Affiliation:
1. School of Physics and Optoelectronic Engineering Hangzhou Institute for Advanced Study University of Chinese Academy of Sciences Hangzhou Zhejiang 310024 P. R. China
2. CAS Key Laboratory of Materials for High Power Laser State Key Laboratory of High Field Laser Physics and CAS Center for Excellence in Ultra‐Intense Laser Science Shanghai Institute of Optics and Fine Mechanics Chinese Academy of Sciences Shanghai 201800 P. R. China
Abstract
AbstractPerovskite micro/nanostructure with regular compact structure and high optical gain has provided a viable route toward the miniaturization of micro/nanolaser without an external cavity. Herein, a new process for the ultra‐rapid room‐temperature synthesis of perovskite micro/nanocubes with controllable size by combining surface‐induced crystallization with the perovskite solution route is described. At first, the perovskite precursors PbBr2 are encapsulated into the nanoporous glass monolith and then react with CsBr solution on a glass surface, where nanoscopic pores facilitate heterogeneous nucleation significantly. The whole synthesis process of micro/nanocubes is ultra‐rapid and complete within 20 s. Based on the synthetic perovskite micro/nanocubes, low‐threshold upconversion lasing is successfully realized with a high‐quality factor of 2845, which further confirms the high quality and excellent optical performance of perovskite micro/nanocubes. This powerful solution route provides an ultra‐rapid and facile method for the synthesis of perovskite micro/nanostructure toward miniaturized optoelectronic devices.
Funder
National Natural Science Foundation of China
Subject
Atomic and Molecular Physics, and Optics,Electronic, Optical and Magnetic Materials