Blue-band emission in LiInS2 crystals

Abstract
A new material, LiInS2 (β‐NaFeO2 type: wurtzitelike structure), for blue‐light emission is proposed. A deep blue‐band emission is observed by photoluminescence measurements at 77 K. The peak value is 453 nm for colorless as‐grown crystals. From the annealing studies in a sulfur atmosphere, sulfur vacancies are responsible for the blue‐band emission.

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