Light-activated photocurrent degradation and self-healing in perovskite solar cells

Wanyi Nie, Jean Christophe Blancon, Amanda J. Neukirch, Kannatassen Appavoo, Hsinhan Tsai, Manish Chhowalla, Muhammad A. Alam, Matthew Y. Sfeir, Claudine Katan, Jacky Even, Sergei Tretiak, Jared J. Crochet, Gautam Gupta, Aditya D. Mohite

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254 Citations (Scopus)

Abstract

Solution-processed organometallic perovskite solar cells have emerged as one of the most promising thin-film photovoltaic technology. However, a key challenge is their lack of stability over prolonged solar irradiation. Few studies have investigated the effect of light soaking on hybrid perovskites and have attributed the degradation in the optoelectronic properties to photochemical or field-assisted ion migration. Here we show that the slow photocurrent degradation in thin-film photovoltaic devices is due to the formation of light-activated meta-stable deep-level trap states. However, the devices can self-heal completely by resting them in the dark for

Original languageEnglish
Article number11574
JournalNature Communications
Volume7
DOIs
Publication statusPublished - May 16 2016

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ASJC Scopus subject areas

  • Biochemistry, Genetics and Molecular Biology(all)
  • Chemistry(all)
  • Physics and Astronomy(all)

Cite this

Nie, W., Blancon, J. C., Neukirch, A. J., Appavoo, K., Tsai, H., Chhowalla, M., ... Mohite, A. D. (2016). Light-activated photocurrent degradation and self-healing in perovskite solar cells. Nature Communications, 7, [11574]. https://doi.org/10.1038/ncomms11574