Structural, optical, and electronic studies of wide-bandgap lead halide perovskites

Riccardo Comin, Grant Walters, Emmanuel Sol Thibau, Oleksandr Voznyy, Zheng-Hong Lu, Edward H. Sargent

Research output: Contribution to journalArticlepeer-review

106 Scopus citations

Abstract

© The Royal Society of Chemistry 2015. We investigate the family of mixed Br/Cl organolead halide perovskites which enable light emission in the blue-violet region of the visible spectrum. We report the structural, optical and electronic properties of this air-stable family of perovskites, demonstrating full bandgap tunability in the 400-550 nm range and enhanced exciton strength upon Cl substitution. We complement this study by tracking the evolution of the band levels across the gap, thereby providing a foundational framework for future optoelectronic applications of these materials.
Original languageEnglish (US)
Pages (from-to)8839-8843
Number of pages5
JournalJ. Mater. Chem. C
Volume3
Issue number34
DOIs
StatePublished - 2015
Externally publishedYes

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