Author/Authors :
Yılmaz, Koray Pamukkale University - Arts and Science Faculty - Department of Physics, Turkey , Gölcür, Deniz Pamukkale University - Arts and Science Faculty - Department of Physics, Turkey
Title Of Article :
Investigations on Structural, Electrical and Optical Properties of Polycrystalline CdInTe Thin Films Grown by Thermal Evaporation
Abstract :
In this study, properties of thermally evaporated polycrystalline CdInTe thin films were investigated. The surface morphology, composition and crystal structure of the films were determined by means of SEM, EDXA and XRD analysis. Temperature dependent Hall effect measurements were carried out in the temperature range of 200-400 K. In the whole temperature region, the dominant transport mechanism of the films was found to be thermionic emission of the carriers over the grain boundaries. The room temperature conductivity, mobility and electron concentration values were found to be 1.8x10-2 (Ω.cm)-1, 50 cm2V-1s-1 and 1.1x10-15 cm-3, respectively. The mobility-temperature dependence showed that ionized impurity, neutral donor impurity and acoustic phonon scattering mechanisms were effective over the low (216-256 K), intermediate (256-317 K) and high temperature (317-357 K) regions, respectively. The optoelectronic properties of the films were also investigated by absorption in 190-1100 nm wavelength region and photoconductivity measurements in 80-400 K temperature range.
NaturalLanguageKeyword :
Semiconductors , thin films , thermal evaporation , Hall effect
JournalTitle :
Süleyman Demirel University Faculty of Arts and Science Journal of Science
