机械容积
荧光粉
材料科学
熔盐
兴奋剂
电磁屏蔽
光电子学
晶体结构
Crystal(编程语言)
光致发光
掺杂剂
光学
纳米技术
结晶学
复合材料
化学
冶金
物理
计算机科学
程序设计语言
作者
Mingju Zhu,Jiangcheng Luo,Tianlong Liang,Yudian Zheng,Xu Li,Zefeng Huang,Biyun Ren,Xianhui Zhang,Jianwei Li,Zitong Zheng,Junhao Wu,Yongle Zhong,Yu Wang,Chunfeng Wang,Dengfeng Peng
标识
DOI:10.1002/lpor.202300517
摘要
Abstract Owing to their unique characteristic of direct mechanical‐to‐optical energy conversion, mechanoluminescence (ML) crystals have drawn considerable interest for visible stress sensing, flexible and stretchable displays, and advanced anti‐counterfeiting. However, among the visible emissions of synthetic ML materials, high‐performance red‐emission semiconductors with ideal color‐rendering indices are relatively scarce, which restricts their future applications. In this work, red ML emission with CIE coordinates (0.6395 and 0.3572) in Mn‐doped ZnGa 2 S 4 prepared by a molten salt shielding synthesis method in the air is reported. ZnGa 2 S 4 has a cubic crystal structure composed of a layered [ZnS 4 ] tetrahedral unit that plays an important role in efficient ML. Based on density functional theory calculations, the relationship between ML performance and crystal structure is revealed, which will help in the development of new high‐quality ML materials. The Mn‐doping of ZnGa 2 S 4 causes a slight deformation of the crystal structure, leading to band bending and the formation of ML features in response to mechanical stimuli. The deep‐red ML emission of the ZnGa 2 S 4 :Mn crystals prepared by this method holds great promise for advanced flexible and stable displays and force/pressure sensor applications.
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