Lead-free silver-antimony halide double perovskite quantum dots with superior blue photoluminescence
Kexin Lv1, Shaopeng Qi, Guoning Liu
1School of Chemistry and Chemical Engineering, Jiangsu Key Laboratory for Science and Application of Molecular Ferroelectrics, Jiangsu Engineering Laboratory of Smart Carbon-Rich Materials and Device, Southeast University, Nanjing, 211189, China. lou@seu.edu.cn chenjinxi@seu.edu.cn.
Abstract:
Novel all-inorganic Sb-based lead-free double perovskite Cs2AgSbX6 (X = Cl, Br or I) quantum dots exhibiting excellent air stability and strong blue emission with photoluminescence quantum yields of 31.33% were synthesized for the first time using a surfactant-assisted method. The ligand, oleic acid, could control the crystallization of the pure perovskite phase and significantly passivate the surface.
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