INVESTIGATION OF NON-1ST-ORDER TSC PEAKS WITH NONCONSTANT RECOMBINATION LIFETIME

Thermally stimulated current peaks corresponding to saturated (complet ely filled) and non-saturated (partially filled) non-first-order therm oluminescence with non-constant recombination lifetime are investigate d. The variation of peak temperature and peak shape are studied as tra p filling continues to increase until saturation. A set of expressions based on the shape of the peak has been derived, which in principle c an be used to evaluate activation energy of such thermally stimulated current peaks. The coefficients involved in the expression are present ed for certain kinetic orders, namely 1.5, 2.0 and 2.5. The validity o f this peak shape method as well as the method of various heating rate s have been checked by considering some numerically computed thermally stimulated current peaks.