Precipitation Synthesis and Color-Tailorable Luminescence of α-Zr(HPO4)2: RE3+(RE = Eu, Tb) Nanosheet Phosphors

Shikao Shi*, Xiaojun Zhang, Shuping Wang, Lina Geng, Jianjun Zhang, Wei Chen

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

7 Citations (Scopus)

Abstract

The rare earth (RE = Eu and Tb) ions-doped α-Zr(HPO4)2 (ZrP) nanosheet phosphors were synthesized by direct precipitation method, and their structures and photoluminescence properties were investigated. The results of X-ray diffraction and scanning electron microscopy indicated that the systems of ZrP:RE3+ had similar nanosheet structure except with relatively larger interlayer spacing as compared with pure α-ZrP. Under the excitation of UV light, the ZrP:RE3+ nanosheet phosphors showed red and green emission peaks corresponding to the 5D07F2 transition of Eu3+ and the 5D47F5 transition of Tb3+, respectively. After Eu3+ and Tb3+ were co-doped in ZrP host, not only the red and green emission peaks were simultaneously observed, but also the luminescent intensity and fluorescence lifetimes of Tb3+ were gradually decreased with the increase in Eu3+-doping concentration, which implied the energy transfer from Tb3+ to Eu3+ happened. It was deduced that the energy transfer from Tb3+ to Eu3+ occurred via exchange interaction. Through optimization to the samples, a nearly white-light emission with the color coordinate (0.322, 0.263) was achieved under 377 nm excitation. The ZrP:RE3+ nanosheet phosphors may be a potential color-tailorable candidate for fabricating optoelectronic devices such as electroluminescence panels.

Original languageEnglish
Pages (from-to)3836-3841
Number of pages6
JournalJournal of the American Ceramic Society
Volume98
Issue number12
DOIs
Publication statusPublished - 1 Dec 2015
Externally publishedYes

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