Room-Temperature Persistent Luminescence in Metal Halide Perovskite Nanocrystals for Solar-Driven CO_(2)Bioreduction  

作　　者：Jie Wang Na Chen Wenjie Wang Zhiheng Li Bolong Huang Yanbing Yang Quan Yuan 

机构地区：[1]College of Chemistry and Molecular Sciences,School of Microelectronics,Wuhan University,Wuhan 430072 [2]Molecular Science and Biomedicine Laboratory(MBL),Institute of Chemical Biology and Nanomedicine,State Key Laboratory of Chemo/Biosensing and Chemometrics,College of Chemistry and Chemical Engineering,Hunan University,Changsha 410082 [3]Department of Applied Biology and Chemical Technology,The Hong Kong Polytechnic University,Hung Hom,Kowloon,Hong Kong SAR 999077

出　　处：《CCS Chemistry》2023年第1期164-175,共12页中国化学会会刊（英文）

基　　金：This work was supported by the National Natural Science Foundation of China(nos.21925401 and 21904100);the National Key R&D Program of China(no.2017YFA0208000).Q.Y.and Y.Y.thank the large-scale instrument and equipment-sharing foundation of Wuhan University。

摘　　要：The rapid crystal growth of metal halide perovskite(MHP)nanocrystals inevitably leads to the generation of abundant crystal defects in the lattice.Here,defects-mediated long-lived charges and accompanying room-temperature persistent luminescence are demonstrated to be a general phenomenon in MHP nanocrystals.Density functional theory calculations suggest that the collaboration of Schottky and point defects enables upward cascading depletion for electron transfer in MHP nanocrystals,leading to the generation of long-lived photoexcited charges with lifetimes over 30 min.The excellent optical properties including the presence of long-lived charges,high charge separation efficiency,and broad absorption in the visible region make MHPs ideal candidates for both photocatalysis and photobiocatalysis.The MHPs were further integrated with enzymes to construct a light-driven biosynthetic system for the selective production of fine chemicals from CO_(2)with solar energy.The biosynthetic system can produce formate with a quantum yield of 3.24%,much higher than that of plants(∼0.2-1.6%).These findings will benefit the understanding of the optoelectronic properties of MHPs and further provide opportunities for the development of biosynthetic systems for solar-to-chemical synthesis.

关 键 词：persistent luminescence nanoparticles metal halide perovskites DEFECTS CO_(2)reduction 

分 类 号：O76[理学—晶体学]