期刊
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
卷 59, 期 51, 页码 23100-23106出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.202011203
关键词
encapsulation; passivation; photoluminescence; stability; zeolites
资金
- National Natural Science Foundation of China [21671075, 21621001, 61604092, 61974085, 91733301, 51933010]
- 111 Project [B17020, B14041]
- Strategic Priority Research Program of Chinese Academy of Sciences [XDA17040506]
- National 1000 Talents Plan program [1110010341]
Metal halide perovskites have been widely applied in optoelectronic fields, but their poor stability hinders their actual applications. A perovskite-zeolite composite was synthesized via in situ growth in air from aluminophosphate AlPO-5 zeolite crystals and perovskite nanocrystals. The zeolite matrix provides quantum confinement for perovskite nanocrystals, achieving efficient green emission, and it passivates the defects of perovskite by H-bonding interaction, which leads to a longer lifetime compared to bulk perovskite film. Furthermore, the AlPO-5 zeolite also acts as a protection shield and enables ultrahigh stability of perovskite nanocrystals under 150 degrees C heat stress, under a 15-month long-term ambient exposure, and even in water for more than 2 weeks, respectively. The strategy of in situ passivation and encapsulation for the perovskite@AlPO-5 composite was amenable to a range of perovskites, from MA- to Cs-based perovskites. Benefiting from high stability and photoluminescence performance, the composite exhibits great potential to be virtually applied in light-emitting diodes (LEDs) and backlight displays.
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