Two-Dimensional Crystalline Gridding Networks of Hybrid Halide Perovskite for Random Lasing

Crystals

Haibin Xue¹  Xinping Zhang²  Jingyun Hu² 

[1] Eighth Medical Center of the General Hospital of the Chinese People’s Liberation Army, Beijing 100091, China;Institute of Information Photonics Technology, Beijing University of Technology, Beijing 100124, China;

关键词: two-dimensional patterning;    periodical grids;    hybrid halide perovskites;    random lasing;    large-scale thin-film networks;   

DOI  :  10.3390/cryst11091114

来源: DOAJ

【 摘 要 】

We report fabrication of large-scale homogeneous crystallization of CH₃NH₃PbBr₃ (MAPbBr₃) in the patterned substrate by a two-dimensional (2D) grating. This achieves high-quality optotelectronic structures on local sites in the micron scales and a homogeneous thin-film device in a centimeter scale, proposing a convenient technique to overcome the challenge for producing large-area thin-film devices with high quality by spin-coating. Through matching the concentration of the MAPbBr₃/DMF solutions with the periods of the patterning structures, we found an optimized size of the patterning channels for a specified solution concentration (e.g., channel width of 5 μm for a concentration of 0.14 mg/mL). Such a design is also an excellent scheme for random lasing, since the crystalline periodic networks of MAPbBr₃ grids are multi-crystalline constructions, and supply strong light-scattering interfaces. Using the random lasing performance, we can also justify the crystallization qualities and reveal the responsible mechanisms. This is important for the design of large-scale optoelectronic devices based on thin-film hybrid halide perovskites.

【 授权许可】

Unknown