Electrical conductivity and thermoelectric power of a-Se80-xGa20Tex (x = 0, 5, 10, 15 and 20) thin films

Authors
Khan, ZH Zulfequar, M Ilyas, M Husain, M
Citation
Zh. Khan et al., Electrical conductivity and thermoelectric power of a-Se80-xGa20Tex (x = 0, 5, 10, 15 and 20) thin films, ACT PHY P A, 98(1-2), 2000, pp. 93-102
Citations number
43
Categorie Soggetti
Physics
Journal title
ACTA PHYSICA POLONICA A
ISSN journal
05874246 → ACNP
Volume
98
Issue
1-2
Year of publication
2000
Pages
93 - 102
Database
ISI
SICI code
0587-4246(200007/08)98:1-2<93:ECATPO>2.0.ZU;2-C
Abstract
The dc conductivity and thermoelectric power of a-Se80-xGa20Tex (x = 0, 5, 10, 15 and 20) thin films were reported in the present work. The free charg e carrier concentration was calculated with the help of de conductivity and thermoelectric power measurements. The calculated values of free charge ca rrier concentration were used to evaluate the free charge carrier mobility from which grain boundary potential was evaluated. The results are interpre ted in terms of small polaron hopping, the structure of Se-Te and the grain boundary potential barrier.