Transparent Solar Cells
Transparent photovoltaic (TPV) is a unique technology for the utilizing of sunlight. It can not only convert the light to electricity but also provide a bright natural light environment. The unique advantages of the TPV offer great potential for applications in smart windows on buildings, vehicles, and greenhouses. On one hand, the TPV is an effective approach to generate electrical power. Assuming a TPV module power efficiency of 10%, the total potential of TPV-based windows is conservatively estimated as 8000 TWh/yr (0.9 TW), or nearly 10% of the total electricity generation of China. On another hand, the TPV can provide an ideal choice to meet the aesthetic demands in the invisible self-powered devices.
Our research is focusing on the development of highly transparent efficient TPVs. By balancing efficiency and transparency, the average visible transmission (AVT) can achieve up to 85% which exceeds the transparency of the double-glazed glass in the buildings. Meanwhile, the power conversion efficiency (PCE) can achieve over 5% (the theoretical value is ~ 11% when considering all reasonable optical losses). The flexible property of the devices is also be considered in the research.