  This paper reports conduction mechanism in a-\sbse over a wide range of
temperature (238K to 338K) and frequency (5Hz to 100kHz). The d.c. conductivity
measured as a function of temperature shows semiconducting behaviour with
activation energy $\Delta$E= 0.42 eV. Thermally induced changes in the
electrical and dielectric properties of a-\sbse have been examined. The a.c.
conductivity in the material has been explained using modified CBH model. The
band conduction and single polaron hopping is dominant above room temperature.
However, in the lower temperature range the bipolaron hopping dominates.
