干旱区生态环境知识资源中心

Several proposals for increasing the output of photovoltaic (PV) module were conducted. For instance, there are a few attempts for applying hydrophilic or hydrophobic coating on the glass surface of PV module to avoid dust accumulation and applying anti-reflective coating on it to increase transmittance of solar radiation. However it is rare to report the results of durability in consideration of severe outdoor exposure condition, such as desert area. We have developed a new power-enhancement coating being anti-reflective and self-cleaning properties with simple coating methods like spray or dip. The fundamental characteristics of the power-enhancement coating have been reported. In this paper, we discuss the result of several durability tests. The transmittance and water contact angle of the power-enhancement coating were kept under several durability tests such as UV test, weathering test, heat test, heat cycle test and dust test. Due to the acceleration tests, it was estimated the durability of the coating was reached to 30 years in terms of transparency and hydrophilicity.