Abstract
By a special preparation of Cu- doped GaP p +n diodes Fagerström and Grimmeiss [1] obtained a strong well-resolved TSC peak at about 171 K, whereas other authors [2–4] observed a spectrum of up to eight superpositioned peaks, thus arising difficulties for the unambiguous evaluation of separate deep level parameters and monitoring the corresponding centers. Since the value of the activation energy used by F.-G. is not consistent with the TSC curve shape a possibility is discussed to estimate activation energy from each single TSC heating run. In consequence further important parameters, characterising the deep centers: emission rate and capture cross section, change by several orders. It is shown how these parameters can be determined directly with the help of the experimental observables: peak position T and halfwidth δ.
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