Shell-Free CuInS₂ Nanocrystals with Near-Unity Photoluminescence for Deep-Red LEDs.

ABSTRACT: CuInS₂ quantum dots (CIS-QDs) are promising nontoxic and air-stable materials that can be readily synthesized through a controllable heat-up reaction between metal cation precursors and a sulfur source, enabling tunable photoluminescence (PL) across the visible to near-infrared range. However, their broader application in light-emitting diodes (LEDs) is limited by inefficient radiative recombination and a photoluminescence quantum yield (PLQY) significantly below unity. To address this challenge, we introduce formamidinium acetate (FAAc) into the reactiona common additive in metal halide perovskite precursor solutions. FAAc modulates precursor chemistry by forming complexes that control the size and bandgap of the resulting nanocrystals, without significantly altering their cry

SUBMITTER: Orfanoudakis S 

PROVIDER: S-EPMC12836342 | biostudies-literature | 2026 Jan

REPOSITORIES: biostudies-literature