photon excitation in an intermediate band solar cell structure

    Nazmul Ahsan;Naoya Miyashita;Muhammad Monirul Islam;Kin Man Yu

  • Intermediate-band dynamics of quantum dots solar cell in concentrator photovoltaic modules

    Tomah Sogabe;Yasushi Shoji;Mitsuyoshi Ohba;Katsuhisa Yoshida

  • Furnace grown gate oxynitride using nitric oxide (NO)

    Y. Okada;P.J. Tobin;K.G. Reid;R.I. Hegde

  • Roadmap on optical energy conversion

    Svetlana V. Boriskina;Martin A. Green;Kylie Catchpole;Eli Yablonovitch;Eli Yablonovitch

  • Breath-hold T2-weighted MRI of hepatic tumors: value of echo planar imaging with diffusion-sensitizing gradient.

    Yoshitaka Okada;Kuni Ohtomo;Shigeru Kiryu;Yasuhito Sasaki

  • Solution-processed intermediate-band solar cells with lead sulfide quantum dots and lead halide perovskites.

    Hiroji Hosokawa;Ryo Tamaki;Takuya Sawada;Akinori Okonogi

  • Highly packed InGaAs quantum dots on GaAs(311)B

    Kouichi Akahane;Takahiro Kawamura;Kenji Okino;Hiromichi Koyama

  • Probing subpicosecond dynamics using pulsed laser combined scanning tunneling microscopy

    Osamu Takeuchi;Masahiro Aoyama;Ryuji Oshima;Yoshitaka Okada

  • Segmental intensity differences in the liver on MR images: a sign of intrahepatic portal flow stoppage.

    Y Itai;K Ohtomo;T Kokubo;Y Okada

  • Absorption threshold extended to 1.15eV using InGaAs/GaAsP quantum wells for over-50%-efficient lattice-matched quad-junction solar cells

    Kasidit Toprasertpong;Hiromasa Fujii;Tomos Thomas;Markus Führer

  • Intermediate band solar cell with extreme broadband spectrum quantum efficiency.

    A. Datas;E. López;I. Ramiro;E. Antolín

  • Self-organized InGaAs/GaAs quantum dot arrays for use in high-efficiency intermediate-band solar cells

    Yasushi Shoji;Yasushi Shoji;Katsuhiro Akimoto;Yoshitaka Okada

Frequent Co-Authors

Jean-François Guillemoles
Jean-François Guillemoles Centre national de la recherche scientifique, CNRS
Yoshiaki Nakano
Yoshiaki Nakano University of Tokyo
Stéphane Collin
Stéphane Collin Centre national de la recherche scientifique, CNRS
Kuni Ohtomo
Kuni Ohtomo University of Tokyo
Kenjiro Miyano
Kenjiro Miyano National Institute for Materials Science
James S. Harris
James S. Harris Stanford University
Seiji Samukawa
Seiji Samukawa Tohoku University
Antonio Luque
Antonio Luque Technical University of Madrid
Antonio Martí
Antonio Martí Technical University of Madrid
Ichiro Yamashita
Ichiro Yamashita Osaka University

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