Simple Synthesis of CuInS₂/ZnS Core/Shell Quantum Dots for White Light-Emitting Diodes.

ABSTRACT: In this study, the CuInS₂/ZnS core/shell quantum dots (QDs) were prepared via simple and environmentally friendly solvothermal synthesis and were used as phosphors for white light-emitting diodes (WLEDs). The surface defect of the CuInS₂ core QDs were passivated by the ZnS shell by forming CuInS₂/ZnS core/shell QDs. By adjusting the Cu/In ratio and the nucleation temperature, the photoluminescence (PL) peak of the CuInS₂ QDs was tunable in a range of 651-775 nm. After coating the ZnS layer and modifying oleic acid ligands, the PL quantum yield increased to 85.06%. The CuInS₂/ZnS QD powder thermal stability results showed that the PL intensity of the QDs remained 91% at 100°C for 10 min. High color rendering index values (CRI, 90) and c

SUBMITTER: Li H 

PROVIDER: S-EPMC7477729 | biostudies-literature | 2020

REPOSITORIES: biostudies-literature