Potassium Iodide Doping for Vacancy Substitution and Dangling Bond Repair in InP Core-Shell Quantum Dots.

ABSTRACT: This work highlights the novel approach of incorporating potassium iodide (KI) doping during the synthesis of In_0.53P_0.47 core quantum dots (QDs) to significantly reduce the concentration of vacancies (i.e., In vacancies; V_In^-) within the bulk of the core QD and inhibit the formation of InPO_x at the core QD-Zn_0.6Se_0.4 shell interfaces. The photoluminescence quantum yield (PLQY) of ~97% and full width at half maximum (FWHM) of ~40 nm were achieved for In_0.53P_0.47/Zn_0.6Se_0.4/Zn_0.6Se_0.1S_0.3/Zn_0.5S_0.5 core/multi-shell QDs emitting red light, which is essential for a quantum-dot organic light-emitting diode (QD-OLE

SUBMITTER: Lee JE 

PROVIDER: S-EPMC11206699 | biostudies-literature | 2024 Jun

REPOSITORIES: biostudies-literature