Mechanically Excited Multicolor Luminescence in Lanthanide Ions

作     者：Du, Yangyang Jiang, Yue Sun, Tianying Zhao, Jianxiong Huang, Bolong Peng, Dengfeng Wang, Feng 

作者机构：City Univ Hong Kong Dept Mat Sci & Engn 83 Tat Chee Ave Hong Kong Peoples R China City Univ Hong Kong Shenzhen Res Inst Shenzhen 518057 Peoples R China Shenzhen Univ Coll Optoelect Engn Minist Educ & Guangdong Prov Key Lab Optoelect Devices & Syst Shenzhen 518060 Peoples R China Hong Kong Polytech Univ Dept Appl Biol & Chem Technol Hung Hom Hong Kong Peoples R China 

出 版 物：《ADVANCED MATERIALS》 (先进材料)

年 卷 期：2019年第31卷第7期

页      面：1807062-1807062页

核心收录：

学科分类：08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 0703[理学-化学] 0702[理学-物理学] 

基　　金：National Natural Science Foundation of China [21773200, 51502018, 61875136, 21771156, 11504309] Research Grants Council of Hong Kong [CityU 11204717, 9042485] City University of Hong Kong Shenzhen Fundamental Research Project Scientific Research Starting Foundation for the Youth Scholars of Shenzhen University Research Grants Council of Hong Kong for an Early Career Scheme (ECS) fund [PolyU 253026/16P] 

主　　题：CaZnOS lanthanides mechanoluminescence multicolor tuning optical coding 

摘      要：Mechanoluminescence (ML) featuring photon emission by mechanical stimuli is promising for applications such as stress sensing, display, and artificial skin. However, the progress of utilizing ML processes is constrained by the limited range of available ML emission spectra. Herein, a general strategy for expanding the emission of ML through the use of lanthanide emitters is reported. A lithium-assisted annealing method for effective incorporation of various lanthanide ions (e.g., Tb3+, Eu3+, Pr3+, Sm3+, Er3+, Dy3+, Ho3+, Nd3+, Tm3+, and Yb3+) into CaZnOS crystals that are identified as one of the most efficient host materials for ML is developed. These doped CaZnOS crystals show efficient and tunable ML spanning full spectrum from violet to near infrared. The multicolor ML materials are used to create encrypted anticounterfeiting patterns, which produce spatially resolvable optical codes under single-point dynamic pressure of a ballpoint pen.