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Facile fabrication of highly efficient ETL-free perovskite solar cells with 20% efficiency by defect passivation and interface engineering

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Abstract

Tetramethylammonium hydroxide (TMAH) is employed to modify the surface and electrical properties of fluorine-doped tin oxide (FTO) electrodes in perovskite solar cells. Synchronously, owing to the flow of unbound TMA+ ions into the perovskite, the trap density of the perovskite overlayer is largely reduced. Conductivity of the grain boundaries in the perovskite layer is also greatly increased. A high efficiency of 20.1% along with a reduced JV hysteresis in our champion perovskite solar cells without electron transport layers is achieved.

Graphical abstract: Facile fabrication of highly efficient ETL-free perovskite solar cells with 20% efficiency by defect passivation and interface engineering

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Publication details

The article was received on 14 Jan 2019, accepted on 05 Feb 2019 and first published on 06 Feb 2019


Article type: Communication
DOI: 10.1039/C9CC00312F
Citation: Chem. Commun., 2019, Advance Article

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    Facile fabrication of highly efficient ETL-free perovskite solar cells with 20% efficiency by defect passivation and interface engineering

    C. Huang, P. Lin, N. Fu, C. Liu, B. Xu, K. Sun, D. Wang, X. Zeng and S. Ke, Chem. Commun., 2019, Advance Article , DOI: 10.1039/C9CC00312F

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