Air-stable CsPb1−xBixBr3 (0 ≤ x ≪ 1) perovskite crystals: optoelectronic and photostriction properties. Issue 20 (12th May 2017)

• Record Type: Journal Article
• Authors: Miao, Xiaoliang; Qiu, Ting; Zhang, Shufang; Ma, He; Hu, Yanqiang; Bai, Fan; Wu, Zhuangchun
• Is Part Of: Journal of materials chemistry. Volume 5:Issue 20(2017)
• Page Start: 4931
• Page End: 4939
• Publication Date: 2017-05-12
• Subjects: Materials -- Periodicals; Chemistry, Analytic -- Periodicals; Optical materials -- Research -- Periodicals; Electronics -- Materials -- Research -- Periodicals; 543.0284
• DOI: 10.1039/c7tc00417f
• Languages: English
• ISSNs: 2050-7526

Abstract

Abstract : Heterovalent Bi-doped CsPb1− x Bi x Br3 perovskites greatly improve the light absorption and photostriction of CsPbBr3 crystals. Abstract : The growth of single crystals allows a more accurate and reliable study of the intrinsic electrical and optical properties of halide perovskite materials. However, all-inorganic halide perovskite single crystals are difficult to prepare due to the poor solubility of the reactant precursors. In this paper, we report a series of air-stable Cs-based halide perovskite single crystals, CsPbBr3 and CsPb1− x Bi x Br3 ( x ≪ 1), prepared via a modified antisolvent vapour-assisted crystallization method. The Cs-based halide perovskites exhibited low trap density and high carrier mobility that are comparable to those of organic–inorganic hybrid halide perovskite materials. Most importantly, the Bi-doped CsPb1− x Bi x Br3 perovskites also indicated excellent light absorption (covering the entire visible wavelength) and photostriction (effective photostriction of about 8 × 10 −4 ) performances, which greatly expands the optoelectronic and optomechanical applications of these inorganic halide perovskite materials.