Kayo Koike
About
Kayo Koike is a scholar working on Electronic, Optical and Magnetic Materials, Condensed Matter Physics and Electrical and Electronic Engineering.
According to data from OpenAlex, Kayo Koike has authored 22 papers receiving a total of 828 indexed citations (citations by other indexed papers that have themselves been cited), including 12 papers in Electronic, Optical and Magnetic Materials, 10 papers in Condensed Matter Physics and 10 papers in Electrical and Electronic Engineering. Recurrent topics in Kayo Koike's work include Ga2O3 and related materials (12 papers), GaN-based semiconductor devices and materials (10 papers) and Advanced Photocatalysis Techniques (6 papers). Kayo Koike is often cited by papers focused on Ga2O3 and related materials (12 papers), GaN-based semiconductor devices and materials (10 papers) and Advanced Photocatalysis Techniques (6 papers). Kayo Koike collaborates with scholars based in Japan, South Korea and Switzerland. Kayo Koike's co-authors include Kyoji Moriya, Kenichi Ishibashi, Hajime Fujie, Tatsuo Miyamura, Hiroshi Yotsuyanagi, Yukako Shintani‐Domoto, Yoshiyuki Matsuura, Katsushi Fujii, Masakazu Sugiyama and Akihiro Nakamura and has published in prestigious journals such as SHILAP Revista de lepidopterología, Journal of The Electrochemical Society and The Journal of Physical Chemistry C.
In The Last Decade
Kayo Koike
22 papers receiving 809 citations
Hit Papers
Peers
Kayo Koike
Tae Seop Lim South Korea
Huihuang Huang China
Kateryna Levada Russia
L. Chen China
Zhiwei Yin China
Huiyan Zhang China
Seung Hee Kang South Korea
Jian Sui China
Peiwen Li China
Citations per year, relative to Kayo Koike Kayo Koike (= 1×)
peers
Tae Seop Lim
Countries citing papers authored by Kayo Koike
Since
Specialization
Citations
This map shows the geographic impact of Kayo Koike'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 Kayo Koike with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Kayo Koike more than expected).
Fields of papers citing papers by Kayo Koike
Since
Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences
This network shows the impact of papers produced by Kayo Koike. 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 Kayo Koike. The network helps show where Kayo Koike may publish in the future.
Co-authorship network of co-authors of Kayo Koike
This figure shows the co-authorship network connecting the top 25 collaborators of Kayo Koike. A scholar is included among the top collaborators of Kayo Koike 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 Kayo Koike. Kayo Koike is excluded from the visualization to improve readability, since they are connected to all nodes in the network.
All Works
1.
Koike, Kayo, et al.. (2023). User-on-demand Renewable Energy Supply System Using Modified DC-bus Signaling. IFAC-PapersOnLine. 56(2). 9098–9103.
2.
Koike, Kayo, et al.. (2022). Effects of Ag Nanoparticle Coated Metal Electrodes on Electrochemical CO<sub>2</sub> Reduction in Aqueous KHCO<sub>3</sub>. SHILAP Revista de lepidopterología. 90(3). 37009–37009.
3.
Fujii, Katsushi, Takenari Goto, Kayo Koike, et al.. (2021). Carrier Pathway for Photoelectrochemical Water Oxidation with Intermediate State in n-type GaN Compared with Route of Anodic Corrosion. The Journal of Physical Chemistry C. 125(16). 8562–8569.
4.
Koike, Kayo, Katsushi Fujii, Tomonori Kawano, & Satoshi Wada. (2020). Bio-mimic energy storage system with solar light conversion to hydrogen by combination of photovoltaic devices and electrochemical cells inspired by the antenna-associated photosystem II. Plant Signaling & Behavior. 15(3). 1723946–1723946.
5.
Sakamoto, Yuki, Yusuke Noda, Kaoru Ohno, et al.. (2019). First principles calculations of surface dependent electronic structures: a study on β-FeOOH and γ-FeOOH. Physical Chemistry Chemical Physics. 21(34). 18486–18494.
6.
Koike, Kayo, et al.. (2019). Distributed control of a user-on-demand renewable-energy power-source system using battery and hydrogen hybrid energy-storage devices. International Journal of Hydrogen Energy. 44(50). 27542–27552.
7.
