Hydrazinium-assisted stabilisation of methylammonium tin iodide for lead-free perovskite solar cells

Sergey Tsarev, Aleksandra G. Boldyreva, Sergey Yu Luchkin, Moneim Elshobaki, Mikhail I. Afanasov, Keith J. Stevenson, Pavel A. Troshin

Research output: Contribution to journalArticlepeer-review

46 Citations (Scopus)

Abstract

Here we explore the effect of the partial substitution of univalent methylammonium (MA) cations with hydrazinium (HA) ions on the stability, morphology and photovoltaic performance of hybrid MA(1−x)HAxSnI3 systems. The hydrazinium-loaded films have shown much superior stability with respect to light exposure under an inert atmosphere as compared to the reference MASnI3 films, which undergo rapid conversion to MA2SnI6 under these conditions. Furthermore, the incorporation of hydrazinium ions dramatically improved the photovoltaic performance of the materials yielding a maximum efficiency of 2.6% in inverted planar junction perovskite solar cells using the optimal HA0.2MA0.8SnI3 composition.

Original languageEnglish
Pages (from-to)21389-21395
Number of pages7
JournalJournal of Materials Chemistry A
Volume6
Issue number43
DOIs
Publication statusPublished - 2018

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