Physical characteristics of al/n-cds thin-film schottky diode at high temperatures

Abstract

Cadmium sulphide (CdS), a member of group II-VI semiconductors, is a promising material based on its applications. The present investigations describe the preparation and electrical characterization of CdS thin films. CdS thin films with thickness of 1000 nm were deposited by vacuum evaporationat room temperature. Characteristic parameters of Schottky junctions formedby a thermal vapor deposition of 500 nm of Al films on pre-coated CdS glasssubstrates were obtained experimentally from the I-V characteristics in thetemperature range of 303-393 K. Diode parameters, such as the zero-bias barrier height φb0, flat band barrier height φbf, ideality factor η, and series resistance RS were investigated using the thermionic emission method. © IJTech 2013.