Formation and stabilization of F centers following direct generation of self-trapped excitons in KCl crystals

被引：0
|
作者：
I. A. Kudryavtseva
E. A. Vasil’chenko
A. Ch. Lushchik
Ch. B. Lushchik
机构：
[1] Tartu University,Institute of Physics
来源：
Physics of the Solid State | 1999年 / 41卷
关键词：
Spectroscopy; State Physics; Direct Generation; Decay Channel; Irradiation Temperature;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
The spectrum of luminescent F centers generated in high-purity KCl crystals by 7–10.2-eV photons has been measured at 230 K. The pulsed annealing of these centers (250–550 K), as well as the dependence of the efficiency of stable F-center generation on irradiation temperature (80–500 K) has been studied. The efficiencies of F− and Cl3−-center generation are maximum under direct optical creation of self-trapped excitons in the region of the Urbach intrinsicabsorption tail. Besides the exciton decay with formation of F centers and mobile H centers, a high-temperature exciton decay channel which involves creation of cation defects stabilizing the H centers has been revealed.
引用
收藏
页码：388 / 395
页数：7
相关论文
共 50 条
12345