Abstract
Conductivity, Hall effect, and transverse magnetoresistance were measured on evaporated polycrystalline CdSe films between 80 and 700 K. The mobility calculated from magnetoresistance is different in magnitude and temperature dependence from that calculated from conductivity and Hall effect, since the latter one is not only determined by the scattering mechanisms but also by the numbers and properties of potential barriers at crystallite boundaries. The analysis of magnetoresistance shows that at low temperatures the electron mobility is controlled by impurity scattering and at high temperatures by optical phonon scattering. Scattering by ionized impurities considerably influences the mobility at room temperature.
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