Structural properties and solar cells performance of sputter grown sub-micrometer thick (~600 nm) Cu2ZnSnS4 (CZTS) films are investigated for low cost and large scale photovoltaic deployment. The CZTS films are deposited using single quaternary stoichiometric target at room temperature. X-ray diffraction, micro-Raman spectroscopy, and scanning electron microscopy measurements were carried out to investigate the structural property and secondary phase formation.
The intense phonon peak at 334 cm−1 in the visible Raman spectra confirms the deposition of single phase CZTS films. CZTS-based thin film solar cells show excellent performance with open circuit voltage ~600 mV and over all cell efficiency of ~3.07%, exhibiting commercial potential toward large scale fabrication of photovoltaic devices.
Dalapati, G.K., Batabyal, S.K., Masudy-Panah, S., Su, Z., Kushwaha, A., Wong, T.I., Liu, H.F., Bhat, T., Iskander, A., Lim, Y.F. and Wong, L.H., 2015. Sputter grown sub-micrometer thick Cu 2 ZnSnS 4 thin film for photovoltaic device application. Materials Letters, 160, pp.45-50.
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Categories: Solar & Photovoltaics