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Issue 10, 2019
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A new polytriarylamine derivative for dopant-free high-efficiency perovskite solar cells

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Abstract

The development of dopant-free organic charge transport layers is crucial for achieving long-term stability of perovskite solar cells. In this paper, we present a new polytriarylamine derivative, poly[bis(4-phenyl)(4-methylphenyl)amine] (PTA), which showed significantly improved photovoltaic performance compared to dopant-free PTAA. Perovskite solar cells based on the PTA/MoO3 hybrid hole-transport layer (HTL) and MAPbI3 absorber delivered a competitive 17.0% efficiency, which is currently the highest value achieved for n–i–p perovskite solar cells using dopant-free polytriarylamine-type HTLs. The enhanced device performance was attributed to a better HOMO alignment of PTA (5.38 eV) vs. PTAA (5.27 eV) with respect to the perovskite valence band.

Graphical abstract: A new polytriarylamine derivative for dopant-free high-efficiency perovskite solar cells

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Article information


Submitted
05 Jul 2019
Accepted
17 Jul 2019
First published
22 Jul 2019

Sustainable Energy Fuels, 2019,3, 2627-2632
Article type
Paper

A new polytriarylamine derivative for dopant-free high-efficiency perovskite solar cells

S. Tsarev, I. K. Yakushchenko, S. Y. Luchkin, P. M. Kuznetsov, R. S. Timerbulatov, N. N. Dremova, L. A. Frolova, Keith. J. Stevenson and P. A. Troshin, Sustainable Energy Fuels, 2019, 3, 2627
DOI: 10.1039/C9SE00448C

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