Journal
SOLAR ENERGY MATERIALS AND SOLAR CELLS
Volume 230, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.solmat.2021.111203
Keywords
Anti-soiling; Photovoltaic; Hydrophobic; Weather stable; Soiling; Ambient curable
Funding
- project of Technology Research Centre - Department of Science and Technology (DST), Govt. of India [AI/1/65/ARCI/2014]
- ARCI
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The developed novel anti-soiling coating showed excellent weather stability and anti-soiling properties, effectively reducing the impact of pollution without affecting the performance of photovoltaic devices.
Photovoltaic conversion technologies took the opportunity to trap the abundant solar energy, but soiling reduces these device's energy yield. In this endeavor, we developed a novel anti-soiling coating with excellent weather stability to counter the challenges posed by soiling. The developed anti-soiling coating characteristics like ambient condition curablity, good mechanical and weather stability to encounter the real field conditions are because of the bonding of functionalized hybrid Zr-O-Si network with the glass. The X-ray photoelectron spectroscopy, FTIR, and Raman spectroscopy analysis indicate the presence of the functionalized hybrid Zr-O-Si network in the coating. The coating exhibited good thermal stability up to 150 degrees C and observed a minimal decrement of < 4 degrees in the water contact angle over 100 h. The coating's weather stability was analyzed by adapting IEC 61646 standards for 1500 h with a temperature range of 85 degrees C & -40 degrees C and maximum relative humidity of 85% and the coating was found to be more stable than commercial anti-soiling coating. The developed coating shows no loss in angle resolved transmission in the range of 10-80 degrees. The coated panel showed an excellent anti-soiling effect and a net reduction of 24.5 % in the soiling losses are observed compared to that of the not-coated panel over 50 days. The developed coating is combination of different unique characterstics such as, scalable coating technique, ambient condition curability, good mechanical, weather stability and anti-soiling properties that distinguish this work from prior state of the art.
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