Naoki Kohara

1.5k total citations
26 papers, 1.3k citations indexed

About

Naoki Kohara is a scholar working on Electrical and Electronic Engineering, Materials Chemistry and Atomic and Molecular Physics, and Optics. According to data from OpenAlex, Naoki Kohara has authored 26 papers receiving a total of 1.3k indexed citations (citations by other indexed papers that have themselves been cited), including 24 papers in Electrical and Electronic Engineering, 17 papers in Materials Chemistry and 10 papers in Atomic and Molecular Physics, and Optics. Recurrent topics in Naoki Kohara's work include Chalcogenide Semiconductor Thin Films (20 papers), Quantum Dots Synthesis And Properties (13 papers) and Semiconductor materials and interfaces (8 papers). Naoki Kohara is often cited by papers focused on Chalcogenide Semiconductor Thin Films (20 papers), Quantum Dots Synthesis And Properties (13 papers) and Semiconductor materials and interfaces (8 papers). Naoki Kohara collaborates with scholars based in Japan, United Kingdom and China. Naoki Kohara's co-authors include Takayuki Negami, Takahiro Wada, Mikihiko Nishitani, Shiro Nishiwaki, Yasuhiro Hashimoto, Takashi Hirao, Nobuyuki Nishitani, Hideo Miyake, Masatoshi Kitagawa and Tsuyoshi Ozaki and has published in prestigious journals such as Applied Physics Letters, Journal of Applied Physics and The Astrophysical Journal.

In The Last Decade

Naoki Kohara

24 papers receiving 1.2k citations

Peers

Naoki Kohara

EEE

AMPO

RESE

David S. Albin United States

Marika Bodegård Sweden

J. Hiltner United States

R. A. Mickelsen United States

A. Jasenek Germany

S. Zweigart Germany

D. Braunger Germany

H. Rodríguez-Alvarez Germany

J. Álvarez-Garcı́a Spain

В. Ф. Гременок Belarus

David S. Albin United States

Naoki Kohara

1.1k ×0.9

EEE

1.0k ×0.9

278 ×0.9

AMPO

29 ×1.2

RESE

16 ×0.7

Citations per year, relative to Naoki Kohara Naoki Kohara (= 1×) peers David S. Albin

Countries citing papers authored by Naoki Kohara

Since Specialization

Citations

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

Fields of papers citing papers by Naoki Kohara

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Naoki Kohara

This figure shows the co-authorship network connecting the top 25 collaborators of Naoki Kohara. A scholar is included among the top collaborators of Naoki Kohara 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 Naoki Kohara. Naoki Kohara is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

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20 of 20 papers shown

Suematsu, Y., Toshihiro Tsuzuki, Naoki Kohara, et al.. (2024). Evaluation and verification plan for JASMINE telescope optics on the ground. 185–185.

Matsuda, Yuichi, Toshihiro Tsuzuki, Naoki Kohara, et al.. (2024). Extremely large optical space telescope comprising formation-flying ultra-small satellites: science requirements and telescope concept. 65. 191–191.

Kobayashi, K., S. Tsuneta, Kazuyoshi Kumagai, et al.. (2006). Hard X‐Ray Spectral Observation of a High‐Temperature Thermal Flare. The Astrophysical Journal. 648(2). 1239–1246. 3 indexed citations

Ozaki, Tsuyoshi, et al.. (2004). Development of ultra-light-weight mirror with carbon/carbon composites for optical-IR astronomy. Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE. 5487. 1084–1084. 6 indexed citations

Nishitani, Mikihiko, Takayuki Negami, Naoki Kohara, et al.. (2002). Photovoltaic properties of Cu(In,Ga)Se/sub 2/ thin film solar cell fabricated by coevaporation process. 1. 222–225. 1 indexed citations

Kohara, Naoki, et al.. (2000). Physical Vapor Deposition of Hexagonal and Tetragonal CuIn₅Se₈ Thin Films. Japanese Journal of Applied Physics. 39(11R). 6316–6316. 28 indexed citations

