Influence of Sn and Mn on structural, optical and magnetic properties of spray pyrolysed CdS thin films

ABSTRACT

Sn, Mn-doped CdS thin films were deposited using on glass substrates at 400°C in air atmosphere by chemical spray pyrolysis method. X-ray Diffraction (XRD) of the deposited film exhibits the cubic phase of CdS with a preferred orientation along the (1 1 1) plane. The average crystallite size (D) of pure CdS (18 nm), Sn:CdS (7 nm) and Mn:CdS (6 nm) thin films are calculated. The morphological variations due to the incorporation of Sn and Mn in CdS thin films observed by the Scanning electron microscopy (SEM) images. Incorporation of Sn and Mn confirmed from Energy dispersive X-ray spectroscopy (EDAX). Sn and Mn-doped CdS thin films show a significant blue shift in the absorption spectrum. From the optical studies, The optical bandgap values are 2.43 eV (CdS), 2.28 eV (Mn:CdS) and 2.03 eV (Sn:CdS) respectively. Advanced magnetic saturation and coercivity have been studied for the doped CdS thin films. Consequently, the obtained results will lead to better performance for the optoelectronic and spintronic applications.

KEYWORDS:

• CdS thin films
• XRD
• SEM with EDAX
• VSM studies

Statement of novelty

• Sn, Mn doped CdS thin films were deposited using on glass substrates at 400°C in air atmosphere by chemical spray pyrolysis method.

• Sn and Mn doped CdS thin films show a significant blue shift in the absorption spectrum and also useful in optoelectronic devices.

• Advanced magnetic saturation and coercivity have been studied for the doped CdS thin films and also useful magnetic storage devices.

Disclosure statement

No potential conflict of interest was reported by the authors.

Additional information

Notes on contributors

K. Karthik

K. Karthik did Ph. D work on "Photocatalytic and Biological Studies of Metal Oxide Nanoparticles and Nanocomposites". He has published more than 20 research articles in reputed journals. He has total citations: 210, h-index: 08, i-10 index: 08 (From Google scholar citations: https://scholar.google.co.in/citations?user=hU-0UQsAAAAJ&hl=en). He is a very active member in ResearchGate and his RG score: 57.01, Total Research Interest: 642.8, Recommendations: 11,512, Reads: 49,865 (From ResearchGate: https://www.researchgate.net/profile/K_Karthik7). He has participated in more than 25 international and national conferences. His field of research includes crystal growth, semiconductors nanostructured materials, nanomaterials, biomaterials, thin films, bimetallic and trimetallic nanocomposite materials for energy, environmental and biological applications. He is the active reviewer for various reputed journals.

S. Pushpa

S. Pushpa is currently working as Assistant Professor in the Department of Physics, Tagore Engineering College, Chennai – 600 127, India. Her field of research includes Nanomaterials for energy, environmental and biological applications.

M. Madhukara Naik

M. Madhukara Naik is working as a research scholar at the Department of Studies and Research in Industrial Chemistry, School of Chemical Sciences, Kuvempu University, Shankaragatta, Karnataka 577 451, India. He has published 6 research articles in reputed journals. He has the total citations: 21, H-index: 03 and his RG score: 11.13 (From Google scholar citations), Total Research Interest: 64.4, Recommendations: 149, Reads: 1174 (From ResearchGate).

M. Vinuth

M. Vinuth is currently working as an Assistant Professor in the Department of Chemistry, NIE Institute of Technology, Mysuru -570018, Karnataka, India. He has published 15 research articles in reputed journals. He has the total citations: 46, H-index: 04, i-10 index: 01  (From Google scholar citations) and his RG score: 12.01, Total Research Interest: 100.7, Recommendations: 120, Reads: 2535 (From ResearchGate).