Chem. J. Chinese Universities ›› 2021, Vol. 42 ›› Issue (12): 3774.doi: 10.7503/cjcu20210358

• Materials Chemistry • Previous Articles    

Fast Synthesis of Highly Luminescent Two-dimensional Tin-halide Perovskites by Anti-solvent Method

LIU Yao, DENG Zhengtao()   

  1. College of Engineering and Applied Sciences,Nanjing University,Nanjing 210023,China
  • Received:2021-05-24 Online:2021-12-10 Published:2021-08-11
  • Contact: DENG Zhengtao E-mail:dengz@nju.edu.cn
  • Supported by:
    the National Natural Science Foundation of China(22075129);the Natural Science Foundation of Jiangsu Province, China(BZ2018008)

Abstract:

In recent years, lead halide perovskites have attracted extensive attention due to their remarkable optoelectronic properties. However, the toxicity of lead in materials has greatly hindered their large-scale commercial applications. Therefore, it is very important to find lead-free halide perovskite materials with similar photoelectric properties as lead halide perovskite materials. Among the lead-free halide perovskites, tin-halide perovskite is considered as one of the best substitutes for lead based perovskite materials. Herein, a series of novel two-dimensional(2D) (RNH32SnX4(R is alkyl chain, X=Br-, I-) perovskite materials was synthesized by a simple antisolvent method, which have excellent fluorescence emission properties with photoluminescence quantum yield(PLQY) up to 98%. It was found that the prepared materials are more stable than 3D ASnX3-type[A=Cs+, methylammonium(MA+), formamidinium(FA+)] ones. This work lays a foundation for the industrial application of metal halide perovskite materials in solid-state lighting devices and display devices.

Key words: 2D Tin-halide perovskite, Anti-solvent method, Highly luminescent, High stability, Light- emitting diode

CLC Number: 

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