An open-cage bis[60]fulleroid as an electron transport material for tin halide perovskite solar cells

Wentao Liu; Guanglin Huang; Chien-Yu Chen; Tiancheng Tan; Harata Fuyuki; Shuaifeng Hu; Tomoya Nakamura; Minh Anh Truong; Richard Murdey; Yoshifumi Hashikawa; Yasujiro Murata; Atsushi Wakamiya

doi:10.1039/D3CC05843C

An open-cage bis[60]fulleroid as an electron transport material for tin halide perovskite solar cells†

Wentao Liu,

‡^a Guanglin Huang,

‡^a Chien-Yu Chen,‡^a Tiancheng Tan,^a Harata Fuyuki,^a Shuaifeng Hu,

^a Tomoya Nakamura,^a Minh Anh Truong,

^a Richard Murdey,

^a Yoshifumi Hashikawa,

^a Yasujiro Murata

*^a and Atsushi Wakamiya

*^a

Author affiliations

* Corresponding authors

^a Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan
E-mail: yasujiro@scl.kyoto-u.ac.jp, wakamiya@scl.kyoto-u.ac.jp

Abstract

An open-cage bis[60]fulleroid (OC) was applied as an electron transport material (ETM) in tin (Sn) halide perovskite solar cells (PSCs). Due to the reduced offset between the energy levels of Sn-based perovskites and ETMs, the power conversion efficiency (PCE) of Sn-based PSCs with OC reached 9.6% with an open-circuit voltage (V_OC) of 0.72 V. Additionally, OC exhibited superior thermal stability and provided 75% of the material without decomposition after vacuum deposition. The PSC using vacuum-deposited OC as the ETM could afford a PCE of 7.6%, which is a big leap forward compared with previous results using vacuum-deposited fullerene derivatives as ETMs.

Chemical Communications

An open-cage bis[60]fulleroid as an electron transport material for tin halide perovskite solar cells†

Abstract

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An open-cage bis[60]fulleroid as an electron transport material for tin halide perovskite solar cells

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