Scratch-resistant zeolite anti-reflective coating on glass for solar applications

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题名:	Scratch-resistant zeolite anti-reflective coating on glass for solar applications
作者:	Chen,CH;Li,SY;Chiang,AST;Wu,AT;Sun,YS
贡献者:	化學工程與材料工程學系
关键词:	LOW-K MATERIALS;THIN-FILMS;REFRACTIVE-INDEX;NANOCRYSTALS;EVAPORATION;MFI
日期:	2011
上传时间:	2012-03-27 16:27:41 (UTC+8)
出版者:	國立中央大學
摘要:	Sol-gel SiO(2) anti-reflection (AR) coating on solar glass is known to increase the current output by a few percent, but its mechanical durability is of concern. To improve its strength, the amorphous SiO(2) may be replaced by zeolite, which is a microporous aluminosilicate crystalline material. Scratch-resistant AR coating has been prepared by the dip coating of a composition which contains aggregated zeolite nanoparticles as the structure provider and zeolite precursors as the reactive binder. AR coating with better than 5H pencil hardness can be made with a composition containing BEA zeolite. Nanoindenter measurements show that this BEA zeolite films have 1.5 GPa indent hardness and 35 GPa elastic modulus. Furthermore, the freshly prepared AR coating shows a self-cleaning effect with a water contact angle (WCA) close to zero. It can be made super-hydrophobic with larger than 130 degrees WCA after modifying with hexamethyl-disilazane (HMDS), upon which the pencil hardness further increases to 6H. (C) 2011 Elsevier B.V. All rights reserved.
關聯:	SOLAR ENERGY MATERIALS AND SOLAR CELLS
显示于类别:	[化學工程與材料工程學系 ] 期刊論文

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