✦ LIBER ✦

Low-temperature synthesis of nanocrystalline ZnGa2O4:Tb3+ phosphors via the Pechini method

✍ Scribed by Zhihua Xu; Yongxiang Li; Zhifu Liu; Zhi Xiong

Publisher: Elsevier Science
Year: 2004
Tongue: English
Weight: 289 KB
Volume: 110
Category: Article
ISSN: 0921-5107
DOI: 10.1016/j.mseb.2004.01.023

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✦ Synopsis

The synthesis of trivalent terbium doped ZnGa 2 O 4 nanosized new phosphors by the Pechini method was reported. Well-crystallized ZnGa 2 O 4 :Tb 3+ phosphors were obtained at low-temperature about 550 • C. The phosphors formed porous agglomerates which consist of spherical nanocrystallites with a uniform size at about 30 nm. The photoluminescence of the phosphors included both the luminescence of ZnGa 2 O 4 host and characteristic emission of Tb 3+ , and the excitation spectra showed an energy transfer from the host lattice to the activator. The Tb 3+ emission from the phosphors prepared by the Pechini process was more intensive than that of phosphors by solid-state reaction process.

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