Koichi Tamaki

3.8k total citations
55 papers, 3.3k citations indexed

About

Koichi Tamaki is a scholar working on Materials Chemistry, Organic Chemistry and Physical and Theoretical Chemistry. According to data from OpenAlex, Koichi Tamaki has authored 55 papers receiving a total of 3.3k indexed citations (citations by other indexed papers that have themselves been cited), including 29 papers in Materials Chemistry, 19 papers in Organic Chemistry and 13 papers in Physical and Theoretical Chemistry. Recurrent topics in Koichi Tamaki's work include Porphyrin and Phthalocyanine Chemistry (20 papers), Fullerene Chemistry and Applications (12 papers) and Photochemistry and Electron Transfer Studies (11 papers). Koichi Tamaki is often cited by papers focused on Porphyrin and Phthalocyanine Chemistry (20 papers), Fullerene Chemistry and Applications (12 papers) and Photochemistry and Electron Transfer Studies (11 papers). Koichi Tamaki collaborates with scholars based in Japan, United States and China. Koichi Tamaki's co-authors include Hiroshi Imahori, Yoshiteru Sakata, Shunichi Fukuzumi, Dirk M. Guldi, Chuping Luo, Osamu Ito, Mamoru Fujitsuka, Y. SAKATA, Yutaka Yoshida and Hiroko Yamada and has published in prestigious journals such as Journal of the American Chemical Society, Angewandte Chemie International Edition and The Journal of Physical Chemistry B.

In The Last Decade

Koichi Tamaki

53 papers receiving 3.2k citations

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
Koichi Tamaki Japan	25	2.3k	1.4k	1.0k	775	430	55	3.3k
Giovanni Bottari Spain	33	3.1k 1.3×	1.8k 1.3×	1.2k 1.2×	514 0.7×	255 0.6×	82	4.2k
Scott M. Dyar United States	26	1.1k 0.5×	546 0.4×	766 0.8×	399 0.5×	188 0.4×	33	2.0k
Shigeyuki Yagi Japan	28	1.4k 0.6×	623 0.4×	668 0.7×	235 0.3×	211 0.5×	120	2.1k
Louise E. Sinks United States	22	1.7k 0.7×	492 0.3×	1.1k 1.1×	731 0.9×	97 0.2×	29	2.5k
Raghu Chitta United States	33	1.6k 0.7×	714 0.5×	557 0.6×	322 0.4×	331 0.8×	69	3.2k
Shigeru Murata Japan	26	617 0.3×	1.1k 0.7×	328 0.3×	481 0.6×	255 0.6×	100	2.1k
Mahesh Hariharan India	32	2.2k 1.0×	858 0.6×	1.6k 1.6×	743 1.0×	102 0.2×	146	4.1k
Sun‐Young Park South Korea	28	1.3k 0.6×	459 0.3×	881 0.9×	612 0.8×	155 0.4×	87	2.5k
Sanghyuk Park South Korea	26	1.8k 0.8×	746 0.5×	1.7k 1.7×	784 1.0×	143 0.3×	65	3.2k
Benjamin Fimmel Germany	14	1.6k 0.7×	825 0.6×	881 0.9×	337 0.4×	79 0.2×	14	2.5k

Countries citing papers authored by Koichi Tamaki

Since Specialization

Citations

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

Fields of papers citing papers by Koichi Tamaki

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Koichi Tamaki

This figure shows the co-authorship network connecting the top 25 collaborators of Koichi Tamaki. A scholar is included among the top collaborators of Koichi Tamaki 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 Koichi Tamaki. Koichi Tamaki 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

Tamaki, Koichi, Takaya Kubo, Nathanaëlle Schneider, et al.. (2025). Enhancing Open-Circuit Voltage in Infrared PbS Quantum Dot Heterojunction Solar Cells Using ZnO Nanowires Passivated by Atomic Layer Deposition of Al₂O₃. ACS Applied Energy Materials. 8(10). 6308–6319.

Tamaki, Koichi, Naoyuki Shibayama, Ryota Jono, et al.. (2025). Air stability of ZnO nanowire–PbS quantum dot heterojunction solar cells with dicarboxylate-bridged PbS colloidal quantum dot layer as a hole transport material. Chemistry Letters. 54(7).

