Progress and opportunities for Cs incorporated perovskite photovoltaics

Shi Tang, Shujuan Huang, Gregory J. Wilson, Anita Ho-Baillie*

*Corresponding author for this work

Research output: Contribution to journalReview articlepeer-review

9 Citations (Scopus)


Efficiencies of perovskite solar cells (PSCs) have risen unprecedentedly from 3.8% to 25.2% in just over a decade as the light absorber material has evolved from the original methylammonium (MA)- to formamidinium (FA)-dominated perovskite. While FA lead iodide (FAPbI3) has a lower bandgap and, therefore, a higher theoretical efficiency limit, it is less phase stable, although this can overcome by incorporating cesium (Cs), MA, bromide (Br), or a combination of these. Cs being a nonvolatile component remains in the perovskite film and therefore it is important to understand the effect of the amount of Cs on film properties and associated PSC performance and stability. Future research opportunities for Cs-containing PSCs including large-area demonstrations are also discussed in this review.

Original languageEnglish
Pages (from-to)638-653
Number of pages16
JournalTrends in Chemistry
Issue number7
Publication statusPublished - Jul 2020

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