Koike, Kayo, Takenari Goto, Shinichiro Nakamura, Satoshi Wada, & Katsushi Fujii. (2018). Investigation of carrier transfer mechanism of NiO-loaded n-type GaN photoanodic reaction for water oxidation by comparison between band model and optical measurements. MRS Communications. 8(2). 480–486.
8.
Nakamura, Akihiro, Kayo Koike, Shin Sato, et al.. (2017). Band Alignment at n-GaN/Electrolyte Interface Explored by Photo-Induced Offset of Open-Circuit Potential for Efficient Water Splitting. ECS Transactions. 77(4). 25–30.
9.
Koike, Kayo, Kazuhiro Yamamoto, Satoshi Ohara, et al.. (2017). Effects of NiO-loading on n-type GaN photoanode for photoelectrochemical water splitting using different aqueous electrolytes. International Journal of Hydrogen Energy. 42(15). 9493–9499.
10.
Koike, Kayo, Kazuhiro Yamamoto, Satoshi Ohara, et al.. (2016). Photoelectrochemical Property Differences between NiO Dots and Layer on n-Type GaN for Water Splitting. Journal of The Electrochemical Society. 163(13). H1091–H1095.
11.
Nakamura, Akihiro, Yasuyuki Ota, Kayo Koike, et al.. (2015). A 24.4% solar to hydrogen energy conversion efficiency by combining concentrator photovoltaic modules and electrochemical cells. Applied Physics Express. 8(10). 107101–107101.
12.
Koike, Kayo, Akihiro Nakamura, Masakazu Sugiyama, Yoshiaki Nakano, & Katsushi Fujii. (2014). Surface stability of n‐type GaN depending on carrier concentration and electrolytes under photoelectrochemical reactions. Physica status solidi. C, Conferences and critical reviews/Physica status solidi. C, Current topics in solid state physics. 11(3-4). 821–823.
13.
Koike, Kayo, Akihiro Nakamura, Masakazu Sugiyama, Yoshiaki Nakano, & Katsushi Fujii. (2014). Surface Stabilities of n-type GaN Dependent on Electrolyte under Photoelectrochemical Reactions. MRS Proceedings. 1647.
14.
Fujii, Katsushi, et al.. (2012). Photoluminescence changes in n‐type GaN samples after photoelectrochemical treatment. Physica status solidi. C, Conferences and critical reviews/Physica status solidi. C, Current topics in solid state physics. 9(3-4). 715–718.
15.
Fujii, Katsushi, et al.. (2011). Time dependence of water‐reducing photocurrent with change of the characteristics of n‐type GaN photo‐illuminated working electrodes. Physica status solidi. C, Conferences and critical reviews/Physica status solidi. C, Current topics in solid state physics. 8(7-8). 2457–2459.
16.
Koike, Kayo, Jinsub Park, Hyojong Lee, et al.. (2011). Improvement of Light Extraction Efficiency and Reduction of Leakage Current in GaN-Based LED Via V-Pit Formation. IEEE Photonics Technology Letters. 24(6). 449–451.
17.
Koike, Kayo, Keiichi Sato, Katsushi Fujii, Takenari Goto, & Takafumi Yao. (2010). Time variation of GaN photoelectrochemical reactions affected by light intensity and applied bias. Physica status solidi. C, Conferences and critical reviews/Physica status solidi. C, Current topics in solid state physics. 7(7-8). 2221–2223.
18.
Takaki, Akinobu, Masafumi Tatsukawa, Yudai Iwasaki, et al.. (2009). Hepatitis C virus NS4 protein impairs the Th1 polarization of immature dendritic cells. Journal of Viral Hepatitis. 17(8). 555–562.
19.
Fujii, Katsushi, Keiichi Sato, Takashi Kato, Kayo Koike, & Takafumi Yao. (2009). Surface changes by GaN photoelectrochemical treatment using various electrolytes with and without C2H5OH. Physica status solidi. C, Conferences and critical reviews/Physica status solidi. C, Current topics in solid state physics. 6(S2).
20.
Moriya, Kyoji, Yoshiyuki Matsuura, Tatsuo Miyamura, et al.. (1997). Hepatitis C virus core protein induces hepatic steatosis in transgenic mice.. Journal of General Virology. 78(7). 1527–1531.
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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