Cadmium sulfide thin films growth by chemical bath deposition

Abstract

Cadmium sulfide (CdS) thin films have been prepared by a simple technique such as chemical bath deposition (CBD). A set of samples CdS were deposited on glass substrates by varying the bath temperature from 55 to 75 °C at fixed deposition time (25 min) in order to investigate the effect of deposition temperature on CdS films physical properties. The determination of growth activation energy suggests that at low temperature CdS film growth is governed by the release of Cd2+ ions in the solution. The structural characterization indicated that the CdS films structure is cubic or hexagonal with preferential orientation along the direction (111) or (002), respectively. The optical characterization indicated that the films have a fairly high transparency, which varies between 55% and 80% in the visible range of the optical spectrum, the refractive index varies from 1.85 to 2.5 and the optical gap value of which can reach 2.2 eV. It can be suggested that these properties make these films perfectly suitable for their use as window film in thin films based solar cells.

Influence of Bath Temperature on Structural, Optical and Electrical Properties of Cadmium Sulfi de Thin Films Prepared by Chemical Bath Deposition

“…The decrease of fi lm thickness after 80 °C was due to the dissolution of unstable nuclei adsorbed on the fi lm surface, or after reaching a certain thickness fi lm starts to peel off. A similar type of observation was also reported in literature by few investigators [2][3][4] Оригинальные статьи Original articles served that fi lm thickness was increased for bath temperature in the range, 55-75 °C and then decreased in the range of 75-85 °C whereas Hariech et al [4] reported that the thickness was increased for temperature that varied from 55 to 65 °C and then decreased when the temperature varied in the range, 65-75 °C. Fig.…”

Thermally Evaporated Copper Iodide Hole-Transporter for Stable CdS/CdTe Thin-Film Solar Cells

“…FTO-coated substrates (Sigma-Aldrich, St. Louis, MI, USA) were cleaned as reported elsewhere [ 44 ]. Window n-CdS layer of 80 nm thickness was deposited on cleaned FTO substrates by the chemical bath deposition technique (CBD) at 90 °C as reported elsewhere [ 44 , 45 , 46 , 47 ]. The CBD reaction solution contains de-ionized water, cadmium acetate, ammonium acetate, and thiourea.…”

Strategies for the Development of Metallic‐Nanoparticle‐Based Label‐Free Biosensors and Their Biomedical Applications

“…CBD is composed of two steps: nucleation and particle growth. In the nucleation step, the association and dissociation of molecules lead to the particle growth step . The SiO 2 substrate was modified by prepared ZnO nanorods, which were doped with AuNPs for increased sensitivity and offering a surface for the attachment of probe DNA.…”

“…In the nucleation step, the association and dissociation of molecules lead to the particleg rowth step. [171] The SiO 2 substrate was modified by prepared ZnO nanorods, which were doped with AuNPs fori ncreaseds ensitivity and offering as urfacef or the attachment of probe DNA. The capacitance value of the electrode changed after immobilizationo ft he probe DNA on the electrode and hybridization of target DNA to probe DNA.…”