Abstract
ABSTRACTA simple model (the HTMT model) describing the interaction of excess mobile charge carriers with an exponential bandtail is presented. The new model differs from the commonly used intuitive thermalization (TROK) model only by the definition of the demarcation energy. By comparison of the results of the TROK and the HTMT model with numerical calculation of the interaction it is shown that the HTMT model yields an adequate description, whereas the TROK model does not reproduce the absolute values and also has a deviating time dependence at higher temperatures. The origin of these differences is discussed.
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