Electrodeposited CdS thin films and their application in CdS/CdTe solar cells

Abstract

Technologically the electrochemical deposition method through the influence of potential, temperature, pH and composition of reactants offers excellent control lover the properties of semiconductors Using a potentiostatic approach, the films of CdS were deposited on t i n oxide coated glass substrates at merent conditions. The films were found to be smooth, uniform and adherent 114th a small grain size. X-ray &tion analysis indicated a hexagonal phase rather than the cubic phase.Electrochemica1 deposition parameters were studied to

Piezo-photovoltaic coupling in CdS-based thin-film photovoltaics

“…1, 5,7,24 In the hexagonal phase, a preferential orientation ͑002͒ ͑along the Z axis, called also the c-axis in Fig. 1, 5,7,24 In the hexagonal phase, a preferential orientation ͑002͒ ͑along the Z axis, called also the c-axis in Fig.…”

“…It is known indeed that various deposition techniques create CdS films in either predominantly or considerable concentration of wurtzite phase, [5][6][7][8] which is piezo-active; the alternative cubic phase is not piezo-active and can be present as a part of a mixture. The piezoelectric coupling factor ͓the ratio of conserved ͑elastic͒ over transformed ͑electrical͒ en-ergy͔ ͉k͉ տ 0.1 in CdS is several times greater in absolute value than that of the crystalline quartz, a known "classical" piezoelectric.…”

Electrochemical synthesis of Au@semiconductor core–shell nanocrystals guided by single particle plasmonic imaging

“…As previously reported, under pH lower than 2, S 2 O 3 2À would be decomposed and form colloidal sulfur. 32 Therefore, the electrodeposition reaction of CdS is dependent on pH. Here, in the coating of CdS, pH 3.0 H 2 SO 4 solution was applied containing 0.1 M CdCl 2 and 10 mM Na 2 S 2 O 3 at room temperature.…”

“…The reaction mechanism of CdS deposition involves a 2electron transfer which is as shown below. 32,35,36 Cd 2+ + S 2 O 3 2À + 2e À / CdS + SO 3…”

pH Effect on the Deposition of CdS on ZnO and SnO2:F Substrates by CBD Method

“…CdS thin films have been prepared by several methods such as Close Spaced Sublimation (CSS) [3], Electrochemical Deposition [4], and Chemical Bath Deposition [5]. The latter appears to be the best technique for depositing cadmium sulphide with the best optical, electrical and morphological properties for the fabrication of solar cells.…”