Abstract
In 21th century, the renewable energy becomes a more and more crucial issue. In the recent twenty years, the technology and development of solar cell fabrication have outstanding breaking through, and the photovoltaic market is expected to be the flourishing sub-sector in the alternative industry for the endless sunlight. However, we also need to consider an environmental product for our planet. One-step sputtering CIGS fabrication is the main development in our group. This method is unlike the co-evaporation and selenization technique. It doesn’t require the extra Se supply and have the large-scale mass-production potential. In our research, we found the Mo back contact plays a very important role in this sputtering fabrication. In addition, the interaction between Mo back contact and CIGS absorber layer exists a direct evidence and correlated characteristics. In this thesis, I apply several different Mo back contacts for CIGS solar cells and study the fundamental mechanism between Mo and CIGS absorber layer. Furthermore, I analyze the CIGS/Mo samples and solar cell devices with different methods. Finally, I give some discussions and conclusions for the thin film property and the influence on solar cell.