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Surface Passivation of Perovskite Solar Cells Toward Improved Efficiency and Stability.

ABSTRACT: The advancement of perovskite solar cells (PVSCs) technology toward commercialized promotion needs high efficiency and optimum stability. By introducing a small molecular material such as tetratetracontane (TTC, CH₃(CH₂)₄₂CH₃) at the fullerene (C₆₀)/perovskite interface of planar p-i-n PVSCs, we significantly reduced the interfacial traps, thereby suppressing electron recombination and facilitating electron extraction. Consequently, an improved efficiency of 20.05% was achieved with a high fill factor of 79.4%, which is one of the best performances for small molecular-modified PVSCs. Moreover, the hydrophobic TTC successfully protects the perovskite film from water damage. As a result, we realized a better long-term stability that maintains 87% of the initial efficiency after continuous exposure for 200 h in air.

SUBMITTER: Li Z

PROVIDER: S-EPMC7770653 | biostudies-literature | 2019 Jun

REPOSITORIES: biostudies-literature

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Surface Passivation of Perovskite Solar Cells Toward Improved Efficiency and Stability.

Li Zhiqi Z Dong Jiajun J Liu Chunyu C Guo Jiaxin J Shen Liang L Guo Wenbin W

Nano-micro letters 20190607 1

The advancement of perovskite solar cells (PVSCs) technology toward commercialized promotion needs high efficiency and optimum stability. By introducing a small molecular material such as tetratetracontane (TTC, CH3(CH2)42CH3) at the fullerene (C60)/perovskite interface of planar p-i-n PVSCs, we significantly reduced the interfacial traps, thereby suppressing electron recombination and facilitating electron extraction. Consequently, an impro ...[more]

PMID: 34138026

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