Publication: A comparative study of CdS thin films grown on ultra-thin glass substrates by RF magnetron sputtering and chemical bath deposition
Date
2021
Authors
Doroody C.
Rahman K.S.
Rosly H.N.
Harif M.N.
Isah M.
Kar Y.B.
Tiong S.K.
Amin N.
Journal Title
Journal ISSN
Volume Title
Publisher
Elsevier Ltd
Abstract
The structural, morphological and optoelectrical characteristics of cadmium sulfide (CdS) thin films grown on ultra-thin glass substrates via Radio Frequency (RF) magnetron sputtering and chemical bath deposition (CBD) have been explored in this study. CdS thin films were characterized using the X-ray Diffraction (XRD), Field Emission Scanning Electron Microscopy (FESEM), Atomic Force Microscopy (AFM), UV�Vis spectrophotometer and Hall effect measurement system. As obvious from XRD investigation, the stable hexagonal wurtzite crystalline structure with (002) preferential orientation was resulted from both deposition methods. FESEM study demonstrated uniform grain structure for the sputtered films. Compositional analysis confirmed that S/Cd ratio is 0.28 for the sputtered films and 0.20 for the CBD films. AFM study exhibited spherical crystal surface formation, hills and valleys for CBD films. The optical analysis showed a band gap of 2.40 eV and 2.32 eV for the sputtering and the CBD methods, respectively. Hall effect analysis recorded carrier concentration and resistivity in the order of 1013 cm?3 and 104 ? cm, respectively. The experimental results recommend that the CdS thin films grown by the sputtering might be favourable as the window layer for solar cell application. � 2021 Elsevier Ltd
Description
Atomic force microscopy; Cadmium sulfide; Chemical analysis; Energy gap; Field emission microscopes; Glass; Hall effect; II-VI semiconductors; Magnetron sputtering; Scanning electron microscopy; Substrates; X ray diffraction; Zinc sulfide; Atomic-force-microscopy; Cadmium sulphide thin films; Chemical-bath deposition; Deposition films; Field emission scanning electron microscopy; Radio-frequency-magnetron sputtering; Sputtered films; Thin glass substrates; Ultra-thin; Ultra-thin glass; Thin films