太阳能器件用超疏水增透膜的研究进展

Research progress of superhydrophobic anti-reflection films for solar devices

  • 摘要: 由于在解决关键技术问题方面的潜在用途,具有超疏水特性的减反射表面受到了广泛的关注。超疏水表面的微纳米结构结合材料的低表面能,能有效提高材料的抗润湿性能,实现自清洁。这是由于超疏水表面的水接触角大于150°,使得水滴能够包裹基体表面的杂质一同滚落,从而达到自清洁的目的。超疏水表面比疏水表面的要求更加严苛,可以通过两种关键途径来实现:一是直接利用自身低表面能的材料制造粗糙表面,二是首先制造出粗糙表面,再利用低表面能材料对其进行修饰。同时,高透光率是提高光学设备和器件性能的关键,如太阳能板等。因此,设计和实现高透光的自清洁超疏水表面,从而降低表面的反射率有重要意义和研究前景。本综述重点梳理了不同增透超疏水表面材料的发展,特别是玻璃材料,最后对低反射的自清洁超疏水表面材料的未来应用进行了探讨。

     

    Abstract: Due to its potential application in solving key technical problems, the antireflective surface with superhydrophobic properties has received extensive attention. The micro–nano structures of superhydrophobic surface combined with the low surface energy are resistant to the wettability of the material effectively and make self–cleaning come true. The water contact angle of the superhydrophobic surface is greater than 150°, so that the water droplets can wrap the impurities on the surface and roll off to achieve self–cleaning. Superhydrophobic surface is more stringent than hydrophobic surface, which can be achieved through two ways: One is to create rough surface directly with low surface energy materials, the other is to create rough surface first, and the low surface energy materials can be used to modify it. At the same time, high transmittance is the core to improve the performances of optical devices, such as photovoltaic module, etc. Therefore, it is of great significance and research prospect to design and achieve self–cleaning superhydrophobic surface with high transmittance. This review focuses on the development of different anti–reflective and superhydrophobic surface materials and discusses the future application of low reflection surface materials with self–cleaning superhydrophobic.

     

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