Single-Composition White Light Emission from Dy3+ Doped Sr₂CaWO₆

Yannan Dai; Shuai Yang; Yongkui Shan; Chun-Gang Duan; Hui Peng; Fan Yang; Qingbiao Zhao

doi:10.3390/ma12030431

Single-Composition White Light Emission from Dy³⁺ Doped Sr₂CaWO₆

Materials (Basel). 2019 Jan 31;12(3):431. doi: 10.3390/ma12030431.

Authors

Yannan Dai¹, Shuai Yang², Yongkui Shan³, Chun-Gang Duan⁴, Hui Peng⁵, Fan Yang⁶, Qingbiao Zhao⁷

Affiliations

¹ School of Chemistry and Molecular Engineering, East China Normal University, Shanghai 200241, China. [email protected].
² School of Chemistry and Molecular Engineering, East China Normal University, Shanghai 200241, China. [email protected].
³ School of Chemistry and Molecular Engineering, East China Normal University, Shanghai 200241, China. [email protected].
⁴ Key Laboratory of Polar Materials and Devices, Ministry of Education, Department of Optoelectronics, East China Normal University, Shanghai 200241, China. [email protected].
⁵ Key Laboratory of Polar Materials and Devices, Ministry of Education, Department of Optoelectronics, East China Normal University, Shanghai 200241, China. [email protected].
⁶ School of Chemistry and Molecular Engineering, East China Normal University, Shanghai 200241, China. [email protected].
⁷ Key Laboratory of Polar Materials and Devices, Ministry of Education, Department of Optoelectronics, East China Normal University, Shanghai 200241, China. [email protected].

Abstract

A series of Dy³⁺ ion doped Sr₂CaWO₆ phosphors with double perovskite structure were synthesized by traditional high temperature solid-state method. It was found that there is significant energy transfer between Dy³⁺ and the host lattice, and the intensities of emission peaks at 449 nm (blue), 499 nm (cyan), 599 nm (orange), 670 nm (red), and 766 nm (infra-red) can be changed by adjusting the concentration of dopant amount of Dy³⁺ ion in Sr₂CaWO₆. The correlated color temperature of Dy³⁺ ion doped Sr₂CaWO₆ phosphors can be tuned by adjusting the concentration of Dy³⁺ ion. Upon optimal doping at 1.00 mol% Dy³⁺, white light with chromaticity coordinate (0.34, 0.33) was emitted under excitation at 310 nm. Thus, single composition white emission is realized in Dy³⁺ doped Sr₂CaWO₆.

Keywords: double perovskite; energy transfer; photoluminescence; white light-emitting.

Grants and funding

11200-120215-10363/East China Normal University