期刊

Journal of Materials Chemistry C

标题

Growth, characterization and optoelectronic applications of pure-phase large-area CsPb2Br5 flake single crystals

作者

Zhaojun Zhang, Yanming Zhu, Weiliang Wang, Wei Zheng, Richeng Lin, Feng Huang

摘要

To clarify the controversies on CsPb2Br5 and extend its optoelectronic applications, from a thermodynamic equilibrium growth system, pure phase high quality CsPb2Br5 single crystals (maximum area: 5 × 5 mm2, minimum thickness: 160 nm) were successfully obtained. Optical characterization results indicated a 3.87 eV bandgap for CsPb2Br5, clarifying the controversies on CsPb2Br5. The fabricated photodetector showed a sensitive and fast deep-UV photoresponse, demonstrating the potential applications of CsPb2Br5 in deep-UV detection. Theoretical calculations suggested that the wide bandgap of CsPb2Br5 resulted from its layered structure and short Pb–Br bonds.

原文链接

http://pubs.rsc.org/en/content/articlelanding/2018/tc/c7tc04834c#!divAbstract