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Issue 5, 2018
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Surface modification of a hole transporting layer for an efficient perovskite solar cell with an enhanced fill factor and stability

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Abstract

The improvement of the quality of the hole transporting layer (HTL) plays a key role in the fabrication of highly efficient and stable perovskite solar cells (PSCs). Here, we used rubrene as a surface treatment agent on top of a spiro HTL. We found that rubrene can cover the pinholes of the spiro layer and provide an excellent contact layer for planar PSCs. Based on this modification, mobile gold ions from the metal electrode are prevented from diffusing through the HTL hindering the degradation of PSCs. The optimized device shows a maximum power conversion efficiency (PCE) of 19.87% and a 79% fill factor (FF), which are higher than the 17.98% PCE and 72% FF of the reference device. In addition, the device after modification demonstrates better stability after 100 h under continuous light illumination retaining 97% of its initial performance compared with 65% of the reference device.

Graphical abstract: Surface modification of a hole transporting layer for an efficient perovskite solar cell with an enhanced fill factor and stability

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Publication details

The article was received on 18 Jun 2018, accepted on 16 Jul 2018 and first published on 17 Jul 2018


Article type: Communication
DOI: 10.1039/C8ME00036K
Citation: Mol. Syst. Des. Eng., 2018,3, 717-722

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    Surface modification of a hole transporting layer for an efficient perovskite solar cell with an enhanced fill factor and stability

    M. M. Tavakoli, R. Tavakoli, D. Prochowicz, P. Yadav and M. Saliba, Mol. Syst. Des. Eng., 2018, 3, 717
    DOI: 10.1039/C8ME00036K

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