An efficient route to assemble novel organometal halide perovskites and emission evolution performance

作者：Qiao, Gongxi; Zeng, Zhi^*; Gao, Jinwei; Tang, Yiping; Wang, Qianming^*

来源：Journal of Alloys and Compounds, 2019, 771: 418-423.

DOI：10.1016/j.jallcom.2018.08.322

• Luminescence
• Perovskite
• Quantum dots
• Structure

Hybrid organic-inorganic perovskites are a new class of photoluminescent and low-cost nanomaterials. Chemical transformation using less-toxic elements under ambient reaction conditions has emerged as a major issue due to pressures on environment and human health. Herein, the synthesis of copper-incorporated CH3NH3Pb1-xCuxBr3 based on a ligand-assisted reprecipitation (LARP) technique has been reported. The achieved quantum dots have an average size of 8 nm and the existence of copper has been verified by morphological studies. The nanoscale particles exhibited strong blue luminescence upon the excitation at 370 nm. The replacement by Cu2+ resulted in emission evolution from 468 to 513 nm and the photophysical properties were discussed. This study will open a new approach to control the fluorescence of perovskite-type quantum dots, which will extend its application in different areas.

• 出版日期2019-1-15
• 单位浙江工业大学