Effect of deposition variables on properties of CBD ZnS thin films prepared in chemical bath of ZnSO4/SC(NH2)2/Na3C3H5O7/NH4OH

Liu, Weilong; Yang, Chang-Siao; Hsieh, Shu-Huei; Chen, W.J.; Fern, Chi-Lon

doi:10.1016/j.apsusc.2012.09.174

Cited by 31 publications

(25 citation statements)

References 19 publications

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“…Finally, Chen et al 43 studied the effect of the deposition variables on the properties of CBD-ZnS films, estimating an E a value of 59.8 kJ/mol. As can be noted from the literature, different E a values have been reported and consequently, different growth mechanisms can be proposed.…”

Section: Resultsmentioning

confidence: 99%

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Role of Thiourea in the Kinetic of Growth of the Chemical Bath Deposited ZnS Films

González-Panzo

Várguez

Oliva

2014

J. Electrochem. Soc.

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ZnS films were deposited onto glass substrates by the chemical bath technique at temperatures from 60 to 90 • C. Zinc chloride, potassium hydroxide, ammonium nitrate, and thiourea were used as chemical components. According to the species distribution diagrams, the concentration of the chemical components were maintained constant except for thiourea whose concentration is required to decrease when the bath temperature increases, in order to maintain constant the Zn(O H) 2− 4 /H S − ions concentration. To investigate the kinetic of growth of the ZnS films, their thicknesses were measured as a function of deposition time and bath temperature. The activation energy value estimated for the growing process was E a = 44.9 kJ/mol which is typical for chemical reactions. The mean value of the bandgap energy of the films was 3.67 eV with optical transmittances up to 80% for all bath temperatures. The rms-roughness of the deposited films was observed to decrease when the bath temperature increases. Results of X-ray diffraction analysis on deposited films reveal a cubic (111) 25 report uniformity and smoother morphology properties of CBD-ZnS films for improving solar cells devices. Investigations of some physical properties on the CBD-ZnS films were done by Gümüs et al. 26 and Ben-Nasr et al. 27 Gümüs et al. discuss the polycrystalline structure, electrical resistivity, carrier density, and the bandgap energy of the ZnS films as a function of the deposition parameters (deposition time, bath temperature, and concentrations of the chemical reagents). Ben-Nasr et al, study the effect of the pH and the annealing process on the structural, morphological and electronic properties of the ZnS films. Additionally, the effect of the bath temperature and concentrations of the chemical components on the growth rate, crystalline structure and optical properties of the CBD-ZnS films were investigated by Sundara. 28 An interesting work for understanding the process to control the deposition of ZnS and CdS materials and their chemical differences were reported by O'Brien et al. 29 As can be seen from the literature, CBD-ZnS films have recently received more attention due to their attractive properties that can be controlled during the deposition process under determined experimental conditions. In the CBD technique, deposition of metal-chalcogenide occurs in the surface of substrate immersed in an aqueous solution containing both the metallic and the chalcogenide ions. The well-known deposition mechanism to describe the chemical deposition is via the solubility z E-mail: isjuv.gp@gmail.com product K sp (for ZnS at 25 o C, K sp = 3 × 10 −25 ). 30 Thus, the material deposition occurs when the ionic product of both metallic and chalcogenide ions exceeds the solubility product K sp . They are chemically attached in the aqueous medium and precipitate on the substrate surface producing the metal-chalcogenide film. For the CBD technique is common to require, besides the metallic and non-metallic ions, complementary chemical reagents used as comp...

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Section: Resultsmentioning

confidence: 99%

“…1. 28,[39][40][41][42][43] where the rate-determining step in the deposition process is discussed according to the activation energy value estimated. For example, Sundara et al 28 reported the effect of bath concentration and temperature on the growth of CBD-ZnS films.…”

Section: Resultsmentioning

confidence: 99%

Role of Thiourea in the Kinetic of Growth of the Chemical Bath Deposited ZnS Films

González-Panzo

Várguez

Oliva

2014

J. Electrochem. Soc.

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“…Various methods have been used to prepare ZnS thin films, such as magnetron sputtering [6], plasma-assisted metalorganic chemical vapor deposition [7], chemical bath deposition (CBD) [1][2][3][4][8][9][10][11][12][13][14][15][16][17][18][19][20][21][22], electro-deposition [23] and pulsed-laser deposition [24]. Among these methods, the CBD technique is usually employed because it is very simple, cost effective, reproducible and can be used to deposit large area at moderate temperature.…”

Section: Introductionmentioning

confidence: 99%

“…In the chemical bath deposition for the ZnS thin films, there are many parameters to be controlled, including Zn source, S source, complexing agent [25][26][27], pH of the solution [3,8,12], bath temperature [13], stirring speed [22]and deposition time [1,3,11,14,15,16,28,29].…”

Section: Introductionmentioning

confidence: 99%

Effects of deposition time in chemically deposited ZnS films in acidic solution

et al. 2015

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“…It can improve the spectral response in short wave range, so that it can improve the short circuit current and photoelectric conversion efficiency [5] . Unfortunately, the crystallinity of ZnS thin film is not as good as CdS thin film [6,7] . The conversion efficiency of thin film solar cell using ZnS buffer layer is not as high as that using CdS buffer layer.…”

Section: Introductionmentioning

confidence: 99%

Crystalline Structure and Optical Properties of Cd1-xZnxS Thin Films Prepared by CBD

Hao¹,

Yang²,

Liu³

et al. 2017

dteees

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Effect of deposition variables on properties of CBD ZnS thin films prepared in chemical bath of ZnSO4/SC(NH2)2/Na3C3H5O7/NH4OH

Cited by 31 publications

References 19 publications

Role of Thiourea in the Kinetic of Growth of the Chemical Bath Deposited ZnS Films

Role of Thiourea in the Kinetic of Growth of the Chemical Bath Deposited ZnS Films

Effects of deposition time in chemically deposited ZnS films in acidic solution

Crystalline Structure and Optical Properties of Cd1-xZnxS Thin Films Prepared by CBD

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