Time-resolved exciton-emission spectroscopy of anatase

被引：4
|
作者：
Sildos, I [1 ]
Kiisk, V [1 ]
Lange, S [1 ]
Aarik, J [1 ]
机构：
[1] Univ Tartu, Inst Phys, EE-51014 Tartu, Estonia
来源：
ADVANCED ORGANIC AND INORGANIC OPTICAL MATERIALS | 2003年 / 5122卷
关键词：
anatase; time-resolved photoluminescence; self-trapped exciton;
D O I：
10.1117/12.515702
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
At low temperatures, time-resolved polarised photoluminescence of anatase single crystals and nanocrystalline thin films was studied in a nanosecond time scale. In both kinds of samples, the emission spectra showed two relatively broad shifted bands peaking at about 2.35 eV and 2.75 eV and possessing decay times of above 1 mus and below 50 ns, respectively. The bands have been interpreted as those originating from the singlet and triplet states of the self-trapped exciton of anatase.
引用
收藏
页码：56 / 60
页数：5
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