Studies on bulk and thin films of lead (Pb) modified chalcogenide glasses

Abstract

Chalcogenide glasses contain group VI (A) elements of the periodic table such as Sulphur, Selenium or Tellurium as their major constituent. Chalcogenide glasses are known to be p-type semiconductors. It was reported that Ge-Se glasses containing appropriate amounts of Bismuth (Bi) or Lead (Pb) exhibited n-type conduction. Bi modified chalcogenide glasses have received more attention in the literature as compared to Pb modified chalcogenide glasses. In this thesis, a systematic study of the electrical, thermal and optical properties of bulk and thin films of Pb modified chalcogenide glasses is reported. The basic interest in chalcogenide glasses exhibiting p-type to n-type charge carrier reversal and the general lack of information on thin films of these glasses are the motivations behind this work.

(Abstract Not Available)