Journal
SOLAR ENERGY MATERIALS AND SOLAR CELLS
Volume 95, Issue 7, Pages 1694-1700Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.solmat.2011.01.032
Keywords
AR coating; Zeolite; Pencil hardness; Nanoindent; Elastic modulus; Refractive index
Funding
- National Science Council of Taiwan, ROC [NSC 98-2120-M-008-004]
Ask authors/readers for more resources
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.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available