Synthesis and processing of CdS/ZnS multilayer films for solar cell application

Oladeji, Isaiah O.; Chow, Lee

doi:10.1016/j.tsf.2004.08.114

Cited by 123 publications

(63 citation statements)

References 16 publications

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“…In the case of the sequential decomposition of Cd(Et 2 dtc) 2 followed by Zn(Bu 2 dtc) 2 (Figure 1d), the XRD peaks showed a large shift toward higher diffraction angle with respect to those of CdS. The shift of the peaks was attributed to the change in the lattice parameters by formation of Cd x Zn 1Àx S. 4 This was also supported by a report that stacked CdS and ZnS layers formed Cd x Zn 1Àx S by annealing at 400 C. 15 The lattice parameter c estimated from the peaks in Figure 1d Cd following the Vegard's law. Therefore, the Zn mole fraction expected from the lattice parameter can be estimated to be 0.5.…”

supporting

confidence: 57%

Synthesis of CdxZn1−xS Nanoparticles in Porous Vycol Glass by Reaction of Single-source Precursors

Wada¹,

Niinobe²,

Kaneko³

et al. 2005

Chemistry Letters

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supporting

confidence: 57%

Synthesis of CdxZn1−xS Nanoparticles in Porous Vycol Glass by Reaction of Single-source Precursors

Wada¹,

Niinobe²,

Kaneko³

et al. 2005

Chemistry Letters

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“…where A is a constant [16][17][18][19]. If the compound scatters in a perfectly diffuse manner, K becomes equal to 2α.…”

Section: Resultsmentioning

confidence: 99%

Synthesis, characterization and luminescence properties of long afterglow Phosphor Ba4Al14O25:Eu,Dy

2010

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“…On the other hand, CBD-ZnS semiconductor films have demonstrated to possess interesting properties to be used in different fields of science, such as solar energy conversion. 23,24 In recent years, different papers related to the ZnS material [25][26][27][28][29] have been written about their interesting properties. For example, Lee et al 25 report uniformity and smoother morphology properties of CBD-ZnS films for improving solar cells devices.…”

mentioning

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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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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Synthesis and processing of CdS/ZnS multilayer films for solar cell application

Cited by 123 publications

References 16 publications

Synthesis of CdxZn1−xS Nanoparticles in Porous Vycol Glass by Reaction of Single-source Precursors

Synthesis of CdxZn1−xS Nanoparticles in Porous Vycol Glass by Reaction of Single-source Precursors

Synthesis, characterization and luminescence properties of long afterglow Phosphor Ba4Al14O25:Eu,Dy

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

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