Effects of thiourea concentration on CdS thin films grown by chemical bath deposition for CdTe solar cells

Mendoza-Pérez, R.; Santana, Gregório Mateus; Sastré-Hernández, J.; Morales‐Acevedo, Arturo; Arias-Carbajal, A.; Vigil‐Galán, O.; Alonso, Juan Carlos; Contreras‐Puente, G.

doi:10.1016/j.tsf.2004.11.060

Cited by 47 publications

(15 citation statements)

References 2 publications

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“…4b. The values -2.52 eV (CBD films) and 2.44 eV (CSS films, mean value) -are close to those found in the literature [3][4][5]. The higher bandgap energy represents an advantage for CBD films, since absorption losses in the blue region may be minimized.…”

Section: Sample* Tscsupporting

confidence: 86%

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Microstructural and optical properties of CSS and CBD-CdS thin films for photovoltaic solar cells

et al. 2014

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This work compares the properties of CdS films deposited by CBD and CSS techniques. The influence of the deposition parameters on the properties of the films was investigated. The thickness of CBD films ranged from 80 to 100nm and was affected by the concentration of reactants in the solution. For CSS films, the thickness was controlled in the 100-300nm range, being strongly influenced by the source/substrate temperatures and pressure. Grain size in CSS films was larger than in CBD films. Transmittance of CBD and CSS films ranged from 80 to 90%, but the band gap in CSS films was narrower than in CBD films, which means that CSS films transmit less of the blue part of the solar spectrum than CBD films. However, the growth of CdS films by CSS technique may be advantageous because the CdS/CdTe device could be fully manufactured in the same system.

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Section: Sample* Tscsupporting

confidence: 86%

“…Besides being thin, this film must also be continuous, to prevent short circuit in the cell. The chemical bath deposition (CBD) of CdS films can meet these requirements very well [3][4][5][6]. CBD-CdS films are grown by decomposition of thiourea (the source of S) in an alkaline solution, in the presence of Cd 2+ ions.…”

Section: Introductionmentioning

confidence: 99%

Microstructural and optical properties of CSS and CBD-CdS thin films for photovoltaic solar cells

et al. 2014

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“…Therefore, the dissolution process predominates over the heterogeneous and homogeneous precipitation, resulting in the decrease of film thickness. [20]. The decrease of the films thickness for films prepared with [S]/[Cd] ratio greater than 2.5 is probably due to the dissolution process of the preformed CdS films and the desorption phenomenon, which are predominates over the heterogeneous and homogeneous process.…”

Section: Crystal Structure Determinationmentioning

confidence: 95%

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

Ouachtari¹,

Rmili²,

Elidrissi³

et al. 2011

JMP

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Cadmium sulphide (CdS) thin films were deposited on glass substrates by the chemical bath deposition (CBD) method, using anhydrous cadmium chloride (CdCl 2 ) and thiourea (CS(NH 2 ) 2 ) as sources of cadmium and sulphur ions respectively. The influence of bath temperature (T b ), deposition time (t d ) and [S]/[Cd] ratio in the solution on the structural, morphological, chemical composition and optical properties of these films were investigated. XRD studies revealed that all the deposited films were polycrystalline with hexagonal structure and exhibited (002) preferential orientation. The films deposited under optimum conditions (T b = 75˚C, t d = 60 min and [S]/[Cd] ratio = 2.5) were relatively well crystallized. These films showed large final thickness and their surface morphologies were composed of small grains with an approximate size of 20 to 30 nm and grains grouped together to form large clusters. EDAX analysis revealed that these films were nonstoichiometric with a slight sulphur deficiency. These films exhibited also a transmittance value about 80% in the visible and infra red range.

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“…The CdS thin films deposited by CBD can fulfill these requirements. So the thickness of CdS has much importance for the high efficiency of solar cell [15][16][17]. CdS (CBD) thin films are grown by Cadmium Chloride, Ammonium Nitrate, and Potassium Hydroxide after heating to a specific temperature Thiourea added to start the fabrication process [18][19][20].…”

Section: Introductionmentioning

confidence: 99%

Comparative Study of CdS Nano Films Deposited by Chemical Bath and Close Spaced Sublimation Techniques

Rabeel¹,

Abbas²,

Basit³

et al. 2017

JAN

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Abstract. Thin films of Cadmium Sulfide (CdS) are deposited on microscope glass slides by two techniques, chemical bath deposition (CBD) and close spaced sublimation (CSS). Cadmium Sulfide thin films fabricated by both procedures are characterized by spectrophotometer, scanning electron microscopy (SEM) and X-ray diffraction (XRD). Optical analysis of CdS thin films shows changes in transmittance, refractive Index and energy band gap by using two different techniques. XRD and SEM results show CdS thin film samples with better crystalline structure for close spaced sublimation technique and grain size is also found different for these two methods. CdS thin films fabricated by any of these two methods are good window layers with small thickness and suitable for CdTe/CdS/ITO based solar cells.

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Effects of thiourea concentration on CdS thin films grown by chemical bath deposition for CdTe solar cells

Cited by 47 publications

References 2 publications

Microstructural and optical properties of CSS and CBD-CdS thin films for photovoltaic solar cells

Microstructural and optical properties of CSS and CBD-CdS thin films for photovoltaic solar cells

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

Comparative Study of CdS Nano Films Deposited by Chemical Bath and Close Spaced Sublimation Techniques

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