Solution-processed Cu3V(S, Se)4 absorbers for thin films solar cells

Cu 3 V(S, Se) 4 material is considered as a novel potential absorber of thin film solar cells due to its excellent properties. In this work, it is the first time that Cu 3 V(S, Se) 4 thin film solar cells are prepared by solution method, and the preparation process of fine absorbers is explored. The combination of air -baking and selenization processes boosts the excellent Cu 3 V(S, Se) 4 absorber. The optimal air -baking and selenization condition is confirmed as 360 degrees C for 20 min and 560 degrees C for 30 min, respectively. And the highest photoelectric conversion efficiency ( PCE ) of Cu 3 V(S, Se) 4 solar cells is 1.68 %. This is the first report on the solution preparation of Cu 3 V(S, Se) 4 thin film solar cells, and it is believed that performance of Cu 3 V(S, Se) 4 solar cells will be optimized by improving the preparation process in the future.