卤化物
碱金属
纳米晶
材料科学
发光
介孔材料
钙钛矿(结构)
溶剂
化学工程
沸石
结晶
无机化学
量子产额
金属
纳米技术
化学
有机化学
催化作用
荧光
光电子学
冶金
工程类
物理
量子力学
作者
Peijun Wang,Bolun Wang,Nan Li,Ting He,Hao Zhang,Lu Zhang,Shengzhong Liu
标识
DOI:10.1002/advs.202305880
摘要
Inorganic metal halide perovskite CsPbX3 (X = I, Br, and Cl) nanocrystals (NCs) are rapidly developed due to their excellent photophysical properties and potential applications in lighting, lasers, and scintillators. However, the materials for growing perovskite NCs are insoluble or hydrolyzed in most green solvents, limiting their further development. Based on rational chemical analysis, an alkali-metal-assisted green-solvent synthesis method for in situ growth of CsPbBr3 NCs within SAPO-34 zeolite with bright luminescence is developed. Water is the only solvent used in the whole process. Surprisingly, by the synergistic effect of the channel structure of SAPO-34 and alkali-metal ions crystallization regulation, the CsPbBr3 NCs embedded in SAPO-34 assisted by Na+ emit bright blue light under ultraviolet illumination, with a 30 nm blue shift comparing to the CsPbBr3 NCs assisted by K+. Moreover, CsPbBr3 NCs can also be grown in mesoporous SiO2 SBA-15 and zeolites including ZSM-5, AlPO-5, and SOD, indicating that the method is universal for in situ growth of luminescent perovskite NCs in porous materials. This alkali-metal-assisted green-solvent synthesis provides a new strategy for developing high-quantum-yield, tunable-emission, and stable perovskite luminescent materials.
科研通智能强力驱动
Strongly Powered by AbleSci AI