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

Chien Hung Chen; Shiao Yi Li; Anthony S.T. Chiang; Albert T. Wu; Y. S. Sun

doi:10.1016/j.solmat.2011.01.032

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

Chien Hung Chen, Shiao Yi Li, Anthony S.T. Chiang, Albert T. Wu, Y. S. Sun

Department of Chemical and Materials Engineering

Research output: Contribution to journal › Article › peer-review

65 Scopus citations

Abstract

Sol-gel SiO₂ 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 SiO₂ 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° WCA after modifying with hexamethyl-disilazane (HMDS), upon which the pencil hardness further increases to 6H.

Original language	English
Pages (from-to)	1694-1700
Number of pages	7
Journal	Solar Energy Materials and Solar Cells
Volume	95
Issue number	7
DOIs	https://doi.org/10.1016/j.solmat.2011.01.032
State	Published - Jul 2011

Keywords

AR coating
Elastic modulus
Nanoindent
Pencil hardness
Refractive index
Zeolite

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1016/j.solmat.2011.01.032

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title = "Scratch-resistant zeolite anti-reflective coating on glass for solar applications",

abstract = "Sol-gel SiO2 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 SiO2 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° WCA after modifying with hexamethyl-disilazane (HMDS), upon which the pencil hardness further increases to 6H.",

keywords = "AR coating, Elastic modulus, Nanoindent, Pencil hardness, Refractive index, Zeolite",

author = "Chen, {Chien Hung} and Li, {Shiao Yi} and Chiang, {Anthony S.T.} and Wu, {Albert T.} and Sun, {Y. S.}",

note = "Funding Information: The study has been supported by National Science Council of Taiwan, ROC through grant NSC 98-2120-M-008 -004 . ",

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AU - Chen, Chien Hung

AU - Li, Shiao Yi

AU - Chiang, Anthony S.T.

AU - Wu, Albert T.

AU - Sun, Y. S.

N1 - Funding Information: The study has been supported by National Science Council of Taiwan, ROC through grant NSC 98-2120-M-008 -004 .

PY - 2011/7

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N2 - Sol-gel SiO2 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 SiO2 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° WCA after modifying with hexamethyl-disilazane (HMDS), upon which the pencil hardness further increases to 6H.

AB - Sol-gel SiO2 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 SiO2 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° WCA after modifying with hexamethyl-disilazane (HMDS), upon which the pencil hardness further increases to 6H.

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KW - Refractive index

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

Abstract

Keywords

UN SDGs

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