Preparation and Luminescent Properties of Ca10Si6O21Cl2:Dy3+, Eu3+ Warm White Phosphors

被引：0

作者：

Zhou F. ^{[1
]}

Zheng L. ^{[1
]}

Wang M. ^{[1
]}

Zheng S. ^{[1
]}

Wang Z. ^{[1
]}

Li P. ^{[2
]}

机构：

[1] College of Energy, Xiamen University, Xiamen

[2] School of Aerospace Engineering, Xiamen University, Xiamen

来源：

Zhongguo Xitu Xuebao/Journal of the Chinese Rare Earth Society | 2022年 / 40卷 / 05期

关键词：

Energy transfer; Luminescence properties; Rare earth ion; Warm white;

D O I：

10.11785/S1000-4343.20220503

中图分类号：

学科分类号：

摘要：

In order to realize a stable full spectrum warm white LED lighting, it is of great significance to use a more efficient near ultraviolet chip as the excitation source to excite a single substrate warm white phosphor. In this paper, Ca10Si6O21Cl2:Dy3+ phosphors were prepared by high temperature solid-state method. The emission of Ca10Si6O21Cl2:Dy3+ phosphors compose of blue light at 480 nm and yellow light at 575 nm. No obvious concentration quenching phenomenon was observed under high Dy3+ doping concentration. Based on economic considerations, the optimal doping concentration of Dy3+ is selected as 7%. Continuously, the Ca9.93-xSi6O21Cl2:0.07Dy3+, xEu3+ phosphors were prepared. Under the excitation of 394 nm near ultraviolet light, four obvious emission peaks at 480, 575, 594 and 614 nm were observed, so that warm white light can be obtained by superposition of red, yellow and blue. Further studies showe that there is a 4F9/2→5D0 energy transfer between Dy3+ and Eu3+, and the color coordinates of Ca9.82Si6O21Cl2:0.07Dy3+, 0.11Eu3+ phosphors are (0.3761, 0.3523), and the color temperature is 4000 K. Therefore, it suggested that the as prepared phosphor has a potential application prospect. © 2022, Editorial Office of Journal of the Chinese Society of Rare Earths. All right reserved.

引用

页码：744 / 751

页数：7

共 21 条

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