Synthesis and characterization of petal type CZTS by stacked layer reactive sputtering. (December 2015)

• Record Type: Journal Article
• Authors: Singh, Om Pal; Parmar, R.; Gour, K.S.; Dalai, M.K.; Tawale, Jai; Singh, S.P.; Singh, Vidya Nand
• Is Part Of: Superlattices and microstructures. Volume 88(2015)
• Page Start: 281
• Page End: 286
• Publication Date: 2015-12
• Subjects: Sputtering -- CZTS -- Petal type structure -- Thin-films; Superlattices as materials -- Periodicals; Microstructure -- Periodicals; Semiconductors -- Periodicals; Superréseaux -- Périodiques; Microstructure (Physique) -- Périodiques; Semiconducteurs -- Périodiques; 621.38152
• DOI: 10.1016/j.spmi.2015.09.020
• Languages: English
• ISSNs: 0749-6036

Abstract

Abstract: Here we present a method to grow the petal type structure of CZTS thin film on soda lime glass substrate using the stacked layer reactive sputtering and post-depostion annealing in N2 atmosphere. Optical bandgap of the petal type structure of CZTS was determined using UV–VIS spectroscopy and the value was 1.5 eV. In XRD analysis, (112) plane having highest intensity and other supporting planes with low intensity peaks corresponding to (200), (220) and (312) revealed the presence of CZTS phase. It was further confirmed by the Raman analysis, where the Raman peaks at 288 cm −1, 335 cm −1 and 353 cm −1 revealed the presence of CZTS phase. Petal type growth was observed in the scanning electron microscopy analysis. Elemental analysis was done by the EDAX. In EDAX analysis, It is observed that sample was Sn rich which may be responsible for petal type growth. Petal type growth of CZTS may be helpful in increasing the performance of the CZTS based thin film solar cell by phenomena of light scattering and enhanced surface area. Highlights: Petal type structure of CZTS were grown by stacked layer reactive sputtering and post-deposition annealing. The optical absorbance of CZTS petal was one order of magnitude higher than the values reported for CZTS thin films. This type of structure shall be useful in enhancing the efficiency of CZTS based thin film solar cell.