Luminescent properties of Eu2+ and Ho3+ co-doped CaGa2S4 phosphor

Chongfeng Guo, Chunxiang Zhang, Yühua Lu, Qiang Tang, Qiang Su*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

18 Citations (Scopus)

Abstract

A new persistent yellow-emitting phosphor CaGa2S4: Eu2+, Ho3+ was prepared by a solid-state method. The luminescence properties, including thermoluminescence (TL) glow curve and its spectral decomposition, as well as the long decay time curve, were studied. The results revealed that a new trapping level with a suitable depth was created due to co-doped Ho3+, which led to the long afterglow at room temperature. Trapping depths were evaluated by a TL glow curve fitted by a general order kinetics formula. A mechanism for the long-duration phosphorescence from Eu2+ in CaGa2S4: Eu 2+, Ho3+ was also proposed.

Original languageEnglish
Pages (from-to)1588-1593
Number of pages6
JournalPhysica Status Solidi (A) Applied Research
Volume201
Issue number7
DOIs
Publication statusPublished - May 2004

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