Ultrahigh-quality large single crystal preparation using the modified seed crystal-induced crystallization method with precision-controlled temperature gradient

作者：Ren, Yandong; Hua, Jianbo; Han, Zhongxu; Sun, Mengsi; Xuan, Zhen; Lu, Shuchen

来源：Materials Letters, 2023, 330: 133235.

DOI：10.1016/j.matlet.2022.133235

• Seed crystal
• Epitaxial growth
• Crystal growth
• Raman

Inorganic perovskites, particularly Cs4PbBr6, possess great potential applications for radiation detection, pho-tonic and optoelectronic devices due to their peculiar yet robust photoluminescence properties and spectral color purity. Herein, a facile and industrial route to synthesize centimeter-size (1.2 x 1.1 x 0.8 cm3) Cs4PbBr6 single crystals was developed by modified seed crystal induced the precision-controlled temperature-gradient crystal-lization method. The effects of the temperature and supersaturation on growth, nucleation kinetics of large Cs4PbBr6 single crystals have been investigated. Our findings will provide a new strategy for the fabrication of large perovskite-related single crystals and could further strengthen their competitiveness for the field of lighting or display.

• 单位
  哈尔滨工程大学