Yoichi Kawakami

10.1k total citations · 2 hit papers
348 papers, 7.9k citations indexed

About

Yoichi Kawakami is a scholar working on Condensed Matter Physics, Atomic and Molecular Physics, and Optics and Materials Chemistry. According to data from OpenAlex, Yoichi Kawakami has authored 348 papers receiving a total of 7.9k indexed citations (citations by other indexed papers that have themselves been cited), including 212 papers in Condensed Matter Physics, 193 papers in Atomic and Molecular Physics, and Optics and 131 papers in Materials Chemistry. Recurrent topics in Yoichi Kawakami's work include GaN-based semiconductor devices and materials (212 papers), Semiconductor Quantum Structures and Devices (180 papers) and Ga2O3 and related materials (76 papers). Yoichi Kawakami is often cited by papers focused on GaN-based semiconductor devices and materials (212 papers), Semiconductor Quantum Structures and Devices (180 papers) and Ga2O3 and related materials (76 papers). Yoichi Kawakami collaborates with scholars based in Japan, United States and Germany. Yoichi Kawakami's co-authors include Mitsuru Funato, Yukio Narukawa, Shigeo Fujita, Shizυo Fujita, Takashi Mukai, Shuji Nakamura, Ryan G. Banal, Akio Kaneta, Koichi Okamoto and Kazunobu Kojima and has published in prestigious journals such as Physical review. B, Condensed matter, Applied Physics Letters and Journal of Applied Physics.

In The Last Decade

Yoichi Kawakami

335 papers receiving 7.7k citations

Hit Papers

Role of self-formed InGaN quantum dots for exciton locali... 1997 2026 2006 2016 1997 1997 250 500 750
What are hit papers?

Hit papers significantly outperform the citation benchmark for their cohort. A paper qualifies if it has ≥500 total citations, achieves ≥1.5× the top-1% citation threshold for papers in the same subfield and year (this is the minimum needed to enter the top 1%, not the average within it), or reaches the top citation threshold in at least one of its specific research topics.

  1. Role of self-formed InGaN quantum dots for exciton localization in the purple laser diode emitting at 420 nm
    1997 772 citations Yoichi Kawakami, Mitsuru Funato et al. Applied Physics Letters profile →
  2. Recombination dynamics of localized excitons inIn0.20Ga0.80N-In0.05Ga0.95N multiple quantum wells
    1997 415 citations Yoichi Kawakami, Shigeo Fujita et al. profile →

Peers — A (Enhanced Table)

Peers by citation overlap · career bar shows stage (early→late) cites · hero ref

Name h Career Trend Papers Cites
Yoichi Kawakami Japan 43 5.8k 3.9k 3.4k 2.7k 2.4k 348 7.9k
D. Hommel Germany 44 4.1k 0.7× 5.2k 1.3× 4.8k 1.4× 2.1k 0.8× 4.5k 1.8× 558 9.6k
T. Suski Poland 43 8.1k 1.4× 3.7k 0.9× 4.2k 1.2× 3.6k 1.3× 3.9k 1.6× 455 10.1k
T. D. Moustakas United States 50 6.4k 1.1× 2.7k 0.7× 4.3k 1.2× 3.2k 1.2× 3.5k 1.5× 224 9.0k
F. Scholz Germany 45 5.0k 0.9× 4.5k 1.1× 3.1k 0.9× 2.1k 0.8× 3.9k 1.6× 471 8.4k
O. Brandt Germany 53 7.9k 1.4× 4.2k 1.1× 5.8k 1.7× 4.4k 1.7× 3.6k 1.5× 380 11.4k
B. Ḿonemar Sweden 47 5.5k 0.9× 5.0k 1.3× 5.0k 1.4× 3.3k 1.2× 5.1k 2.1× 544 10.6k
B. Daudin France 46 5.7k 1.0× 2.8k 0.7× 3.4k 1.0× 2.7k 1.0× 2.1k 0.9× 321 7.4k
J. Li United States 48 4.8k 0.8× 1.7k 0.4× 4.6k 1.3× 3.0k 1.1× 2.8k 1.2× 235 8.4k
I. Grzegory Poland 51 9.7k 1.7× 3.4k 0.9× 5.2k 1.5× 4.4k 1.6× 4.0k 1.7× 430 11.3k
S. Strite United States 23 4.6k 0.8× 2.5k 0.6× 2.5k 0.7× 2.1k 0.8× 3.4k 1.4× 48 6.9k

Countries citing papers authored by Yoichi Kawakami

Since Specialization
Citations

This map shows the geographic impact of Yoichi Kawakami's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by Yoichi Kawakami with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Yoichi Kawakami more than expected).

Fields of papers citing papers by Yoichi Kawakami

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Yoichi Kawakami. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by Yoichi Kawakami. The network helps show where Yoichi Kawakami may publish in the future.

