Abstract
Cu2ZnSnS4 (CZTS) is considered to be one of the most promising light absorbing materials for low-cost and high-efficiency thin-film solar cells. It is composed of earth abundant, non-toxic elements. In the present study, wurtzite CZTS nanocone has been synthesized by a green chemistry route. The nanocones have been characterized for its optical, structural and microstructural properties using UV–Vis spectrophotometer, X-ray diffraction, Raman spectroscopy and high-resolution transmission electron microscopy. Optical absorption result shows a band gap of 1.42 eV. XRD and Raman results show wurtzite structure and TEM studies reveal the nanocone structure of the grown material. Growing vertically aligned nanocone structure having smaller diameter shall help in enhancing the light absorption in broader range which shall enhance the efficiency of solar cell. This study is a step in this direction.
Highlights
CZTS has a direct band gap of about 1.5 eV which is close to the optimal value for being used as an absorber layer in solar cell
Growing vertically aligned nanocone structure having smaller diameter shall help in enhancing the light absorption in broader range which shall enhance the efficiency of solar cell
CZTS nanocones have been synthesized through a facile greener and inexpensive route, which involves the surfactantassisted thermolysis of metal dithiocarbamates
Summary
CZTS has a direct band gap of about 1.5 eV which is close to the optimal value for being used as an absorber layer in solar cell. Abstract Cu2ZnSnS4 (CZTS) is considered to be one of the most promising light absorbing materials for low-cost and high-efficiency thin-film solar cells. Wurtzite CZTS nanocone has been synthesized by a green chemistry route. Optical absorption result shows a band gap of 1.42 eV.
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