| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1550294 | Solar Energy | 2013 | 6 Pages |
•Development of CZTS solar cells using elemental metal sputtering.•Reported efficiency of 5.75%.•112-Oriented CZTS films with well-defined morphology obtained.•550 °C found to be optimum temperature for CZTS growth.•CZTS films exhibit near-optimum bandgap ∼1.5 eV.
Synthesis of Cu2ZnSnS4 thin film solar cells by sulfurization of sputtered Sn/Zn/Cu precursors is studied. The sulfurization temperatures were varied, and the morphology, cross section, and composition of the CZTS were investigated by scanning electron microscopy, energy dispersive spectroscopy, X-ray diffraction and Raman scattering. To further explore the CZTS layer, the following additional layers were deposited to complete the solar cells: CdS with chemical bath deposition; ZnO and AZO with RF magnetron deposition; and, finally, silver fingers as the front contact. The efficiency and characteristics of the thin film solar cells were measured and a detailed comparison is reported. Sulfurization at 550 °C yields a maximum efficiency of 5.75% without any anti-reflective layers.
