Properties of CdS thin films growth by CBD as a function of thiourea concentration

Abstract

We present in this work a study of the growth kinetics and the optical properties of CdS thin films as processed by the Chemical Bath Deposition (CED) technique. For the deposition we used cadmium chloride, ammonium chloride, ammonium hydroxide and thiourea in suitable proportions, the deposition was carried out on Suo2: F conducting glass. The growth kinetics is relativeIy fast when the quantity of thiourea is increased in the solution of deposition. Such films show an average transmittance of 90 % and a mean band gap energy of 2.36 eV. With this characteristics, the films can in principle be used like the window material in the CdS/CdTe solar cells.

A review on Physical Properties of CdS Thin Film

“…Chemical bath deposition method was used to make CdS thin films [11]in 2004. The deposition time and bath concentration were used to adjust the thickness of the films.…”

“…Cds Cadmium Sulfide is the important semiconductor materials [11,12].In the group of (II-VI) the physical properties are:…”

“…In 2004 Quiebras, et al, studied Physical characteristics of deposited CdS thin films at different thicknesses by chemical bath deposited (CBD), from x-ray diffraction they show that the structure is hexagonal .They also studied the electrical behavior in the dark and in the light The band gap is 2.47 eV, and the material has acceptable properties for usage as a window layer in solar applications [11].…”

“…Semiconductors that are extremely pure can become insulator [10]. Cds Cadmium Sulfide is the important semiconductor materials [11,12]. As indicated in the periodic table, the group of (II-VI) [13].…”

Nanocrystalline Cadmium sulfide (CdS) thin film synthesized at different dip times by chemical bath deposition technique

“…Various deposition techniques such as electrodeposition (Bastol et al, 1985), spray pyrolysis (Chamberlain and Skarman, 1966), successive ionic layer adsorption reaction (Partha and Ayan, 2014) and a new chemical bath technique under rotation (Oliva-Avilés et al, 2010). Among these various techniques, the CBD is the most successful method used in the production of uniform, adherent, and reproducible large-area thin films for solar related application (Mane and Lokhande, 2000;Ximello-Quiebras et al, 2006). Thus, the deposition rate can be modified not only by changing the chemical reagents concentrations, or with the type of bath agitation used during deposition or by changing the bath temperature, it can also be modified by deposition time.…”