Characteristics of thermally stimulated luminescence and conductivity of insulating crystal

被引:6
|
作者
Opanowicz, A
机构
关键词
D O I
10.12693/APhysPolA.89.635
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
Different characteristics of thermally stimulated luminescence and conductivity in insulator are numerically calculated without the quasi-equilibrium approximation. The results are compared with corresponding results calculated using the quasi-equilibrium approximation. This comparison suggests that the quasi-equilibrium approximation is correct in the low temperature range of the thermally stimulated luminescence and conductivity curves for crystals which have the density of recombination centres higher than 10(13) cm(-3) and the recombination coefficient larger than 10(-12) cm(3) s(-1) or equivalently, for those with the initial free electron lifetime shorter than 10(-1) s. For the high temperature range of the thermally stimulated luminescence and conductivity curves the quasi-equilibrium approximation gives correct results if the recombination centres density is higher than 10(14) cm(-3) and the recombination coefficient is larger than 10(-12) cm(3) s(-1) or if the initial free electron lifetime is shorter than 10(-2) s. The results of this paper show also that the so-called ''first-order'' shape of the thermally stimulated luminescence and conductivity curves is typical not of the weak retrapping only, but it can be obtained also for the strong retrapping.
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页码:635 / 648
页数:14
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