H
Hiroshi Segawa
Researcher at University of Tokyo
Publications - 283
Citations - 8602
Hiroshi Segawa is an academic researcher from University of Tokyo. The author has contributed to research in topics: Perovskite (structure) & Porphyrin. The author has an hindex of 45, co-authored 254 publications receiving 6661 citations. Previous affiliations of Hiroshi Segawa include National Presto Industries & Florida State University College of Arts and Sciences.
Papers
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Small photocarrier effective masses featuring ambipolar transport in methylammonium lead iodide perovskite: A density functional analysis
TL;DR: The first theoretical estimation of effective masses of photocarriers in CH3NH3PbI3 is reported, consistent with the long-range ambipolar transport property and with the larger diffusion constant for electrons compared with that for holes in the perovskite, which enable efficient photovoltaic conversion.
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Hysteresis-free perovskite solar cells made of potassium-doped organometal halide perovskite
Zeguo Tang,Takeru Bessho,Fumiyasu Awai,Takumi Kinoshita,Masato M. Maitani,Ryota Jono,Takurou N. Murakami,Haibin Wang,Takaya Kubo,Satoshi Uchida,Hiroshi Segawa +10 more
TL;DR: It is concluded that stagnation-less carrier transportation could minimise the I-V hysteresis of PSCs.
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Substituent-control exciton in J-aggregates of protonated water-insoluble porphyrins.
Shinsuke Okada,Hiroshi Segawa +1 more
TL;DR: Results indicate that the nature of the exciton coupling of the S1 transition dipole moment can be systematically changed by the substituents.
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Wideband dye-sensitized solar cells employing a phosphine-coordinated ruthenium sensitizer
TL;DR: In this paper, single and tandem dye-sensitized solar cells with high power-conversion efficiencies and large photocurrent densities are fabricated using a photosensitizer whose long wavelength absorption originates from a spin-forbidden single-triplet transition.
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The Main Progress of Perovskite Solar Cells in 2020-2021.
Tianhao Wu,Zhenzhen Qin,Yanbo Wang,Yongzhen Wu,Wei Chen,Shufang Zhang,Molang Cai,Songyuan Dai,Jing Zhang,Jian Liu,Zhongmin Zhou,Xiao Liu,Hiroshi Segawa,Hairen Tan,Qunwei Tang,Junfeng Fang,Yaowen Li,Liming Ding,Zhijun Ning,Yabing Qi,Yiqiang Zhang,Liyuan Han +21 more
TL;DR: In this paper, a review summarizes the main progress of perovskite solar cells in 2020 and 2021 from the aspects of efficiency, stability and tandem devices, and a brief discussion on the development of PSC modules and its challenges toward practical application is provided.