학술논문
Optical absorption and electrical conductivity of flash evaporated CuGaTe2thin films
Document Type
Article
Author
Source
Pramana; March 1986, Vol. 26 Issue: 3 p269-276, 8p
Subject
Language
ISSN
03044289
Abstract
The optical absorption edge of CuGaTe2thin films in the energy range 1 to 2·3 eV was studied. The characteristic band gaps were found to be 1·23 eV and 1·28 eV whereas the acceptor ionization energy was 170 meV. Electrical conductivity measurements were carried out in the temperature range 300–550 K and two acceptor states with ionization energies 400 meV and 140 meV were found. The origin of acceptor states is explained based on covalent model.