Conductivity change of Au/p-CdTe/Au as a function of the temperature gradient

摘要

Single crystals of p-CdTe with two Au contacts demonstrate large changes of conductivity depending on the temperture gradient has been shown [Vackova et al., Proc, XVI Int. Conf. on Thermoleectric, August 1997, Dresden, Germany]. In this work the mechanisms explaining this dependence, mainly the charge redistribution due to the temperature grdient, are discussed. The change of conductivity reaches up to 30/100 at the temperature gradient of 10 K/cm depending on te acceptor activation energy. This effect has to be taken into account in proposing semiconductor devices on p-CdTe.