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Issue 7, 2019
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Enhancement in the photovoltaic performance of planar perovskite solar cells by perovskite cluster engineering using an interfacial energy modifier

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Abstract

The grain size and quality of hybrid organic–inorganic perovskite (HOIP) films greatly affect the performance of perovskite solar cells (PSCs). However, dripping an anti-solvent during the spin coating process induces rapid nucleation and reduces the grain size. Here, a facile method is developed to engineer clusters in precursor solution and obtain high-quality perovskite films with an enlarged grain size. A cluster interfacial modifier, chlorobenzene (CB), is added to precursor solution. The modifier increases the interfacial energy between the precursor cluster and the solvent. The increased interfacial energy suppresses the nucleation and gives rise to HOIP films with large grains and high crystallinity. The efficiency of PSCs based on this method is greatly improved from 17.55% to 19.5%.

Graphical abstract: Enhancement in the photovoltaic performance of planar perovskite solar cells by perovskite cluster engineering using an interfacial energy modifier

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Publication details

The article was received on 15 Dec 2018, accepted on 14 Jan 2019 and first published on 15 Jan 2019


Article type: Paper
DOI: 10.1039/C8NR10125F
Citation: Nanoscale, 2019,11, 3216-3221

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    Enhancement in the photovoltaic performance of planar perovskite solar cells by perovskite cluster engineering using an interfacial energy modifier

    B. Li, Z. Chen, H. Yao, X. Guan, Z. Yu, F. Halis Isikgor, H. Coskun, Q. Xu and J. Ouyang, Nanoscale, 2019, 11, 3216
    DOI: 10.1039/C8NR10125F

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