Journal
NANOMATERIALS
Volume 13, Issue 10, Pages -Publisher
MDPI
DOI: 10.3390/nano13101655
Keywords
mixed-halide perovskite quantum dots; phase separation; metal organic framework
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This study successfully improves the stability of mixed-halide perovskites by synthesizing PeQDs combined with zinc-based metal organic framework crystals, including photo-, thermal, and long-term stabilities under illumination, enhancing the performance of optoelectronic devices.
Mixed-halide perovskite quantum dots (PeQDs) are the most competitive candidates in designing solar cells and light-emitting devices (LEDs) due to their tunable bandgap and high-efficiency quantum yield. However, phase separation in mixed-halide perovskites under illumination can form rich iodine and bromine regions, which change its optical responses. Herein, we synthesize PeQDs combined with mesoporous zinc-based metal organic framework (MOF) crystals, which can greatly improve the stability of anti-anion exchange, including photo-, thermal, and long-term stabilities under illumination. This unique structure provides a solution for improving the performance of perovskite optoelectronic devices and stabilizing mixed-halide perovskite devices.
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