Journal
INORGANIC CHEMISTRY
Volume 59, Issue 2, Pages 1234-1241Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.inorgchem.9b02947
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Funding
- National Natural Science Foundation of China [51972096, 51772075, 51572068]
- Natural Science Foundation of Hebei Province [E2019202086, E2019202347]
- Innovation Fund for Excellent Graduate Student of Hebei Province [CXZZBS2019038]
- Program for Changjiang Scholars and Innovative Research Team in University [PCSIRT: IRT17R33]
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All-inorganic CsPbX3 (X = Cl, Br, I) perovskite quantum dots (QDs) have great potential for various applications due to their excellent photoluminescence properties. However, poor stability under long-term storage hinders their applications. Herein we report the utilization of porous boron nitride nanofibers (BNNFs) as a promising carrier for anchoring of CsPbBr3 QDs. Due to the good dispersion and immobilization of CsPbBr3 QDs, the resulting CsPbBr3/BNNF composites show excellent photostability and superior long-term storage stability in an air environment. Moreover, the CsPbBr3/BNNF composites exhibit an interesting ammonia-responsive behavior: i.e., a distinct decrease in photoluminescence intensity upon exposure to ammonia gas and the subsequent photoluminescence recovery after post-treatment in nitrogen gas. Even after treatment with ammonia gas for 3 h, the composites can still be recovered under nitrogen gas treatment. The fast response, reversibility, and stability of CsPbBr3/BNNF composites in the presence of ammonia gas could inspire a broader range of applications.
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