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Bandgap Control via Structural and Chemical Tuning of Transition Metal Perovskite Chalcogenides
Shanyuan Niu1, Huaixun Huyan1, Yang Liu1
1Mork Family Department of Chemical Engineering and Materials Science, University of Southern California, 925 Bloom Walk, HED 216, Los Angeles, CA, 90089, USA.
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.

