Correlating O-deficiency and luminescence property of Tb^(3+)þdoped SrO

作     者：Kaina Wang Jipeng Fu Shuqin Chang Xuan Sun Tianyi Sun Su Zhang Ran Pang Lihong Jiang Xiaojun Kuang Evan Wenbo Zhao Chengyu Li Shiqing Xu Mingxue Tang 

作者机构：Key Laboratory of Rare Earth Optoelectronic Materials and Devices of Zhejiang ProvinceInstitute of Optoelectronic Materials and DevicesChina Jiliang University310018 HangzhouChina Center for High Pressure Science and Technology Advanced Research100094 BeijingChina State Key Laboratory of Rare Earth Resources UtilizationChangchun Institute of Applied ChemistryChinese Academic of Sciences130022 ChangchunChina Guangxi Key Laboratory of Electrochemical and Magneto-chemical Functional MaterialsCollege of Chemistry and BioengineeringGuilin University of TechnologyGuilin 541004PR China Magnetic Resonance Research CenterInstitute for Molecules and MaterialsRadboud UniversityNijmegen6525AJthe Netherlands 

出 版 物：《Advanced Powder Materials》 (先进粉体材料（英文）)

年 卷 期：2023年第2卷第3期

页      面：28-35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：supported by the Natural Science Foundation of Zhejiang Province(Grant No.LQ21E020006) the Fundamental Research Funds for the Provincial Universities of Zhejiang(Grant No.2021YW46) the National Natural Science Foundation of China(Grant 62205322,22090043) 

主　　题：Oxygen vacancy Spectral modulation Long-lasting phosphorescence White LEDs Energy transfer 

摘      要：Cubic rock salt can lower down or break the rare earth transition barrier through interstitial or vacancy defects owing to its great deformation and rotationfl***,we demonstrate that oxygen vacancies in SrO are induced by proper oxidization and atmosphere adjustment,resulting in defects with various depths and crystalfield *** thermally assisted tunneling from defects to 5 D_(4) state and electronic population decrease on 5 D_(3) state of Tb^(3+)þare observed by the deformation of adjacent oxygen octahedral ***,the asprepared SrO:0.01 Tb^(3+)þphosphors,commercial BaMgAl10O17:Eu^(2+)þblue phosphor,and CaAlSiN3:Eu^(2+)þred phosphor are mixed and coated onto 280 nm deep-ultraviolet LED chip to assemble white light-emitting LED *** LEDs show CCT of 3850 K,4136 K,and 4741 K,with color rendering index of 90.3,90.8,and 92.1,*** insights will advance the fundamental knowledge of crystal engineering in cubic rock salt,and enable new ways to manipulate energy transfer and electronic transition via defects.