| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 6535340 | Solar Energy Materials and Solar Cells | 2015 | 8 Pages |
Abstract
Cu-Zn-Sn (CZT) precursors for Cu2ZnSnSe4 (CZTSe) solar cell were prepared by electrochemical co-deposition method with different metals composition. CZT precursors were preliminary annealed in three different atmospheres in order to obtain homogenous, without pores Cu-Zn-Sn layers. A high crystalline quality CZTSe absorber was synthesised as has been determined by X-ray diffraction and Raman spectroscopy methods. CZTSe based solar cells were fabricated and champion cell demonstrated 2.7% efficiency and reached as high as 70% of external quantum efficiency. Scanning electron microscope investigations of CZTSe solar cells cross-section revealed that Mo/CZTSe interface exhibits large voids and local delamination from Mo layer. The back contact issues are detrimental to solar cell performance reducing shunt resistance and open circuit voltage.
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Authors
R. Kondrotas, R. JuÅ¡kÄnas, A. Naujokaitis, A. Selskis, R. Giraitis, Z. Mockus, S. KanapeckaitÄ, G. Niaura, H. Xie, Y. Sánchez, E. Saucedo,