| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1641970 | Materials Letters | 2015 | 6 Pages |
•Structural evaluation of sputter grown sub-micrometer thick Cu2ZnSnS4 (CZTS) films.•The CZTS films grown using quaternary stoichiometric target at room temperature.•Visible and UV Raman analysis for secondary phase formation.•CZTS-based thin film solar cells show open circuit voltage ~600 mV.•Sputter grown uniform CZTS absorber for large scale photovoltaic technology.
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.
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