Co-authorship network of co-authors of Yoichi Kawakami

This figure shows the co-authorship network connecting the top 25 collaborators of Yoichi Kawakami. A scholar is included among the top collaborators of Yoichi Kawakami based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with Yoichi Kawakami. Yoichi Kawakami is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

20 of 20 papers shown
1.
Ishii, Ryota, Kanako Shojiki, Mitsuru Funato, et al.. (2024). Correlative Micro‐Photoluminescence Study on Hybrid Quantum‐Well InGaN Red Light‐Emitting Diodes. physica status solidi (b). 261(11). 2 indexed citations
2.
Matsuda, Yoshinobu, et al.. (2024). Spontaneously Integrated Multicolor InGaN Micro‐Light‐Emitting Diodes for Spectrum‐Controllable Broadband Light Sources. physica status solidi (RRL) - Rapid Research Letters. 18(11). 1 indexed citations
3.
4.
Matsuda, Yoshinobu, et al.. (2023). Anisotropic emission wavelength distribution of semipolar InGaN quantum wells on symmetric convex lens-shaped GaN microstructures. Applied Physics Letters. 123(24). 2 indexed citations
5.
Funato, Mitsuru, Yoshinobu Matsuda, & Yoichi Kawakami. (2023). A review of three-dimensional structure-controlled InGaN quantum wells for efficient visible polychromatic light emitters. Semiconductor Science and Technology. 39(1). 13002–13002. 2 indexed citations
6.
Funato, Mitsuru, et al.. (2022). Optical anisotropy of (112¯3) semipolar InGaN quantum wells homoepitaxially grown on GaN substrates. Journal of Applied Physics. 131(7). 3 indexed citations
7.
Ishii, Ryota, Norman Susilo, Tim Wernicke, et al.. (2022). Picosecond-laser-excited photoluminescence study of AlGaN quantum wells on epitaxially laterally overgrown AlN/sapphire under selective and non-selective excitation conditions. Japanese Journal of Applied Physics. 61(11). 112002–112002. 8 indexed citations
8.
Matsuda, Yoshinobu, et al.. (2022). Multiwavelength-emitting InGaN quantum wells on convex-lens-shaped GaN microstructures. Applied Physics Express. 15(10). 105503–105503. 11 indexed citations
9.
Ishii, Ryota, et al.. (2021). Impact of the positive electron–hole exchange interaction constant on the binding energy of neutral donor bound excitons in AlN. Japanese Journal of Applied Physics. 60(8). 80901–80901. 5 indexed citations
10.
Funato, Mitsuru & Yoichi Kawakami. (2021). Singularity structures for sub-250 nm emissions from AlGaN-based semiconductors. Japanese Journal of Applied Physics. 60(12). 120501–120501. 7 indexed citations
11.
Ishii, Ryota, et al.. (2021). Bias-dependent time-resolved photoluminescence spectroscopy on 265 nm AlGaN-based LEDs on AlN substrates. Japanese Journal of Applied Physics. 60(2). 20903–20903. 1 indexed citations
12.
Ichikawa, Shuhei, Mitsuru Funato, & Yoichi Kawakami. (2021). Critical layer thickness of wurtzite heterostructures with arbitrary pairs of growth planes and slip systems. Semiconductor Science and Technology. 36(8). 85016–85016. 1 indexed citations
13.
14.
Kafar, Anna, Ryota Ishii, Kanako Shojiki, et al.. (2021). Structural and emission improvement of cyan-emitting InGaN quantum wells by introducing a large substrate misorientation angle. Optical Materials Express. 12(1). 119–119. 1 indexed citations
15.
Matsuda, Yoshinobu, Mitsuru Funato, & Yoichi Kawakami. (2020). Doping and fabrication of polar-plane-free faceted InGaN LEDs with polychromatic emission properties on (1¯1¯22¯) semipolar planes. Journal of Applied Physics. 128(21). 12 indexed citations
16.
Shojiki, Kanako, Ryota Ishii, Kenjiro Uesugi, et al.. (2019). Impact of face-to-face annealed sputtered AlN on the optical properties of AlGaN multiple quantum wells. AIP Advances. 9(12). 21 indexed citations
17.
Ishii, Ryota, Shinichi Shikata, Tokuyuki Teraji, et al.. (2018). Isotopic effects on phonons and excitons in diamond studied by deep-ultraviolet continuous-wave photoluminescence spectroscopy. Japanese Journal of Applied Physics. 58(1). 10904–10904. 4 indexed citations
18.
Okamoto, Koichi, Yoichi Kawakami, Shigeo Fujita, & Masahide Terazima. (2002). Photothermal processes of wide-bandgap semiconductors probed by the transient grating method. 17. 1 indexed citations
19.
Ueba, Masazumi, et al.. (1993). Study on On-Board Large Mesh Antenna Reflector with High Surface Accuracy. Transactions of the Institute of Electronics, Information and Communication Engineers. 76(5). 468–475. 2 indexed citations
20.
Kawakami, Yoichi, et al.. (1987). On-board Ka-band multibeam antenna system with high pointing accuracy for ETS-VI. Global Communications Conference. 2. 952–956. 2 indexed citations

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

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