Takeo Oku

10.1k total citations
435 papers, 8.2k citations indexed

About

Takeo Oku is a scholar working on Materials Chemistry, Electrical and Electronic Engineering and Polymers and Plastics. According to data from OpenAlex, Takeo Oku has authored 435 papers receiving a total of 8.2k indexed citations (citations by other indexed papers that have themselves been cited), including 276 papers in Materials Chemistry, 246 papers in Electrical and Electronic Engineering and 91 papers in Polymers and Plastics. Recurrent topics in Takeo Oku's work include Perovskite Materials and Applications (124 papers), Conducting polymers and applications (85 papers) and Chalcogenide Semiconductor Thin Films (81 papers). Takeo Oku is often cited by papers focused on Perovskite Materials and Applications (124 papers), Conducting polymers and applications (85 papers) and Chalcogenide Semiconductor Thin Films (81 papers). Takeo Oku collaborates with scholars based in Japan, Sweden and United States. Takeo Oku's co-authors include Atsushi Suzuki, Ichihito Narita, Atsushi Nishiwaki, Katsuaki Suganuma, Masaki Kuno, Tsuyoshi Akiyama, Naoki Ueoka, Masanori Murakami, Yuya Ohishi and Naruhiro Koi and has published in prestigious journals such as Physical Review Letters, Angewandte Chemie International Edition and SHILAP Revista de lepidopterología.

In The Last Decade

Takeo Oku

428 papers receiving 8.0k citations

Peers

Takeo Oku

EEE

EOMM

O. Chauvet France

Lu‐Chang Qin United States

Gang Wang China

Tetsuo Soga Japan

Viktor G. Hadjiev United States

Tsutomu Minami Japan

Maxim V. Zdorovets Kazakhstan

Jie Zhu China

Wei‐Qiang Han China

Takayuki Komatsu Japan

O. Chauvet France

Takeo Oku

3.6k ×0.6

1.8k ×0.5

EEE

2.0k ×1.6

1.4k ×1.2

EOMM

974 ×1.0

Citations per year, relative to Takeo Oku Takeo Oku (= 1×) peers O. Chauvet

Countries citing papers authored by Takeo Oku

Since Specialization

Citations

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

Fields of papers citing papers by Takeo Oku

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Takeo Oku

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

Oku, Takeo, et al.. (2025). Effects of K- or Ge-additions to formamidinium-based perovskite crystals on electronic structures and photovoltaic properties. Chemical Physics Letters. 865. 141937–141937. 1 indexed citations

Oku, Takeo, et al.. (2024). Stable decaphenylcyclopentasilane hole transport layers for double-stacked perovskite photovoltaic devices fabricated under ambient atmosphere. SHILAP Revista de lepidopterología. 4. 100066–100066. 3 indexed citations

Oku, Takeo, et al.. (2024). Accelerated formation of photoactive formamidinium-based lead triiodide perovskite crystals by the addition of copper iodide. SHILAP Revista de lepidopterología. 3. 100052–100052. 4 indexed citations

Suzuki, Atsushi & Takeo Oku. (2024). Electronic structures, thermal properties and molecular dynamics of CsGdCl3 and CsNdCl3 perovskite crystals by first-principles calculations. Journal of Physics and Chemistry of Solids. 194. 112243–112243. 1 indexed citations

Suzuki, Atsushi, et al.. (2024). Effects of Metal Phthalocyanine and Naphthalocyanine on Perovskite Solar Cells. Journal of Electronic Materials. 53(10). 6049–6063. 3 indexed citations

Suzuki, Atsushi, et al.. (2023). First-principles calculations and device characterizations of formamidinium-cesium lead triiodide perovskite crystals stabilized by germanium or copper. Japanese Journal of Applied Physics. 62(SK). SK1015–SK1015. 12 indexed citations

Oku, Takeo, et al.. (2023). Effects of ethylammonium and rubidium addition to guanidinium-based CH3NH3PbI3 perovskite photovoltaic devices prepared at 190 °C in ambient air. Materials Today Communications. 38. 107623–107623. 3 indexed citations

Suzuki, Atsushi, et al.. (2023). Electronic structures and photovoltaic properties of copper- or tin-doped cesium-based perovskite crystals. Open Ceramics. 16. 100476–100476. 6 indexed citations

Suzuki, Atsushi, et al.. (2023). Metallophtalocyanine Used Interface Engineering for Improving Long‐Term Stability of Methylammonium Lead Triiodide Perovskite. physica status solidi (a). 220(12). 5 indexed citations

10.

Oku, Takeo, et al.. (2022). Fabrication and characterization of CH ₃ NH ₃ PbI ₃ solar cells with added guanidinium and inserted with decaphenylpentasilane. Japanese Journal of Applied Physics. 61(SB). SB1024–SB1024. 17 indexed citations

11.

Akiyama, Tsuyoshi, et al.. (2022). Electrochemical fabrication of hierarchical thin films consisting of different polythiophenes and change in photoelectric conversion properties with film thickness. Japanese Journal of Applied Physics. 61(6). 61008–61008. 3 indexed citations

12.

Suzuki, Kazumasa, Balachandran Jeyadevan, Takeo Oku, et al.. (2021). Preparation of silver-nanoparticle-loaded C₆₀-ethylenediamine adduct microparticles and their application to photoelectric conversion. Applied Physics Express. 14(6). 67003–67003. 1 indexed citations

13.

Oku, Takeo, et al.. (2021). Effects of Polysilane Addition to Chlorobenzene and High Temperature Annealing on CH3NH3PbI3 Perovskite Photovoltaic Devices. Coatings. 11(6). 665–665. 30 indexed citations

14.

Suzuki, Atsushi, et al.. (2019). Effects of poly(methyl methacrylate) addition to perovskite photovoltaic devices. AIP conference proceedings. 2067. 20018–20018. 16 indexed citations

15.

Ueoka, Naoki & Takeo Oku. (2018). Stability Characterization of PbI₂-Added CH₃NH₃PbI₃–ₓClₓ Photovoltaic Devices. ACS Applied Materials & Interfaces.

16.

Oku, Takeo. (2014). High-resolution electron microscopy and electron diffraction of perovskite-type superconducting copper oxides. Nanotechnology Reviews. 3(5). 11 indexed citations

17.

Oku, Takeo, et al.. (2008). Formation and characterization of MEH-PPV/PCBM-based bulk heterojunction solar cells. Journal of Ceramic Processing Research. 9(6). 549–552. 5 indexed citations

18.

Oku, Takeo, et al.. (2006). Spirituality Determined by Will and Joy Plays a Part in Salutogenesis. 46(12). 1029–1035.

19.

OKU, Tatsuo, et al.. (1998). Effects of titanium impregnation on the thermal conductivity of carbon/copper composite materials. Journal of Nuclear Materials. 257(1). 59–66. 30 indexed citations

20.

Oku, Takeo. (1982). Photoactivation of O2-Evolving System Accompanying Thiol Generation in Spruce Chloroplasts. Photobiochemistry and photobiophysics.. 4(5-6). 275–281. 3 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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