Easy hydrothermal preparation of Cu2ZnSnS4 (CZTS) nanoparticles for solar cell application
Sekou Mariama Camara1, Lingling Wang, Xintong Zhang
1Center for Advanced Optoelectronic Functional Materials Research and Key Laboratory for UV-Emitting Materials and Technology of Ministry of Education, Northeast Normal University, 5268 Renmin Street, Changchun 130024, People's Republic of China.
Abstract:
CZTS nanoparticles were synthesized by a simple hydrothermal method at 230 °C for 24 h. The CZTS powder was synthesized with different concentration ratios of sulfur and copper, and the thin film was obtained by spin coating. A copper-rich concentration ratio of CZTS nanoparticles showed better results. The nanoparticles exhibited large absorption spectra, a fact linked to the quality of their optical properties. In addition, crystal structures, surface morphology, band gap, current-voltage, and Mott-Schottky diagram characterization of CZTS nanoparticles were also carried out by x-ray diffraction, Raman spectroscopy, scanning electron microscopy, energy-dispersive x-ray spectroscopy, transmission electron microscopy, ultraviolet-visible-near-infrared spectroscopy and photoelectrochemical measurements, respectively.
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