Effect of deposition time on morphology and optical properties of nanocrystalline CeO2/CdS thin films grown by chemical bath deposition

2019 ◽  
Author(s):  
Biswajyoti Mohanty ◽  
J. Nayak
Keyword(s):  
Thin Films ◽  
Optical Properties ◽  
Chemical Bath Deposition ◽  
Deposition Time ◽  
Cds Thin Films

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.

Morphological and Optical Properties of CdS Nano-Crystalline Thin Films by Chemical Bath Deposition

2013 ◽  
Vol 537 ◽  
pp. 144-149 ◽  
Author(s):  
Yi Liu ◽  
Ai Xiang Wei ◽  
Xiao Dong Lin
Keyword(s):  
Thin Films ◽  
Optical Properties ◽  
Chemical Bath Deposition ◽  
Ammonia Concentration ◽  
Average Value ◽  
Nano Crystalline ◽  
Cds Thin Film ◽  
Visible Spectra ◽  
Cds Thin Films ◽  
Chloride Hydrate

CdS thin films were prepared by chemical bath deposition (CBD) at different ammonia concentration and different temperature using cadmium chloride hydrate, thiourea, ammonium chloride, ammonia and deionized water as precursors. The morphology structure and the optical properties of CdS thin films were characterized by scanning electron microscope (SEM), ultraviolet-visible spectra and spectroscopic ellipsometry. The results indicated that CdS thin film could be grown when ammonia concentration at the range of 0.4-1.0 mol /L and in the temperature range of 50 °C -80 °C. Within 600-980 nm wavelength，the average value of the refractive index was found to be 1.70 and the extinction coefficient was less than 0.08.

Preparation of Polycrystalline Cds Thin Films by Chemical Bath Deposition

1995 ◽  
Vol 410 ◽  
Author(s):  
Eun A Lee ◽  
Bum-Soo Kim ◽  
Sung Ho Shin ◽  
Jung Il Park ◽  
Kwang Ja Park
Keyword(s):  
Thin Films ◽  
Heat Treatment ◽  
Optical Properties ◽  
Chemical Bath Deposition ◽  
Reaction Temperature ◽  
Ammonium Acetate ◽  
Cadmium Acetate ◽  
Structural And Optical Properties ◽  
Cds Thin Films

ABSTRACTWe prepared CdS thin films from a solution containing cadmium acetate, thiourea, ammonia, and ammonium acetate. We varied fabrication conditions such as the concentrations of reactants, reaction temperature, and heat treatment, to investigate the changes in structural and optical properties of the film. Effects of substrate on the properties were also investigated.

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.

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