Katsuro Okuyama

1.6k total citations · 1 hit paper
43 papers, 1.4k citations indexed

About

Katsuro Okuyama is a scholar working on Electrical and Electronic Engineering, Condensed Matter Physics and Atomic and Molecular Physics, and Optics. According to data from OpenAlex, Katsuro Okuyama has authored 43 papers receiving a total of 1.4k indexed citations (citations by other indexed papers that have themselves been cited), including 26 papers in Electrical and Electronic Engineering, 15 papers in Condensed Matter Physics and 11 papers in Atomic and Molecular Physics, and Optics. Recurrent topics in Katsuro Okuyama's work include Physics of Superconductivity and Magnetism (14 papers), Chalcogenide Semiconductor Thin Films (8 papers) and Organic Light-Emitting Diodes Research (8 papers). Katsuro Okuyama is often cited by papers focused on Physics of Superconductivity and Magnetism (14 papers), Chalcogenide Semiconductor Thin Films (8 papers) and Organic Light-Emitting Diodes Research (8 papers). Katsuro Okuyama collaborates with scholars based in Japan and United Kingdom. Katsuro Okuyama's co-authors include Katsutoshi Nagai, Junji Kido, Shigetoshi Ohshima, Yuichi Mitobe, Shiro Kambe, Kenji Hiraga, Rika Sekine, Akira Takagi, Hiroyuki Ishida and T. Wakiyama 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

Katsuro Okuyama

41 papers receiving 1.4k citations

Hit Papers

Bright red light-emitting organic electroluminescent devi... 1994 2026 2004 2015 1994 100 200 300 400
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. Bright red light-emitting organic electroluminescent devices having a europium complex as an emitter
    1994 459 citations Junji Kido, Katsutoshi Nagai et al. Applied Physics Letters profile →

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
Katsuro Okuyama Japan 14 1.1k 669 487 182 102 43 1.4k
D. Berner Switzerland 16 1.1k 1.0× 559 0.8× 490 1.0× 172 0.9× 91 0.9× 33 1.5k
Tatsuro Usuki Japan 12 533 0.5× 451 0.7× 205 0.4× 130 0.7× 106 1.0× 35 867
A. Borissov United States 6 953 0.8× 340 0.5× 348 0.7× 332 1.8× 184 1.8× 7 1.2k
P. Ostoja Italy 20 980 0.9× 375 0.6× 353 0.7× 125 0.7× 373 3.7× 39 1.3k
Jacob Baas Netherlands 14 1.1k 1.0× 823 1.2× 259 0.5× 426 2.3× 247 2.4× 28 1.5k
Hideyuki Kunugita Japan 20 988 0.9× 816 1.2× 302 0.6× 138 0.8× 294 2.9× 53 1.3k
Gary Hayes United Kingdom 11 997 0.9× 528 0.8× 542 1.1× 60 0.3× 213 2.1× 22 1.3k
John T. Kenney United States 10 1.6k 1.4× 1.3k 1.9× 452 0.9× 383 2.1× 224 2.2× 25 1.9k
A. DeMasi United States 18 733 0.6× 920 1.4× 258 0.5× 375 2.1× 124 1.2× 25 1.3k
Kenichi Shibata Kenichi Shibata Japan 15 555 0.5× 389 0.6× 201 0.4× 100 0.5× 38 0.4× 19 890

Countries citing papers authored by Katsuro Okuyama

Since Specialization
Citations

This map shows the geographic impact of Katsuro Okuyama'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 Katsuro Okuyama with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Katsuro Okuyama more than expected).

Fields of papers citing papers by Katsuro Okuyama

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Katsuro Okuyama. 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 Katsuro Okuyama. The network helps show where Katsuro Okuyama may publish in the future.

