Single-composition white light emission from Dy 3+ doped Sr 2 CaWO 6

Yannan Dai, Shuai Yang, Yongkui Shan, Chun Gang Duan, Hui Peng, Fan Yang*, Qingbiao Zhao

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

32 Scopus citations

Abstract

A series of Dy 3+ ion doped Sr 2 CaWO 6 phosphors with double perovskite structure were synthesized by traditional high temperature solid-state method. It was found that there is significant energy transfer between Dy 3+ 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 Dy 3+ ion in Sr 2 CaWO 6 . The correlated color temperature of Dy 3+ ion doped Sr 2 CaWO 6 phosphors can be tuned by adjusting the concentration of Dy 3+ ion. Upon optimal doping at 1.00 mol% Dy 3+ , white light with chromaticity coordinate (0.34, 0.33) was emitted under excitation at 310 nm. Thus, single composition white emission is realized in Dy 3+ doped Sr 2 CaWO 6 .

Original languageEnglish
Article number431
JournalMaterials
Volume12
Issue number3
DOIs
StatePublished - 31 Jan 2019

Keywords

  • Double perovskite
  • Energy transfer
  • Photoluminescence
  • White light-emitting

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