中国物理B ›› 2022, Vol. 31 ›› Issue (12): 127802-127802.doi: 10.1088/1674-1056/ac6160

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Luminescent characteristics of Tm3+/Tb3+/Eu3+ tri-doped Na5Y9F32 single crystals for white emission with high thermal stability

Lizhi Fang(方立志)1, Xiong Zhou(周雄)1, Zhiwei Zhao(赵志伟)2, Biao Zheng(郑标)3, Haiping Xia(夏海平)1,†, Jun Wang(王军)3,‡, Hongwei Song(宋宏伟)4, and Baojiu Chen(陈宝玖)5   

  1. 1 Key Laboratory of Photo-electronic Materials, Ningbo University, Ningbo 315211, China;
    2 Taizhou Special Equipment Inspection and Research Institute, Taizhou 318000, China;
    3 Fujian Provincial Key Laboratory of Functional Marine Sensing Materials, Center for Advanced Marine Sensing Materials and Smart Sensors, Minjiang University, Fuzhou 350108, China;
    4 State Key Laboratory on Integrated Optoelectronics, College of Electronic Science and Engineering and College of Physics, Jilin University, Changchun 130012, China;
    5 Department of Physics, Dalian Maritime University, Dalian 116026, China
  • 收稿日期:2022-01-09 修回日期:2022-03-15 接受日期:2022-03-28 出版日期:2022-11-11 发布日期:2022-11-19
  • 通讯作者: Haiping Xia, Jun Wang E-mail:hpxcm@nbu.edu.cn;wjnaf@163.com
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant No. 62275133), the Natural Science Foundation of Zhejiang Province of China (Grant No. LY22E020002), the Natural Science Foundation of Ningbo (Grant Nos. 2021J077 and 202003N4099), and K.C. Wong Magna Fund in Ningbo University.

Luminescent characteristics of Tm3+/Tb3+/Eu3+ tri-doped Na5Y9F32 single crystals for white emission with high thermal stability

Lizhi Fang(方立志)1, Xiong Zhou(周雄)1, Zhiwei Zhao(赵志伟)2, Biao Zheng(郑标)3, Haiping Xia(夏海平)1,†, Jun Wang(王军)3,‡, Hongwei Song(宋宏伟)4, and Baojiu Chen(陈宝玖)5   

  1. 1 Key Laboratory of Photo-electronic Materials, Ningbo University, Ningbo 315211, China;
    2 Taizhou Special Equipment Inspection and Research Institute, Taizhou 318000, China;
    3 Fujian Provincial Key Laboratory of Functional Marine Sensing Materials, Center for Advanced Marine Sensing Materials and Smart Sensors, Minjiang University, Fuzhou 350108, China;
    4 State Key Laboratory on Integrated Optoelectronics, College of Electronic Science and Engineering and College of Physics, Jilin University, Changchun 130012, China;
    5 Department of Physics, Dalian Maritime University, Dalian 116026, China
  • Received:2022-01-09 Revised:2022-03-15 Accepted:2022-03-28 Online:2022-11-11 Published:2022-11-19
  • Contact: Haiping Xia, Jun Wang E-mail:hpxcm@nbu.edu.cn;wjnaf@163.com
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant No. 62275133), the Natural Science Foundation of Zhejiang Province of China (Grant No. LY22E020002), the Natural Science Foundation of Ningbo (Grant Nos. 2021J077 and 202003N4099), and K.C. Wong Magna Fund in Ningbo University.

摘要: By using an improved Bridgman method, 0.3 mol% Tm$^{3+}/0.6$ mol% Tb$^{3+}/y$ mol% Eu$^{3+}$ ($y = 0$, 0.4, 0.6, 0.8) doped Na$_{5}$Y$_{9}$F$_{32}$ single crystals were prepared. The x-ray diffraction, excitation spectra, emission spectra and fluorescence decay curves were used to explore the crystal structure and optical performance of the obtained samples. When excited by 362 nm light, the cool white emission was realized by Na$_{5}$Y$_{9}$F$_{32}$ single crystal triply-doped with 0.3 mol% Tm$^{3+}/0.6$ mol% Tb$^{3+}/0.8$ mol% Eu$^{3+}$, in which the Commission Internationale de l'Eclairage (CIE) chromaticity coordinate was (0.2995, 0.3298) and the correlated color temperature (CCT) was 6586 K. The integrated normalized emission intensity of the tri-doped single crystal at 448 K could keep 62% of that at 298 K. The internal quantum yield (QY) was calculated to be $\sim 15.16$% by integrating spheres. These results suggested that the single crystals tri-doped with Tm$^{3+}$, Tb$^{3+}$ and Eu$^{3+}$ ions have a promising potential application for white light-emitting diodes (w-LEDs).

关键词: Tm3+/Tb3+/Eu3+ triply-doped Na5Y9F32, white light emission, energy transfer process, thermal stability

Abstract: By using an improved Bridgman method, 0.3 mol% Tm$^{3+}/0.6$ mol% Tb$^{3+}/y$ mol% Eu$^{3+}$ ($y = 0$, 0.4, 0.6, 0.8) doped Na$_{5}$Y$_{9}$F$_{32}$ single crystals were prepared. The x-ray diffraction, excitation spectra, emission spectra and fluorescence decay curves were used to explore the crystal structure and optical performance of the obtained samples. When excited by 362 nm light, the cool white emission was realized by Na$_{5}$Y$_{9}$F$_{32}$ single crystal triply-doped with 0.3 mol% Tm$^{3+}/0.6$ mol% Tb$^{3+}/0.8$ mol% Eu$^{3+}$, in which the Commission Internationale de l'Eclairage (CIE) chromaticity coordinate was (0.2995, 0.3298) and the correlated color temperature (CCT) was 6586 K. The integrated normalized emission intensity of the tri-doped single crystal at 448 K could keep 62% of that at 298 K. The internal quantum yield (QY) was calculated to be $\sim 15.16$% by integrating spheres. These results suggested that the single crystals tri-doped with Tm$^{3+}$, Tb$^{3+}$ and Eu$^{3+}$ ions have a promising potential application for white light-emitting diodes (w-LEDs).

Key words: Tm3+/Tb3+/Eu3+ triply-doped Na5Y9F32, white light emission, energy transfer process, thermal stability

中图分类号:  (Optically stimulated luminescence)

  • 78.60.Lc
78.66.Sq (Composite materials)