"Tunable Emission and Energy Transfer of the Novel KY_1-x(MoO₄)_2-y(WO₄)_y:xLn<SUP>3+</SUP> (Ln<SUP>3+</SUP> = Dy<SUP>3+</SUP>, Eu<SUP>3+</SUP>, and Tm<SUP>3+</SUP>) Single-phase White Luminescence Phosphor for White LEDs"

作者全名："Zhu, Hai; He, Bin; Huang, Weigang"

作者地址："[Zhu, Hai] Southwest Jiaotong Univ, Peoples Hosp Chengdu 3, Affiliated Hosp, Dept Oncol, Chengdu 610031, Peoples R China; [Zhu, Hai] Chongqing Med Univ, Affiliated Hosp Chengdu 2, Chengdu 610031, Peoples R China; [Zhu, Hai] Southwest Jiaotong Univ, Peoples Hosp Chengdu 3, Affiliated Hosp, Med Res Ctr, Chengdu 610031, Peoples R China; [He, Bin] Sichuan Univ, Coll Biomed Engn, Natl Engn Res Ctr Biomat, Chengdu 610064, Peoples R China; [Huang, Weigang] Sichuan Univ, Coll Mat Sci & Engn, Chengdu 610064, Peoples R China"

通信作者："Huang, WG (通讯作者)，Sichuan Univ, Coll Mat Sci & Engn, Chengdu 610064, Peoples R China."

来源：JOURNAL OF WUHAN UNIVERSITY OF TECHNOLOGY-MATERIALS SCIENCE EDITION

ESI学科分类：MATERIALS SCIENCE

WOS号：WOS:001107853500018

JCR分区：Q4

影响因子：1.3

年份：2023

卷号：38

期号：6

开始页：1278

结束页：1286

文献类型：Article

关键词：rare earth; phosphors; white LEDs; energy transfer; sol-gel method

摘要："The phosphors of KY1-x(MoO4)(2-y)(WO4)(y):xLn(3+) (Ln(3+) = Tm3+, Dy3+, Eu3+) were synthesized by using a sol-gel method. Then, the crystal structure, luminescence properties, energy transfer, and white emission of the prepared materials were researched. The molar ratio of the anion group on the photoluminescence(PL) emission and excitation intensity were investigated, revealing that the optimum intensity could be obtained by using = 3:1. The optimal Dy3+ doping concentration of KY(MoO4)(1.5)(WO4)(0.5) was obtained. In addition, the color-tunable emissions of Dy3+/Eu3+-codoped KY(MoO4)(1.5)(WO4)(0.5) phosphors were observed because of the effective energy transfer (ET) from Dy3+ to Eu3+ ions. Finally, by doping appropriate concentrations of Tm3+, Dy3+, and Eu3+ and different concentrations of (WO4)(2-), white light emitting phosphors KY0.92(WO4)(2):0.01Tm(3+).0.06Dy(3+), 0.01Eu(3+) with excellent color-rending properties were obtained. The chromaticity coordinate was calculated as (x = 0.3238, y = 0.3173), closing to the artificial daylight (D65, x = 0.313, y = 0.329) illuminant, and which indicates the potential application of near ultraviolet White light-emitting diodes (WLEDs)."

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