ZnSe BUFFER LAYER DEPOSITION FOR SOLAR CELL APPLICATION.

Abstract

Zinc selenide (ZnSe) buffer have been deposited by a simple and inexpensive chemical bath deposition (CBD) technique. They have been characterized by optical microscope, spectrophotometer and four point probe. The optical band gaps of the films were estimated to be in the range of 2.50–2.70eV. The optical absorption data shows that the films have high absorbance in the ultraviolet range of 0.36–0.45 microns and low absorbance in the visible and infrared regions. Electrical properties show that ZnSe films have high resistance. The thin film would therefore make good buffer layer for solar cells.