Controllable and facile synthesis of CsPbBr3-Cs4PbBr6 perovskite composites in pure polar solvent

Sunqi Lou; Tongtong Xuan; Qiongyun Liang; Junjian Huang; Luyu Cao; Caiyan Yu; Mengmeng Cao; Chao Xia; Jing Wang; Dafeng Zhang; Huili Li

doi:10.1016/j.jcis.2018.11.041

Controllable and facile synthesis of CsPbBr₃-Cs₄PbBr₆ perovskite composites in pure polar solvent

J Colloid Interface Sci. 2019 Mar 1:537:384-388. doi: 10.1016/j.jcis.2018.11.041. Epub 2018 Nov 13.

Authors

Sunqi Lou¹, Tongtong Xuan², Qiongyun Liang³, Junjian Huang³, Luyu Cao³, Caiyan Yu⁴, Mengmeng Cao⁴, Chao Xia⁴, Jing Wang³, Dafeng Zhang⁵, Huili Li⁶

Affiliations

¹ Engineering Research Centre for Nanophotonics & Advanced Instrument, Ministry of Education, School of Physics and Materials Science, East China Normal University, Shanghai 200062, China; Ministry of Education Key Laboratory of Bioinorganic and Synthetic Chemistry, State Key Laboratory of Optoelectronic Materials and Technologies, School of Chemistry, School of Materials Science and Engineering, Sun Yat-Sen University, Guangzhou 510275, China.
² Ministry of Education Key Laboratory of Bioinorganic and Synthetic Chemistry, State Key Laboratory of Optoelectronic Materials and Technologies, School of Chemistry, School of Materials Science and Engineering, Sun Yat-Sen University, Guangzhou 510275, China. Electronic address: xuantt@mail.sysu.edu.cn.
³ Ministry of Education Key Laboratory of Bioinorganic and Synthetic Chemistry, State Key Laboratory of Optoelectronic Materials and Technologies, School of Chemistry, School of Materials Science and Engineering, Sun Yat-Sen University, Guangzhou 510275, China.
⁴ Engineering Research Centre for Nanophotonics & Advanced Instrument, Ministry of Education, School of Physics and Materials Science, East China Normal University, Shanghai 200062, China.
⁵ School of Materials Science and Engineering, Liaocheng University, Liaocheng, Shandong 252000, China.
⁶ Engineering Research Centre for Nanophotonics & Advanced Instrument, Ministry of Education, School of Physics and Materials Science, East China Normal University, Shanghai 200062, China. Electronic address: hlli@phy.ecnu.edu.cn.

PMID: 30458348
DOI: 10.1016/j.jcis.2018.11.041

Abstract

Here, we present a single atomic supersaturated recrystallization method to synthesize the green-emitting CsPbBr₃-Cs₄PbBr₆ perovskite composites in solid state with the highest PLQY of 40.8% in pure polar solvent. The component, morphology, and optical properties of the microcrystals can be tuned by varying growth time, the content of ammonium bromide, and bromine source. The developed method provides a new route to large-scale synthesize high quality perovskite composites emitters for light-emitting diodes.

Keywords: Luminescent; Micropetals; Morphology; Perovskite.