Li@C60 endohedral fullerene as a supraatomic dopant for C60 electron-transporting layers promoting the efficiency of perovskite solar cells

Hiroshi Ueno; Il Jeon; Hao-sheng Lin; Abhishek Thote; Takafumi Nakagawa; Hiroshi Okada; Seiichiro Izawa; Masahiro Hiramoto; Hirofumi Daiguji; Shigeo Maruyama; Yutaka Matsuo

doi:10.1039/C9CC06120G

Li@C₆₀ endohedral fullerene as a supraatomic dopant for C₆₀ electron-transporting layers promoting the efficiency of perovskite solar cells†

Hiroshi Ueno,

‡^ab Il Jeon,

‡^c Hao-sheng Lin,

^c Abhishek Thote,^c Takafumi Nakagawa,

^c Hiroshi Okada,

^c Seiichiro Izawa,

^de Masahiro Hiramoto,

^de Hirofumi Daiguji,

^c Shigeo Maruyama

^cf and Yutaka Matsuo

*^acg

Author affiliations

* Corresponding authors

^a School of Chemistry, Northeast Normal University, Changchun, Jilin 130024, P. R. China

^b Creative Interdisciplinary Research Division, The Frontier Research Institute for Interdisciplinary Sciences (FRIS), Tohoku University, Sendai 980-8578, Japan

^c Department of Mechanical Engineering, School of Engineering, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-8656, Japan

^d Division of Molecular Nanoscience, Research Center for Molecular Scale Nanoscience, Institute for Molecular Science, Okazaki, Aichi 444-8787, Japan

^e SOKENDAI (The Graduate University for Advanced Studies), Okazaki, Aichi 444-8787, Japan

^f Energy Nano Engineering Lab., National Institute of Advanced Industrial Science and Technology (AIST), 1-2-1 Namiki, Tsukuba, 305-8564, Japan

^g Institute of Materials Innovation, Institutes of Innovation for Future Society, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan

Abstract

C₆₀:Li@C₆₀ hybrid n-type semiconducting films were first fabricated. The Fermi level of 1% Li@C₆₀-added C₆₀ films was determined to be −4.52 eV, which was 0.12 eV higher than that of pristine C₆₀ films. A fraction of Li@C₆₀ is distributed uniformly within the C₆₀ film. Its application in PSCs was demonstrated, in which the addition of Li@C₆₀ into a C₆₀ film improved the device performance.

Chemical Communications

Li@C₆₀ endohedral fullerene as a supraatomic dopant for C₆₀ electron-transporting layers promoting the efficiency of perovskite solar cells†

Abstract

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Li@C₆₀ endohedral fullerene as a supraatomic dopant for C₆₀ electron-transporting layers promoting the efficiency of perovskite solar cells

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