Investigation of the Dielectric Permittivity and Electrical Conductivity of Ce{sub 2}S{sub 3}
The rare-earth semiconductor β-Ce{sub 2}S{sub 3} compound samples were synthesized and their dielectric permittivity and electrical conductivity were measured in the temperature range 90–400 K. The energy-band structure has been determined. It is shown that the long-known large electrical parameter spread of semiconductor compounds close in composition to Ce{sub 2}S{sub 3} is explained by the structure of impurity donor levels formed by cerium atoms and ions with different ionization degrees.
36 MATERIALS SCIENCE↗