scholarly journals Influence of Bath Temperature, Deposition Time and S/Cd Ratio on the Structure, Surface Morphology, Chemical Composition and Optical Properties of CdS Thin Films Elaborated by Chemical Bath Deposition

2011 ◽  
Vol 02 (09) ◽  
pp. 1073-1082 ◽  
Author(s):  
F. Ouachtari ◽  
A. Rmili ◽  
B. Elidrissi ◽  
A. Bouaoud ◽  
H. Erguig ◽  
...  
Keyword(s):  
Thin Films ◽  
Optical Properties ◽  
Chemical Composition ◽  
Surface Morphology ◽  
Chemical Bath Deposition ◽  
Deposition Time ◽  
Bath Temperature ◽  
Structure Surface ◽  
Cds Thin Films ◽  
Temperature Deposition

Properties of CdS Thin Films Grown by Chemical Bath Deposition as a Function of Bath Temperature

2009 ◽  
Vol 609 ◽  
pp. 243-247 ◽  
Author(s):  
H. Moualkia ◽  
S. Hariech ◽  
M.S. Aida
Keyword(s):  
Thin Films ◽  
Optical Properties ◽  
Band Gap ◽  
Chemical Bath Deposition ◽  
Bath Temperature ◽  
Band Gap Energy ◽  
X Ray Diffraction ◽  
Glass Substrates ◽  
Cds Thin Films ◽  
Direct Band

The present work deals with the preparation and characterization of cadmium sulfur (CdS) thin films. These films are prepared by chemical bath deposition on the well cleaned glass substrates. The thickness of the samples was measured by using profilometer DEKTAK, structural and optical properties were studied by X-ray diffraction analysis, and UV-visible spectrophotometry. The optical properties of the films have been investigated as a function of temperature. The band gap energy and Urbach energy were also investigated as a function of temperature. From the transmittance data analysis the direct band gap ranges from 2.21 eV to 2.34 eV. A dependence of band gap on temperature has been observed and the possible raisons are discussed. Transmission spectra indicates a high transmission coefficient (75 %). Structural analysis revealed that the films showed cubic structure, and the crystallite size decreased at a higher deposition temperature.

scholarly journals Effect some Factors on the Structural Properties of the CdS Thin Films Prepared by Chemical Bath Deposition

2016 ◽  
Vol 64 ◽  
pp. 1-10
Author(s):  
Fatma Salamon
Keyword(s):  
Thin Films ◽  
Chemical Bath Deposition ◽  
Deposition Time ◽  
X Ray Diffraction ◽  
Hexagonal Crystal ◽  
X Ray ◽  
Glass Substrates ◽  
Cds Thin Films ◽  
Temperature Deposition ◽  
Xrd Patterns

CdS thin films were prepared by chemical bath deposition technique (CBD) onto the glass substrates at different conditions of preparation. The obtained samples are studied by X-Ray diffraction (XRD). The XRD patterns of CdS samples revealed the formation with a hexagonal crystal structure P36mc, and the clear effect of the concentration of thiourea, cadmium sulfide, NaOH, time and temperature deposition, and annealing temperature, on the structure of the prepared thin films. through the study, we found that the samples have preferred orientation along [002], also the thickness of thin films decrease with deposition time after certain value, with the appearance of free cadmium. It has been found that the 200°C is the best temperature for annealing to improve the other structural and physical properties of films.

scholarly journals In Situ Low-Temperature Chemical Bath Deposition of CdS Thin Films without Thickness Limitation: Structural and Optical Properties

2018 ◽  
Vol 2018 ◽  
pp. 1-12 ◽  
Author(s):  
Mouad Ouafi ◽  
Boujemaâ Jaber ◽  
Lahoucine Atourki ◽  
Najwa Zayyoun ◽  
Ahmed Ihlal ◽  
...  
Keyword(s):  
Thin Films ◽  
Low Temperature ◽  
Chemical Bath Deposition ◽  
Deposition Time ◽  
Annealing Treatment ◽  
Bath Temperature ◽  
Structural Quality ◽  
Synthesis Parameters ◽  
Cds Thin Films ◽  
Cds Films

In this work, thin CdS films have been deposited using the chemical bath deposition technique (CBD). Different synthesis parameters, such as number of runs, deposition time, and postannealing temperature, are studied and optimized in order to avoid the supersaturation phenomenon and to achieve a low-temperature growth. CdS thin films, of cubic structure, oriented along the (111) direction with homogenous and smooth surface, have been deposited by using the CBD growth process without any annealing treatment. Based on a set of experimental observations, we show that the solution saturation phenomenon can be avoided if the deposition is performed in several runs at a short deposition time. Throughout the CBD technique, it is then possible not only to overcome any film thickness limitation but also to grow the CdS films in a single technological step at a low temperature and without any postdeposition annealing treatment. CdS films with excellent structural quality and a controllable thickness are obtained when the deposition bath temperature is fixed at 65°C. In addition, deposited films exhibit an optical transmittance ranging from 70 to 95% depending on the synthesis parameters, with band gap energy around 2.42 eV. The process developed in this work might be useful for depositing CdS films on flexible substrates.

Effects of pH Value on Performance of CdS Films with Chemical Bath Deposition

2012 ◽  
Vol 557-559 ◽  
pp. 1941-1944 ◽  
Author(s):  
Li Mei Zhou ◽  
Xiao Fei Hu ◽  
Su Mei Wu
Keyword(s):  
Thin Films ◽  
Optical Properties ◽  
Surface Morphology ◽  
Chemical Bath Deposition ◽  
Ph Value ◽  
Measurement Instrument ◽  
Vital Role ◽  
Height Measurement ◽  
Glass Substrates ◽  
Cds Thin Films

CdS thin films were prepared by chemical-bath deposition (CBD) from a bath containing thiourea, acetic cadmium, ammonia and ammonium acetate in aqueous solution onto glass substrates at 80°C with stirring. The influence of pH value on the surface morphology and optical properties of the CdS thin films was investigated. Step height measurement instrument, scanning electron microscopy (SEM), X-ray diffraction (XRD), spectrophotometer and digital four-point probe resistance measurement were used to characterize their thickness, surface morphology, crystal structure, electrical and optical properties. Uniform CdS thin films were obtained when pH=11.6. There are obvious diffraction peaks at 26.04° when pH is 11.6. The transmittance increases as the pH values increase. The experiment show that pH value play a vital role in the properties of the CdS thin films.

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