Author:

Keywords:

Films, Science & Technology, Physical Sciences, Physics, Condensed Matter, Physics, 0204 Condensed Matter Physics, 0912 Materials Engineering, 1007 Nanotechnology, Fluids & Plasmas, 4016 Materials engineering, 4018 Nanotechnology, 5104 Condensed matter physics

Abstract:

Thin films of amorphous selenium have been prepared by thermal evaporation. DC conductivity measurements were carried out on these films in the temperature range between 208 and 322 K. Above room temperature, the dark conductivity is thermally activated with activation energy Eσ = 1.05 ± 0.08 eV. For temperatures below 285 K, an increase in the dark current is observed, which is interpreted in terms of a shift of the Fermi level that makes more states available for a hopping process.