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Photovoltaic cells are a more promising alternative energy source. Its mechanical principle is simple, there are no moving parts, clean and zero emissions. Unfortunately, its efficiency is low due to overheating. To this end, Shanhui Fan, a professor of electrical engineering at Stanford University, thought of a good solution.
He led the research team to develop a very thin layer of quartz glass whose surface is a layer of micron-sized cones. Since the light of different wavelengths has different characteristics and refractive index, the size and shape are easy to disperse heat radiation. Into the atmosphere.
If the solar cell is overheated, it will not only affect the efficiency but also cause various problems. According to studies, the efficiency decreases by 0.5% for every 1 degree Celsius increase in temperature. If the temperature rises by 10 degrees Celsius, the rate of decline in efficiency will double.
With this special glass, there is no need for any energy to absorb the heat on the surface of the battery, and the efficiency of solar cells can be greatly improved.
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