Song Zhexin, Yu Binyin, Wei Jing, Li Chunlong, Liu Guokui, Dang Yangyang
Shandong Provincial Key Laboratory of Laser Polarization and Information Technology, School of Physics and Physical Engineering, Qufu Normal University, No. 57, Jingxuan West Road, Qufu 273165, P. R. China.
Beijing Key Laboratory of Construction-Tailorable Advanced Functional Materials and Green Applications, Experimental Center of Advanced Materials School of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, P. R. China.
Inorg Chem. 2022 May 9;61(18):6943-6952. doi: 10.1021/acs.inorgchem.2c00313. Epub 2022 Apr 29.
Lead (Pb)-free halide hybrid materials have received a great deal of attention because of their potential in optoelectronic applications. However, heteroatom-based amine lead-free tin halide hybrid single crystals have not been well investigated yet. Detailed synthetic processes, growth, crystal structures, and stability of (ACHCHNH)SnBr (A = OH or SH) and (BCHCHNH)SnI (B = I or SH) single crystals were investigated. Interestingly, (IHNCHCHSSCHCHNH)HPO exhibited orange-red photoluminescence (PL) at about 620 nm with an average PL lifetime of about 912 ns. (HSCHCHNH)SnI single crystals exhibited a PL peak at 620 nm with an average PL lifetime of about 0.607 ns. More importantly, (HSCHCHNH)SnI single crystals exhibited reversible red-black color transformations when exposed to a HPO solution and an ambient atmosphere, which was attributed to oxidation from Sn to Sn, rather than from I to I (I). The intriguing characteristics should provide guidance for further optoelectronic applications of these Pb-free halide hybrid materials.
无铅卤化物杂化材料因其在光电子应用中的潜力而备受关注。然而，基于杂原子的胺基无铅卤化锡杂化单晶尚未得到充分研究。研究了(ACHCHNH)SnBr（A = OH或SH）和(BCHCHNH)SnI（B = I或SH）单晶的详细合成过程、生长、晶体结构和稳定性。有趣的是，(IHNCHCHSSCHCHNH)HPO在约620 nm处表现出橙红色光致发光（PL），平均PL寿命约为912 ns。(HSCHCHNH)SnI单晶在620 nm处表现出PL峰，平均PL寿命约为0.607 ns。更重要的是，(HSCHCHNH)SnI单晶在暴露于HPO溶液和环境气氛时表现出可逆的红黑颜色转变，这归因于从Sn到Sn的氧化，而不是从I到I（I）的氧化。这些有趣的特性应为这些无铅卤化物杂化材料的进一步光电子应用提供指导。
