Influence of calcining temperature on photoluminescence and thermal quenching in europium-doped Y<sub>2</sub>SiO<sub>5</sub> using the MOD process期刊界 All Journals 搜尽天下杂志传播学术成果专业期刊搜索期刊信息化学术搜索

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Influence of calcining temperature on photoluminescence and thermal quenching in europium-doped Y₂SiO₅ using the MOD process

Authors:	Y LiuH Chen H Tateyama

Institution:	^a Department of Inorganic Composite Materials, Kyushu National Industrial Research Institute, 807-1 Shuku, Tosu, Saga 841-0052 Japan ^b School of Materials Science and Engineering, Xi’an Jiaotong University, Xi’an, Shaanxi 710049, China

Abstract:	The crystalline Eu_0.25Y_1.75SiO₅ (EYSO) fine powders were prepared using metallorganic decomposition process, in which the pure X₁- and X₂-Y₂SiO₅ phases were obtained by calcining at temperatures from 850°C to 1600°C. The influence of calcining temperature on photoluminescence (PL) and thermal quenching were systematically investigated from room temperature to 573 K for the first time. As a consequence, the X₂-EYSO was higher in light emission intensities than the X₁-EYSO, but the X₁-EYSO possessed better temperature dependence of PL. The phase structure had a significant effect on the light emission intensity and energy as well as its temperature characteristics in the EYSO.

Keywords:	Europium-doped Y₂SiO₅
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