Fabrication of Cu2ZnSnS4 thin film for solar cells using paste
- Fabrication of Cu2ZnSnS4 thin film for solar cells using paste
- 조진우; 김웅; 민병권
- CZTS; paste; solar cell
- Issue Date
- 2012 추계 대한화학회
- Cu2ZnSnS4(CZTS) is a very promising materials in the use of absorber layers of solar cells. CZTS contains earth-abundant elements of zinc and tin, a high optimal absorption coefficient and ideal band gap for photovoltaic applications. The CZTS thin films in Ethanol was successfully prepared via precursor solution method. The solution was spin coated on molybdenium substrates and dried at 350 °C. The coated substrate were sulfurized by annealing at 500 °C in a hydrogen sulfide-containing atmosphere. The characterization of its structure, composition, morphology and absorption spectra were done using X-ray diffraction (XRD), energy-dispersive X-ray spectroscopy (EDS), transmission electron microscopy (TEM) and UV-vis absorption spectra. The solar cells with a structure of glass/Mo/CZTS/CdS/ZnO/i-ZnO/Al and a result of the investigations, the best solar cell showed an open circuit voltage of 556 mV, a short current density of 13.5 mA/㎠, a fill factor of 40.3 % and a conversion efficiency of 3.02 %.
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