Sustainable fabrication of ultralong Pb(OH)Br nanowires and their conversion to luminescent CH3NH3PbBr3 nanowires

Weijian Wang; Yangchun Yu; Sanam Attique; Jiahui Hou; Fangying Jun; Yiquan Xie; Lebao Mao; Xiaoqing Yu; Xiuhua Zhang; Shengfu Wang; Chongchong Wu; Bingqiang Cao; Shikuan Yang

doi:10.1039/D1GC02073K

Sustainable fabrication of ultralong Pb(OH)Br nanowires and their conversion to luminescent CH₃NH₃PbBr₃ nanowires†

Weijian Wang,‡^ab Yangchun Yu,‡^b Sanam Attique,‡^b Jiahui Hou,^b Fangying Jun,^c Yiquan Xie,^a Lebao Mao,

^d Xiaoqing Yu,^e Xiuhua Zhang,

^d Shengfu Wang,

^d Chongchong Wu,^f Bingqiang Cao*^c and Shikuan Yang

*^b

Author affiliations

* Corresponding authors

^a Key Lab of Applied Chemistry of Zhejiang Province, Department of Chemistry, Zhejiang University, Hangzhou, China

^b Institute for Composites Science Innovation, School of Materials Science and Engineering, Zhejiang University, Hangzhou, China
E-mail: shkyang@zju.edu.cn

^c School of Physics and Physical Engineering, Qufu Normal University, Qufu, China
E-mail: caobq@qfnu.edu.cn

^d Ministry of Education Key Laboratory for the Synthesis and Application of Organic Functional Molecules, Collaborative Innovation Center for Advanced Organic Chemical Materials Co-constructed by the Province and Ministry, College of Chemistry and Chemical Engineering, Hubei University, Wuhan, China

^e College of Materials Science and Engineering, Hunan University, Changsha, China

^f Department of Chemical and Petroleum Engineering, University of Calgary, Alberta, Canada

Abstract

The fabrication of lead halide perovskites involves different types of organic solvents, which are not only harmful to the environment but also expensive. Herein, we present an ultimately green process to prepare CH₃NH₃PbBr₃ (MAPbBr₃) nanowires without using any organic solvents, acids, and alkalis. According to the formula of Pb(OH)Br, only PbBr₂ and water are used to synthesize Pb(OH)Br. Subsequently, the Pb(OH)Br nanowires are converted into MAPbBr₃ nanowires via a thermal evaporation technique (i.e., exposing Pb(OH)Br nanowires to MABr vapor). The prepared MAPbBr₃ nanowires show comparable optical properties to those prepared using organic solvents. Such an ultimately green fabrication method can alleviate the environmental concerns and reduce the cost of perovskite commercialization.

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Sustainable fabrication of ultralong Pb(OH)Br nanowires and their conversion to luminescent CH₃NH₃PbBr₃ nanowires†

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Sustainable fabrication of ultralong Pb(OH)Br nanowires and their conversion to luminescent CH₃NH₃PbBr₃ nanowires

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