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20 August 2020 Pb free Sn- perovskite solar cells with over 13% efficiency
Kohei Nishimura, Muhammad Akmal Kamarudin, Daisuke Hirotani, Qing Shen, Takashi Minemoto, Kenji Yoshino, Shuzi Hayase
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Proceedings Volume 11474, Organic, Hybrid, and Perovskite Photovoltaics XXI; 114740X (2020) https://doi.org/10.1117/12.2566181
Event: SPIE Organic Photonics + Electronics, 2020, Online Only
Abstract
Certified efficiency of halogenated Pb-perovskite solar cells has reached 25.2 %. Because of the Pb usage restriction, researches on Pb free perovskite solar cells have been focused on. Halogenated Sn-perovskite is one of candidates for the Pb-free perovskite solar cells. In spite of the similarities of the electronic properties between Pb-perovskite and Sn-perovskite, the efficiency of the Sn-perovskite solar cell was still about 10%, which is far below that of Pb-perovskite solar cells. We report Ge ion doped Sn-perovskite solar cells (Pb free) with 13% efficiency by optimizing A site cations in ASnI3 composition and surface passivation.
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Kohei Nishimura, Muhammad Akmal Kamarudin, Daisuke Hirotani, Qing Shen, Takashi Minemoto, Kenji Yoshino, and Shuzi Hayase "Pb free Sn- perovskite solar cells with over 13% efficiency", Proc. SPIE 11474, Organic, Hybrid, and Perovskite Photovoltaics XXI, 114740X (20 August 2020); https://doi.org/10.1117/12.2566181
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KEYWORDS
Solar cells
Perovskite
Lead
Tin
Crystals
Electron transport
Energy efficiency
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