Kong J. 1Wang F. 1Zhang C. 1Chen J. 1Li L. 1Wang C. 1Sun Y. 1Jin Y. 1Qiao F. 2Shen W. 2Dong H.1
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作者信息
1. College of Sciences Shanghai Institute of Technology
2. Key Laboratory of Artificial Structures and Quantum Control (Minister of Education) Institute of Solar Energy School of Physics and Astronomy Shanghai Jiao Tong University
折叠
Abstract
Mn and Cu co-doped perovskite nanocrystal (NCs) thin films with high Mn2+ doping concentration are successfully achieved by a simple one-pot method at room temperature. Structural and compositional analyses manifest that Cu2+ ions can partly replace the Pb2+ ions in the lattice structure and effectively reduce the defect concentration of 2 CsPb(Br/Cl)3 NCs. Steady-state and time-resolved photoluminescence (PL) spectroscopy were employed to characterize the effect of Cu ions doping on the luminescence properties of Mn-doped CsPb(Br/Cl)3 NCs. Mn2+ related PL quantum yields of Mn-doped CsPb(Br/Cl)3 NCs thin films with the Mn/Pb ratios of 7:1 was validly improved from ~34% to ~50% because of the incorporation of Cu2+ ions. Our work provides a low-cost synthesis for Mn-doped perovskite NCs thin films with high emission efficiency in the application of lighting, display and photodetector.
Key words
Co-doped perovskite NCs thin films/CuCl2-assisted synthesis/High efficiencies/One-pot process
NSTL
Elsevier