Volume-8 , Issue-2 , Jun 2021, ISSN 2348-6341 Go Back

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  Optical, Electrical, Structural and morphological Properties of Electrodeposited CdMnS Thin Film Semiconductors for Possible Device Applications

  Nwori, A.N., Ezenwaka L.N. Otti, E.I. Okereke, N.A., Okoli, N.L.

  Research Paper | Journal-Paper (JPCM)

  Vol.8 , Issue.2 , pp.1-11, Jun-2021

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  Abstract
  Chalcogenide thin film semiconductors of cadmium manganese sulphide (CdMnS) have been successfully deposited on conductive florine doped tin oxide (FTO) glass substrate using an electrodeposition technique. Cadmium sulphate (CdSO4.H2O), Manganese sulphate (MnSO4.H2O) and Thiourea (CH4N2S) were precursors used for sources of cadmium (Cd), manganese (Mn) and sulphur (S) ions respectively. The deposited thin films were characterized to determine their optical, electrical, structural and morphological properties for possible applications. The results of the characterizations showed that the optical absorbance, absorption coefficient are high throughout the ultra-violet (UV), visible (VIS) and near infrared (NIR) regions while the optical conductivity is high in the VIS and NIR regions. The percentage reflectance of the deposited films is generally low. The band gap energy is wide and within the range of 3.5 eV - 3.6 eV. The maximum value of the electrical conductivity of the films is obtained if the thin films have thickness is in the range of 200 – 250 nm and deposited with Mn2+ concentration of 0.10 M. The structural properties revealed that the deposited films are crystalline and possessed hexagonal structures while the scanning electron microscopy (SEM) images indicated that the films have particle sizes which are mostly irregular in shapes. The observed properties in these films indicate that the films can serve as good materials for many applications such as; photovoltaic cells, anti-reflection coatings, photo thermal applications and for many other electronic devices that require high temperatures

  Key-Words / Index Term
  Cadmium manganese sulphide (CdMnS), Electrical properties, Optical properties, Photo-voltaic Cell, X-ray diffraction (XRD)

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  Citation
  Nwori, A.N., Ezenwaka L.N. Otti, E.I. Okereke, N.A., Okoli, N.L., "Optical, Electrical, Structural and morphological Properties of Electrodeposited CdMnS Thin Film Semiconductors for Possible Device Applications," Journal of Physics and Chemistry of Materials, Vol.8, Issue.2, pp.1-11, 2021