a-Si:H/c-Si Heterojunction Solar Cells: A Smart Choice for High Efficiency Solar Cells

In this chapter, we start by a short presentation of the state-of-the art of the energy market to understand the evolution of the energetic demand and the role of photovoltaic technology in the near future. Moreover, we present all the actual industrial high efficiency solar cells among which is located the heterojunction technology. Then, we talk about the key points that define the technology, the main bottlenecks and the main solutions found at INES research group on heterojunction devices. Also, we show our best results obtained recently and some guidelines to improve still more the efficiency of the devices. Finally, we finish by a summary of the main advantages of this technology taking into account all the parameters described above.