Tandem photovoltaic-photoelectrochemical GaAs/InGaAsP-WO3/BiVO4 device for solar hydrogen generation

Sonya Kosar; Yuriy Pihosh; Ivan Turkevych; Kazuma Mawatari; Jin Uemura; Yutaka Kazoe; Kikuo Makita; Takeyoshi Sugaya; Takuya Matsui; Daisuke Fujita; Masahiro Tosa; Yaroslav M. Struk; Michio Kondo; Takehiko Kitamori

doi:10.7567/JJAP.55.04ES01

Tandem photovoltaic-photoelectrochemical GaAs/InGaAsP-WO₃/BiVO₄ device for solar hydrogen generation

Sonya Kosar, Yuriy Pihosh, Ivan Turkevych, Kazuma Mawatari, Jin Uemura, Yutaka Kazoe, Kikuo Makita, Takeyoshi Sugaya, Takuya Matsui, Daisuke Fujita, Masahiro Tosa, Yaroslav M. Struk, Michio Kondo, Takehiko Kitamori

Research output: Contribution to journal › Article › peer-review

26 Citations (Scopus)

Abstract

We demonstrated highly efficient solar hydrogen generation via water splitting by photovoltaic-photoelectrochemical (PV-PEC) tandem device based on GaAs/InGaAsP (PV cell) and WO₃/BiVO₄ core/shell nanorods (PEC cell). We utilized extremely thin absorber (ETA) concept to design the WO₃/BiVO₄ core/shell heterojunction nanorods and obtained the highest efficiencies of generation, separation and transfer of the photoinduced charge carriers that are possible for the WO₃/BiVO₄ material combination. The PV-PEC tandem shows stable water splitting photocurrent of 6.56mA&cm%2 under standard AM1.5G solar light that corresponds to the record solar-to-hydrogen (STH) conversion efficiency of 8.1%.

Original language	English
Article number	04ES01
Journal	Japanese journal of applied physics
Volume	55
Issue number	4
DOIs	https://doi.org/10.7567/JJAP.55.04ES01
Publication status	Published - 2016 Apr
Externally published	Yes

ASJC Scopus subject areas

Engineering(all)
Physics and Astronomy(all)

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This output contributes to the following UN Sustainable Development Goals (SDGs)

Access to Document

10.7567/JJAP.55.04ES01

Cite this

Kosar, S., Pihosh, Y., Turkevych, I., Mawatari, K., Uemura, J., Kazoe, Y., Makita, K., Sugaya, T., Matsui, T., Fujita, D., Tosa, M., Struk, Y. M., Kondo, M., & Kitamori, T. (2016). Tandem photovoltaic-photoelectrochemical GaAs/InGaAsP-WO₃/BiVO₄ device for solar hydrogen generation. Japanese journal of applied physics, 55(4), Article 04ES01. https://doi.org/10.7567/JJAP.55.04ES01

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abstract = "We demonstrated highly efficient solar hydrogen generation via water splitting by photovoltaic-photoelectrochemical (PV-PEC) tandem device based on GaAs/InGaAsP (PV cell) and WO3/BiVO4 core/shell nanorods (PEC cell). We utilized extremely thin absorber (ETA) concept to design the WO3/BiVO4 core/shell heterojunction nanorods and obtained the highest efficiencies of generation, separation and transfer of the photoinduced charge carriers that are possible for the WO3/BiVO4 material combination. The PV-PEC tandem shows stable water splitting photocurrent of 6.56mA&cm%2 under standard AM1.5G solar light that corresponds to the record solar-to-hydrogen (STH) conversion efficiency of 8.1%.",

author = "Sonya Kosar and Yuriy Pihosh and Ivan Turkevych and Kazuma Mawatari and Jin Uemura and Yutaka Kazoe and Kikuo Makita and Takeyoshi Sugaya and Takuya Matsui and Daisuke Fujita and Masahiro Tosa and Struk, {Yaroslav M.} and Michio Kondo and Takehiko Kitamori",

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AU - Kosar, Sonya

AU - Pihosh, Yuriy

AU - Turkevych, Ivan

AU - Mawatari, Kazuma

AU - Uemura, Jin

AU - Kazoe, Yutaka

AU - Makita, Kikuo

AU - Sugaya, Takeyoshi

AU - Matsui, Takuya

AU - Fujita, Daisuke

AU - Tosa, Masahiro

AU - Struk, Yaroslav M.

AU - Kondo, Michio

AU - Kitamori, Takehiko

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