Abstract
The optical properties of electrodeposited zinc copper telluride (ZnCuTe) ternary nanowires on ITO substrate using polycarbonate membrane (Whatman) of diameter 200,100 and 50 nm have been studied and reported in this paper. Scanning electron microscopy confirmed the formation of the standing nanowires having uniform diameter equal to the diameter of the template used. UV–vis absorption and photoluminescence (PL) spectroscopy were used for optical studies. The optical band gaps of 200, 100 and 50 nm have been calculated as 3.19, 3.39 and 3.57 eV, respectively using UV–vis spectroscopy. The UV–visible absorption spectrometry reveals the absorption spectra of 200, 100 and 50 nm shows a blue shift. UV–visible absorption depicts that the band gap increases with decrease in the diameter size of the nanowires. Several broad emission lines have been observed over a wide wavelength range (390–690 nm) of visible light spectrum in the PL spectra of ZnCuTe nanowires of diameter 200, 100 and 50 nm. A good emission peak at around 615 nm has been observed in all nanowires.
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Acknowledgments
We acknowledge the University Grants Commission, New Delhi, India for their financial support through faculty development scheme under major research project Grant no. F.No.34-55\2008 (SR). We thank Dr. D. Harnath, Scientist E, Luminescent Materials Group, National Physical Laboratory, New Delhi for providing PL measurement facility. We are also thankful to Dr. Sanjeev Aggarwal, Physics Department, Kurukshetra University, Kurukshetra and Dr. Ruchita Pal, Senior Research Fellow in Advanced Instrumentation Research Facility (AIRF), Jawaharlal Nehru University, New Delhi for providing UV–vis Spectroscopy and SEM facility respectively.
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Kumar, S., Vohra, A. & Chakarvarti, S.K. Optical studies of electrodeposited ZnCuTe ternary nanowire arrays. J Mater Sci: Mater Electron 23, 1793–1797 (2012). https://doi.org/10.1007/s10854-012-0664-2
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DOI: https://doi.org/10.1007/s10854-012-0664-2