| Electrophoretic Deposition of Cu2ZnSn(S0.5Se0.5)4 Films Using Solvothermal Synthesized Nanoparticles |
| Paper ID : 1523-UFGNSM-FULL |
| Authors: |
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Amir masoud badkoobehhezaveh1, H. Abdizadeh2, M.R. Golobostanfard *3 11391894634 2School of Metallurgy and Materials Engineering, College of Engineering, University of Tehran, Tehran, Iran Center of Excellence for High Performance Materials, University of Tehran, Tehran, Iran 3School of Metallurgy and Materials Engineering, College of Engineering, University of Tehran, Tehran, Iran |
| Abstract: |
| In this paper, a simple, practical, and fast solvothermal route is presented for synthesizing the Cu2ZnSn(S0.5Se0.5)4 nanoparticles (CZTSSe). In this method, the precursors were dissolved in triethylenetetramine and placed in an autoclave at 240 °C for 1 h under controlled pressure and constant stirring. After washing the samples for several times with absolute ethanol, the obtained CZTSSe nanoparticles were successfully deposited on fluorine doped tin oxide substrates by convenient electrophoretic deposition (EPD) using colloidal nanoparticles. The most appropriate parameters for EPD of pre-synthesized CZTSSe nanoparticles which result in proper surface properties, controlled thickness, and high film quality are investigated by adjusting applied voltage, pH, and deposition time. X-ray diffraction pattern and Raman spectroscopy of the pre-synthesized nanoparticles show kesterite structure formation. The particle size of the CZTSSe nanoparticles is in the range of 100 to 400 nm and for some agglomerates, it is about 2 µm confirmed by scanning electron microscope. The deposited film with optimized parameter has acceptable quality without any crack in it with the thickness of about 4–5 µm. Energy-dispersive X-ray spectroscopy confirms that the chemical composition of the samples is in near stoichiometric Cu-poor and Zn-rich region, which guarantees the p-type character of the film. The diffuse reflectance spectroscopy also demonstrates that the optical band gap of the sample is about 1.2 eV. |
| Keywords: |
| Cu2ZnSn(SxSe1-x)4, CZTSe, Solvothermal synthesis, Electrophoretic deposition, Nanoparticles, Thin film, Solar cells. |
| Status : Paper Accepted (Oral Presentation) |
