Probing thermal stability in CsPbI 3 quantum dots with coupled Pb-site doping and halide passivation

Key Points

• The study aims to investigate how coupled Pb-site doping and halide passivation affect the thermal stability of CsPbI3 quantum dots.
• Analyzed the effects of Pb-site substitution in CsPbI3 quantum dots.
• Evaluated the impact of halide surface passivation.
• Measured photoluminescence quenching at varying temperatures.
• Increased lattice rigidity observed with Pb-site doping.
• Thermally activated nonradiative pathways suppressed significantly.
• Photoluminescence quenching occurs at higher temperatures than in untreated quantum dots.