Bandgap Control via Structural and Chemical Tuning of Transition Metal Perovskite Chalcogenides

Shanyuan Niu; Huaixun Huyan; Yang Liu; Matthew Yeung; Kevin Ye; Louis Blankemeier; Thomas Orvis; Debarghya Sarkar; David J Singh; Rehan Kapadia; Jayakanth Ravichandran

doi:10.1002/adma.201604733

Bandgap Control via Structural and Chemical Tuning of Transition Metal Perovskite Chalcogenides

Adv Mater. 2017 Mar;29(9). doi: 10.1002/adma.201604733. Epub 2016 Dec 22.

Authors

Affiliations

¹ Mork Family Department of Chemical Engineering and Materials Science, University of Southern California, 925 Bloom Walk, HED 216, Los Angeles, CA, 90089, USA.
² Ming Hsieh Department of Electrical Engineering, University of Southern California, 3740 McClintock Avenue, EEB 102, Los Angeles, CA, 90089, USA.
³ Department of Physics and Astronomy, University of Missouri, Columbia, MO, 65211-7010, USA.

PMID: 28004864
DOI: 10.1002/adma.201604733

Abstract

Transition metal perovskite chalcogenides are a new class of versatile semiconductors with high absorption coefficient and luminescence efficiency. Polycrystalline materials synthesized by an iodine-catalyzed solid-state reaction show distinctive optical colors and tunable bandgaps across the visible range in photoluminescence, with one of the materials' external efficiency approaching the level of single-crystal InP and CdSe.

Keywords: bandgap tunability; high absorption coefficients; quantitative photoluminescence; semiconductors; transition metal perovskite chalcogenides.