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Title of Journal: J Mater Sci Mater Electron

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Abbravation: Journal of Materials Science: Materials in Electronics

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Springer US

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DOI

10.1006/fgbi.2000.1207

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1573-482X

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Luminescent properties of sol–gel processed redem

Authors: Huidong Xie Fei Li Haihong Xi Ran Tian Xiaochang Wang
Publish Date: 2014/10/15
Volume: 26, Issue: 1, Pages: 23-31
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Abstract

A series of redemitting phosphors Ca06Sr04−15y−15zMo1−xWxO4EuyBiz x = 0–1 y = 0–014 z = 0–012 have been synthesized by a sol–gel method The effects of calcining temperature concentrations of Bi3+ and Eu3+ and the W/Mo ratio on the luminescent properties were investigated Xray diffraction and scanning electron microscopic results showed that asprepared phosphors were of single phase with several microns The Bi3+ and Eu3+ codoped phosphors showed remarkably intense red emission at 618 nm The emission intensities of the series reached maximum for compositions at x = 04 y = 012 and z = 008 when the calcining temperature was 900 °C Temperature dependent emission intensity of the phosphor suggested that the assynthesized product had good thermal stability with a thermal quenching activation energy of 031 eV The decay curves showed the energy transfer efficiency from MoO4 2− to Eu3+ increased with an increase in the Mo6+ doping content

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