Dear Colleagues,

The Photovoltaic Systems are facing new challenges and opportunities due to the development of new solar cells. Nowadays, heterojunction solar cell efficiency is higher than the homojunction solar cells. However, the fabrication price of homojunction solar cells is lower than heterojunction solar cells. Nanotechnology with new nanostructures is becoming increasingly sought out and their inclusion in homojunction solar cells can bring benefits, for example, shifting the maximum efficiency position from the visible wavelengths to the infrareds. In a hypothetical situation, a set of photovoltaic panels with homojunction solar cell technology and nanostructures are connected to a set of photovoltaic panels with homojunction solar cell technology without nanostructures. This system works both in the visible and the infrared wavelengths, i.e., the energy is produced during the day and the night: an important improvement in the photovoltaic systems that is very useful for the northern countries where the daylight period is shorter compared to the southern countries.  

This Special Issue invites original papers addressing the various topics relating nanotechnology materials and systems applied in Photovoltaic Systems. A wide variety of contributions is welcomed ranging from theoretical to simulation to experimental papers.

• Nanotechnology
• Semiconductor materials
• Solar cells
• Photovoltaic systems
• Integration photovoltaic systems