High-Efficiency Perovskite Solar Cells Employing a S,N-Heteropentacene-based D-A Hole-Transport Material

ChemSusChem
Dongqin BiAnders Hagfeldt

Abstract

We developed a new donor-π-acceptor-type hole-transport material (HTMs) incorporating S,N-heteropentacene as π-spacer, triarylamine as donor, and dicyanovinylene as acceptor. In addition to appropriate frontier molecular orbital energies, the new HTM showed high photo absorptivity in the visible region. Without the use of p-dopants, solution-processed mixed perovskite devices using the HTM achieved power conversion efficiencies of up to 16.9% and high photocurrents of up to 22.2 mA cm(-2). These results demonstrate that heteroacene can be an excellent building block to prepare alternative HTMs for perovskite solar cells and hold promise for further advancement through fine-tuning the molecular structure.

References

Apr 16, 2009·Journal of the American Chemical Society·Akihiro KojimaTsutomu Miyasaka
Dec 24, 2013·Journal of the American Chemical Society·Qi ChenYang Yang
May 20, 2014·Journal of the American Chemical Society·Nam Joong JeonSang Il Seok
May 29, 2014·Journal of the American Chemical Society·Peng QinMohammad Khaja Nazeeruddin
Aug 6, 2014·Chemical Communications : Chem Comm·Kwangseok DoJaejung Ko
Feb 11, 2015·Angewandte Chemie·Samuel D StranksHenry J Snaith

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Citations

Mar 24, 2017·Angewandte Chemie·Sebastian BoldtPeter Langer
Jul 18, 2017·Advanced Materials·Sanghyun PaekMohammad Khaja Nazeeruddin
Oct 5, 2018·Chemical Society Reviews·Javier Urieta-MoraNazario Martín
Jun 5, 2020·Chemical Society Reviews·Maria VasilopoulouMohammad Khaja Nazeeruddin
Dec 1, 2017·ACS Applied Materials & Interfaces·Neha AroraMichael Grätzel

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