Synthesis of CZTSe nanoparticles through solvothermal route

In this paper, a simple, practical, and fast solvothermal route is presented for synthesizing theCu۲ZnSnSe۴ nanoparticles. In this method, the precursors were dissolved intriethylenetetramine and placed in autoclave at ۲۴۰ °C for ۱ h under controlled pressure andconstant stirring. The obtained CZTSe nanoparticles were characterized by X-ray diffraction(XRD), scanning electron microscope (SEM), energy-dispersive X-ray spectroscopy (EDX),and diffuse reflectance spectroscopy (DRS). The XRD and EDX analyses confirm thesuccessful synthesis of pure kesterite structure. The particle size of CZTSe nanoparticles is inthe range of ۲۲۵ nm to ۲ μm. The band-gap energy obtained from the DRS is about ۱.۲ eVwhich is very suitable for photovoltaic applications

Keywords:

Cu۲ZnSnSe۴ , CZTSe , Solvothermal synthesis , Solar cells , Semiconductor