A sandwiched luminescent heterostructure based on lanthanide-doped Gd_(2)O_(2)S@NaYF_(4)core/shell nanocrystals

作     者：Dengfeng Yang Wei Zheng Ping Huang Meiran Zhang Wei Zhang Zhiqing Shao Wen Zhang Xiaodong Yi Xueyuan Chen 

作者机构：CAS Key Laboratory of Design and Assembly of Functional NanostructuresFujian Key Laboratory of Nanomaterialsand State Key Laboratory of Structural ChemistryFujian Institute of Research on the Structure of MatterChinese Academy of SciencesFuzhouChina Fujian Science and Technology Innovation Laboratory for Optoelectronic Information of ChinaFuzhouChina Fujian CollegeUniversity of Chinese Academy of SciencesFuzhouChina College of ChemistryFuzhou UniversityFuzhouChina 

出 版 物：《Aggregate》 (聚集体（英文）)

年 卷 期：2023年第4卷第6期

页      面：163-171页

核心收录：

学科分类：081704[工学-应用化学] 07[理学] 08[工学] 0817[工学-化学工程与技术] 0703[理学-化学] 070301[理学-无机化学] 

基　　金：National Key R&D Program of China,Grant/Award Number:2022YFB3503700 NSFC,Grant/Award Numbers:12074379,12174391,U22A20398,22135008 the Youth Innovation Promotion Association of CAS,Grant/Award Number:2020305 Natural Science Foundation of Fujian Province,Grant/Award Numbers:2020I0037,2021L3024,2022H0040 

主　　题：Gd_(2)O_(2)S heterostructure lanthanide NaYF_(4) upconversion luminescence 

摘      要：Lanthanide(Ln^(3+))oxysulfide nanocrystals(NCs)have great prospect in many advanced technologies;however,they suffer from a low photoluminescence efficiency due to the volatility of sulfur and deleterious surface quenching ***,we report a novel sandwiched luminescent heterostructure based on Ln^(3+)-doped Gd_(2)O_(2)S@NaYF_(4)core/shell NCs with tunable sulfur content in the sandwich *** means of Eu^(3+)as the sensitive structural probes,we unravel the ligand-mediated structure control of the NCs from Gd_(2)O_(3):Ln^(3+)@NaYF_(4)to Gd_(2)O_(2)S:Ln^(3+)@NaYF_(4)with tailored S2–*** a sandwich-type core/shell heterostructure enables us to achieve efficient and multicolor downshifting and upconversion luminescence(UCL),with up to 208.8 folds of enhancement in UCL intensity as compared to that of their core-only *** findings provide a general approach for the controlled synthesis of lanthanide oxysulfide@fluoride heterostructure,which offers a new way for the materials design towards diverse emerging applications.