Superhydrophobic silica antireflective coatings with high transmittance via one-step sol-gel process
Superhydrophobic silica antireflective coatings with high transmittance via one-step sol-gel process
复制标题
通过一步溶胶-凝胶工艺制备高透光率的超疏水二氧化硅抗反射涂层
DOI：
10.1016/j.tsf.2017.03.005
复制
发表时间：
2017-06-01
期刊：
影响因子：
2.1
通讯作者：
Peng, Lin
中科院分区：
文献类型：
--
作者：
Xu, Juan;Liu, Yongsheng;Peng, Lin
已知太阳能玻璃上的二氧化硅抗反射涂层可将电流输出增加几个百分点，但差的疏水性将妨碍涂层的性能。采用低成本的溶胶-凝胶浸涂法制备了具有高透光率和优异超疏水性的涂层。使用正硅酸乙酯和三甲基乙氧基硅烷作为共前体，碱催化水解导致形成具有富含甲基的二氧化硅纳米颗粒的杂化溶胶。最大透过率分别达到97.1%和98.8%，水接触角达到152度。考虑了纳米复合涂层的孔隙率和表面粗糙度对折射率变化和光散射的影响。本文的研究为制备超疏水减反射涂层提供了有效的方法，改性后的涂层具有成本低、减反射性能上级、自清洁性能好、可大面积制备等优点。(C)2017爱思唯尔B. V.保留所有权利。
Silica antireflective coatings on solar glass are known to increase the current output by a few percent, but poor hydrophobicity will hamper the performance of the coatings. Coatings with high transmittance and excellent superhydrophobicity were prepared via low cost sol-gel dip-coating method. Using tetraethylorthosilicate and trimethylethoxysilane as co-precursors, the base-catalyzed hydrolysis leads to the formation of a hybrid sol with silica nanoparticles enriched in methyl groups. The maximum transmittance reaches 97.1% and 98.8% and the water contact angle reaches up to 152 degrees. The porosity and the surface roughness of the nanocomposite coatings were taken into consideration, which give rise to refractive index change and the light scattering. This article may provide effective strategies to fabricate superhydrophobic antireflection coatings and the modified coatings possess advantages of low manufacturing cost, superior antireflective performance, good self-cleaning properties and feasible method for large area fabrication. (C) 2017 Elsevier B.V. All rights reserved.