Cojocaru, Ludmila, Satoshi Uchida, Koichi Tamaki, et al.. (2017). Determination of unique power conversion efficiency of solar cell showing hysteresis in the I-V curve under various light intensities. Scientific Reports. 7(1). 11790–11790. 42 indexed citations

Kawata, Kentaro, et al.. (2015). Dye-sensitised and Perovskite Solar Cells as Indoor Energy Harvestors. Journal of Photopolymer Science and Technology. 28(3). 415–417. 32 indexed citations

Dy, Joanne T., Koichi Tamaki, Jotaro Nakazaki, et al.. (2014). Dye-sensitized solar cells using ethynyl-linked porphyrin trimers. Physical Chemistry Chemical Physics. 16(10). 4551–4551. 23 indexed citations

Liu, Yizhu, Hong Lin, Jianbao Li, et al.. (2012). Ethynyl-linked push–pull porphyrin hetero-dimers for near-IR dye-sensitized solar cells: photovoltaic performances versus excited-state dynamics. Physical Chemistry Chemical Physics. 14(48). 16703–16703. 31 indexed citations

Liu, Yizhu, Hong Lin, Joanne T. Dy, et al.. (2011). N-fused carbazole–zinc porphyrin–free-base porphyrin triad for efficient near-IR dye-sensitized solar cells. Chemical Communications. 47(13). 4010–4010. 93 indexed citations

Komatsu, Makoto, Koichi Tamaki, Jotaro Nakazaki, et al.. (2009). Push-Pull Quinoid Dye for Dye Sensitized Solar Cell. ECS Transactions. 16(25). 65–72. 3 indexed citations

Tamaki, Koichi, Sachiko Matsushita, & Masatsugu Shimomura. (2007). Fabrication of polymeric particles composed of two-dimensionally self-assembled nanoparticles by use of a microporous film as a template. Colloids and Surfaces A Physicochemical and Engineering Aspects. 313-314. 630–635. 7 indexed citations

10.

Fujisawa, Jun-ichi, Naoya Tajima, Koichi Tamaki, Masatsugu Shimomura, & Teruya Ishihara. (2007). Electronic Interactions between Inorganic Nanowires and Organic Electron Acceptors: Drastic Changes in Optical Response and Molecular Vibration. The Journal of Physical Chemistry C. 111(3). 1146–1149. 23 indexed citations

11.

Saeki, Hideyuki, Yuichiro Tsunemi, Kōichi Nakamura, et al.. (2006). Analysis of GM-CSF gene polymorphisms (3606T/C and 3928C/T) in Japanese patients with atopic dermatitis. Clinical and Experimental Dermatology. 31(2). 278–280. 11 indexed citations

12.

Hattori, Naka, Takehiko Kaneko, Koichi Tamaki, Koichi Makimura, & Takashi Mochizuki. (2003). A case of kerion celsi due to <emph type="2">Arthroderma benhamiae</emph> identified by DNA sequences of nuclear ribosomal internal transcribed spacer 1 regions. Medical Mycology. 41(3). 249–251. 9 indexed citations

13.

Imahori, Hiroshi, Koichi Tamaki, Yasuyuki Araki, et al.. (2002). Stepwise Charge Separation and Charge Recombination in Ferrocene-meso,meso-Linked Porphyrin Dimer−Fullerene Triad. Journal of the American Chemical Society. 124(18). 5165–5174. 191 indexed citations

14.

Morita, Yasushi, Takashi Aoki, Kozo Fukui, et al.. (2002). A New Trend in Phenalenyl Chemistry: A Persistent Neutral Radical, 2,5,8-Tri-tert-butyl-1,3-diazaphenalenyl, and the Excited Triplet State of the Gablesyn-Dimer in the Crystal of Column Motif. Angewandte Chemie International Edition. 41(10). 1793–1796. 156 indexed citations

15.

Imahori, Hiroshi, Hiroyuki Norieda, Yukio Nishimura, et al.. (2000). Chain Length Effect on the Structure and Photoelectrochemical Properties of Self-Assembled Monolayers of Porphyrins on Gold Electrodes. The Journal of Physical Chemistry B. 104(6). 1253–1260. 161 indexed citations

16.

Tamaki, Koichi, Hiroshi Imahori, Yoshiteru Sakata, Yukio Nishimura, & Iwao Yamazaki. (1999). Synthesis and photophysical properties of a diporphyrin–fullerene triad. Chemical Communications. 625–626. 44 indexed citations

17.

Okamura, Ken, et al.. (1998). Familial isolated hyperparathyroidism due to multiple adenomas associated with ossifying jaw fibroma and multiple uterine adenomyomatous polyps. European Journal of Endocrinology. 138(5). 557–561. 27 indexed citations

18.

Tamaki, Koichi, Yasushi Morita, J. Toyoda, et al.. (1997). Synthesis and properties of 1,6-diazaphenalenes and their charge-transfer complexes with tetracyanoquinodimethane. Tetrahedron Letters. 38(26). 4583–4586. 13 indexed citations

19.

Kiyohara, Yutaka, et al.. (1985). Effects of hematocrit on brain metabolism in experimentally induced cerebral ischemia in spontaneously hypertensive rats (SHR).. Stroke. 16(5). 835–840. 21 indexed citations

20.

Fujishima, Masatoshi, Yasuyuki Morotomi, Koichi Tamaki, et al.. (1978). Brain metabolism and arterial acid-base balance following bilateral carotid occlusion in normotensive and experimental hypertensive rats.. Munich Personal RePEc Archive (Ludwig Maximilian University of Munich). 5(1). 27–32. 4 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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