TEMPERATURE-DEPENDENCE OF THE LUMINESCENCE OF TIO2 POWDER
TEMPERATURE-DEPENDENCE OF THE LUMINESCENCE OF TIO2 POWDER
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DOI：
10.1007/bf00324533
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发表时间：
1993-06-01
期刊：
影响因子：
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通讯作者：
SCHUBNELL, M
中科院分区：
文献类型：
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作者：
FORSS, L;SCHUBNELL, M
在300 ~ 800 K温度范围内，测量了粉末二氧化钛在真空、氮气和水蒸气中的发光量子产率随温度的变化关系。所观察到的发光归因于来自表面态的发光。我们发现，发光是热猝灭，预测一个简单的模型。此外，随着温度的升高，发光向更短的波长移动。我们还观察到真空中的发光在氮气或水蒸气的存在下被弱猝灭。
The temperature dependence of the luminescence quantum yield of powdered titaniumdioxide in vacuum, nitrogen, and water vapor, respectively, was measured in the temperature range 300 K to 800 K. The observed luminescence is attributed to luminescence from surface states. We find that the luminescence is thermally quenched, as predicted by a simple model. Furthermore, the luminescence is shifted towards shorter wavelengths with increasing temperature. We also observed that the luminescence in vacuum is weakly quenched in the presence of nitrogen or water vapor.