Influence of pH on the Properties of Chemically Prepared SnS and CdS Thin Films

Indian Journal of Pure & Applied Physics

article

Smiya John¹  Melda Francis²  Reena Mary A P¹  V Geetha¹ 

[1] Department of Physics, Govt.Victoria College ,(affiliated to University of Calicut) Palakkad Kerala 678 001;Department of Physics, Mercy College ,(affiliated to University of Calicut) Palakkad Kerala 678 006

关键词: SnS;    CdS;    XRD measurements;    Raman analysis;    EDS spectra;    Article;   

DOI  :  10.56042/ijpap.v61i5.70933

来源: National Institute of Science Communication and Information Resources

【 摘 要 】

The SnS and CdS thin films were chemically prepared from the bath solutions with different pH values of 9.8, 9.9, and 10, and 11.3, 11.4, and 11.5 respectively. The X-ray diffraction confirmed the formation of orthorhombic SnS with a preferred orientation along the 013 plane and cubic CdS along the 311 planes. Crystallite size and lattice strain were calculated from the Williamson-Hall plot, and it was found that the crystallite size increased as pH increased. Raman spectra showed the prominent peaks of SnS and CdS thin films. Optical studies revealed a decrease in the optical band gap of both samples with increasing pH values. SnS films showed needle-like morphology with agglomerates and CdS flake-like interconnected structures. From the EDS analysis, it was noticed that both the SnS and CdS thin films shifted to a metal-rich composition with the increase in the pH of the bath solution. Finally, a solar cell (ITO/SnS/CdS/Ag) was made, and it was found that cell structures formed with SnS and CdS that were deposited with pH values of 10 and 11.3 showed better performance.

【 授权许可】

Unknown