Kohara, Naoki, et al.. (2000). Improvement of Properties of SrTiO₃ Thin Films Deposited at Low Temperature and High Rate by Sputtering Gas. Japanese Journal of Applied Physics. 39(6R). 3519–3519. 3 indexed citations

Wada, Takahiro, Shiro Nishiwaki, Naoki Kohara, et al.. (2000). Physics and Chemistry in Physical Vapor Deposition of Cu(In,Ga)Se₂ Thin Films. Japanese Journal of Applied Physics. 39(S1). 8–8. 3 indexed citations

Nishiwaki, Shiro, Naoki Kohara, Takayuki Negami, Hideo Miyake, & Takahiro Wada. (1999). Microstructure of Cu(In,Ga)Se₂ Films Deposited in Low Se Vapor Pressure. Japanese Journal of Applied Physics. 38(5R). 2888–2888. 20 indexed citations

10.

Nishitani, Mikihiko, Naoki Kohara, Takayuki Negami, et al.. (1998). Analysis of temperature and illumination dependencies of CIS cell performance. Solar Energy Materials and Solar Cells. 50(1-4). 63–70. 7 indexed citations

11.

Hashimoto, Yasuhiro, Naoki Kohara, Takayuki Negami, Nobuyuki Nishitani, & Takahiro Wada. (1998). Chemical bath deposition of Cds buffer layer for GIGS solar cells. Solar Energy Materials and Solar Cells. 50(1-4). 71–77. 100 indexed citations

12.

Wada, Takahiro, Naoki Kohara, Takayuki Negami, & Mikihiko Nishitani. (1997). Growth of CuInSe₂ crystals in Cu-rich Cu–In–Se thin films. Journal of materials research/Pratt's guide to venture capital sources. 12(6). 1456–1462. 63 indexed citations

13.

Nishiwaki, Shiro, Naoki Kohara, Takayuki Negami, Mikihiko Nishitani, & Takahiro Wada. (1997). Characterization of Cu(In,Ga)Se₂/Mo Interface in CIGS Solar Cells. MRS Proceedings. 485. 12 indexed citations

14.

Nishitani, Mikihiko, et al.. (1997). Analysis of transient photocurrents in Cu(In,Ga)Se2 thin film solar cells. Journal of Applied Physics. 82(7). 3572–3575. 15 indexed citations

15.

Kohara, Naoki, Takayuki Negami, Mikihiko Nishitani, Yasuhiro Hashimoto, & Takahiro Wada. (1997). Electrical properties of Na-incorporated Cu(In1−xGax)3Se5 thin films. Applied Physics Letters. 71(6). 835–837. 17 indexed citations

16.

Hashimoto, Yasuhiro, Naoki Kohara, Takayuki Negami, Mikihiko Nishitani, & Takahiro Wada. (1996). Surface Characterization of Chemically Treated Cu(In, Ga)Se₂ Thin Films. Japanese Journal of Applied Physics. 35(9R). 4760–4760. 78 indexed citations

17.

Negami, Takayuki, Mikihiko Nishitani, Naoki Kohara, Yasuhiro Hashimoto, & Takahiro Wada. (1996). Real Time Composition Monitoring Methods in Physical Vapor Deposition oF Cu(In, Ga)Se₂Thin Films. MRS Proceedings. 426. 38 indexed citations

18.

Negami, Takayuki, Naoki Kohara, Mikihiko Nishitani, Takahiro Wada, & Takashi Hirao. (1995). Preparation and characterization of Cu(In1−xGax)3Se5 thin films. Applied Physics Letters. 67(6). 825–827. 97 indexed citations

19.

Kohara, Naoki, Takayuki Negami, Mikihiko Nishitani, & Takahiro Wada. (1995). Preparation of Device-Quality Cu(In, Ga)Se₂ Thin Films Deposited by Coevaporation with Composition Monitor. Japanese Journal of Applied Physics. 34(9A). L1141–L1141. 136 indexed citations

20.

Nishitani, Mikihiko, et al.. (1994). Fabrication of substrate-type CuInSe2 thin film solar cells. Solar Energy Materials and Solar Cells. 35. 203–208. 7 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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