Self-cleaning, low-reflectivity surface to improve the efficiency of 2% of the battery

United States Georgia Institute of Technology are developing a technology, it is highly likely to c-Si solar cell conversion efficiency by as much as 2 percent.

Fellow of the Institute adopted the two different types of chemical etching method to produce micro-and nano-scale surface features, an increase of light absorption rate, a decrease of reflection, so that the battery maintain a clean surface.

Through the three-dimensional structure to capture sunlight, and the production from a clean surface - to allow the accumulation of rain or dew in the battery array wash away dust and dirt, the surface treatment to increase the light absorption rate. As a result of free water in the above and scroll down, the surface characteristics have been defined as a super-hydrophobic. "More sunlight to enter the photovoltaic cells, and little is reflected back to reach higher efficiency," Georgia Institute of Technology Materials Science and Engineering Professor CP Wong said, "The simulation results show that this surface We have the ability to structure the final battery efficiency by 2%. "

Wide Fund for Nature in the United States and Georgia Institute of Technology National Electric Power Test Research and Application Center, with the support of the study report was completed in March 24 in Salt Lake City in spring 2009 at the American Chemical Society national meeting.

Source: windosi.com Apr. 30, 2009