Co-authorship network of co-authors of Katsuro Okuyama

This figure shows the co-authorship network connecting the top 25 collaborators of Katsuro Okuyama. A scholar is included among the top collaborators of Katsuro Okuyama 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 Katsuro Okuyama. Katsuro Okuyama 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.
Mitobe, Yuichi, et al.. (2000). Hydrogen Gas Sensing Using a Pd-Coated Cantilever. Japanese Journal of Applied Physics. 39(6R). 3584–3584. 38 indexed citations
2.
Kambe, Shiro, Eiji Sato, Takahiro Akao, et al.. (1999). Superconductivity above 30 K in[(Bi1−xMox)0.33Cu0.67]Sr2YCu2Oy:Appearance of superconductivity by transfer of holes from a block layer to aCuO2layer. Physical review. B, Condensed matter. 60(1). 687–697. 4 indexed citations
3.
Okuyama, Katsuro, et al.. (1997). Improved Response Time of Al–Al2O3–Pd Tunnel Diode Hydrogen Gas Sensor. Japanese Journal of Applied Physics. 36(11R). 6905–6905. 7 indexed citations
4.
Ito, Yasuaki, et al.. (1997). Hydrogen-induced light emission from an organic electroluminescent device. Applied Physics Letters. 71(20). 2877–2879. 1 indexed citations
5.
Okuyama, Katsuro, et al.. (1996). Current vs Voltage Characteristics of Al–Al 2O 3–Pd Tunnel Junction Hydrogen Sensor. Japanese Journal of Applied Physics. 35(4R). 2266–2266. 10 indexed citations
6.
Kambe, Shiro, Takahiro Akao, Shigetoshi Ohshima, & Katsuro Okuyama. (1995). Preparation and physical properties of the superconductor [(Bi1−xMox)0.33Cu0.67]Sr2YCu2Ox. Physica C Superconductivity. 255(1-2). 151–156. 3 indexed citations
7.
Kido, Junji, et al.. (1994). Bright red light-emitting organic electroluminescent devices having a europium complex as an emitter. Applied Physics Letters. 65(17). 2124–2126. 459 indexed citations breakdown →
8.
Ohshima, Shigetoshi, et al.. (1994). Relationship between Tc and Cu Valence and Bond Lengths of Cu–Cu and Cu–O for Ba2-xEu1+xCu3O7-y Compounds. Japanese Journal of Applied Physics. 33(3R). 1314–1314. 7 indexed citations
9.
Kambe, Shiro, et al.. (1994). Structure of Ba2InCuOy: A new layered cuprate with a blocking layer of BaInOy perovskite. Physica C Superconductivity. 220(1-2). 119–126. 21 indexed citations
10.
Okuyama, Katsuro, Kazuhiro Tada, & Shigetoshi Ohshima. (1991). Calcium Stearate Thin Films Evaporated onto NaCl. Japanese Journal of Applied Physics. 30(8R). 1808–1808. 4 indexed citations
11.
Kambe, Shiro, et al.. (1991). Bi and Cu valences of Bi-based superconductors. Physica C Superconductivity. 190(1-2). 139–140. 14 indexed citations
12.
Ohshima, Shigetoshi & Katsuro Okuyama. (1990). Magnetic Shielding Effect of Ba2YCu3O7-δ Plates. Japanese Journal of Applied Physics. 29(11R). 2403–2403. 13 indexed citations
13.
Takagi, Akira, et al.. (1990). Critical Current Densities in Superconducting Y–Ba–Cu–O Prepared by Chelating Method. Japanese Journal of Applied Physics. 29(10R). 1914–1914. 4 indexed citations
14.
Ohshima, Shigetoshi & Katsuro Okuyama. (1990). Effects of Starting Materials and Preparation Conditions on Superconducting Properties of Ba2YCu3O7-δ Compounds. Japanese Journal of Applied Physics. 29(6R). 1054–1054. 2 indexed citations
15.
Okuyama, Katsuro, et al.. (1989). Improved Tellurium Films by Partially Ionized Vapor Deposition as the Semiconductor Layer of a TFT and a Hydrogen Sensor. Japanese Journal of Applied Physics. 28(5R). 770–770. 7 indexed citations
16.
Okuyama, Katsuro. (1983). Internal Stress in Evaporated Tellurium Films. Japanese Journal of Applied Physics. 22(6R). 934–934.
17.
Okuyama, Katsuro, et al.. (1979). Epitaxial and Amorphous-Crystalline Phase Transition Growth of Evaporated Te Films. Japanese Journal of Applied Physics. 18(3). 507–514. 16 indexed citations
18.
Okuyama, Katsuro. (1976). Low-Temperature Grain Growth of Evaporated Te Films. Japanese Journal of Applied Physics. 15(9). 1807–1808. 1 indexed citations
19.
Okuyama, Katsuro & Yoichi Watanabe. (1976). Effect of Predeposited Ag, Sn, Bi, Al and Se Nucleation Centers on the Grain Growth of Evaporated Te Films. Japanese Journal of Applied Physics. 15(10). 1881–1887. 2 indexed citations
20.
Okuyama, Katsuro, et al.. (1974). Mobility-Dependent Field-Effect Conduction of Vacuum-Deposited CdSe Layers. Japanese Journal of Applied Physics. 13(S1). 793–793. 1 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.

Explore authors with similar magnitude of impact

Breakdown of academic impact, for papers by D. Berner Breakdown of academic impact, for papers by Tatsuro Usuki Breakdown of academic impact, for papers by A. Borissov Breakdown of academic impact, for papers by P. Ostoja Breakdown of academic impact, for papers by Jacob Baas Breakdown of academic impact, for papers by Hideyuki Kunugita Breakdown of academic impact, for papers by Gary Hayes Breakdown of academic impact, for papers by John T. Kenney Breakdown of academic impact, for papers by A. DeMasi Breakdown of academic impact, for papers by Kenichi Shibata Kenichi Shibata
Rankless by CCL
2026