A Foam-Core Meniscus Coating Process for Retrofit Anti-Reflective Coatings

Foam-core meniscus coating is being used to retrofit 100 nm-scale sol–gel anti-reflective coatings (ARCs) onto in-field solar panels through the deposition, evaporation, and curing of wet films. Advantages of this technique include the means to control fluid flow relative to substrate motion and the ability to conform to large, warped substrates. While simple in practice, no models exist for predicting critical outcomes such as film thickness. In this paper, preliminary experiments are used to identify important process parameters, and an analytical model is developed and validated for predicting the thickness of silica sol–gel films deposited on solar glass.

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Changes of thickness and refractive index of silica sol-gel film by dip coating process

High Power Laser and Particle Beams ◽

10.3788/hplpb20142607.72005 ◽

2014 ◽

Vol 26 (7) ◽

pp. 72005

Author(s):

张日东 Zhang Ridong ◽

严鸿维 Yan Hongwei ◽

吕海兵 Lü Haibing ◽

张尽力 Zhang Jinli ◽

晏良宏 Yan Lianghong ◽

...

Keyword(s):

Refractive Index ◽

Sol Gel ◽

Dip Coating ◽

Silica Sol ◽

Coating Process ◽

Gel Film

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Crack Filling of Cover Glasses by Sol-Gel Coatings

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.797.700 ◽

2013 ◽

Vol 797 ◽

pp. 700-705 ◽

Cited By ~ 2

Author(s):

Kung Jeng Ma ◽

Hsi Hsin Chien ◽

Su Wei Huang ◽

Shi Chang Chen ◽

Choung Lii Chao

Keyword(s):

Sol Gel ◽

Smart Phone ◽

Processing Parameters ◽

Silica Sol ◽

Coating Process ◽

Cover Glass ◽

Roll Coating ◽

High Penetration ◽

Glass Plates ◽

Resistant Layer

Strengthening of glass sheets through the process of ion exchange have been widely used in thinner cover glass for smart phone. The compressive stress improves the ability of the glass surface to withstand damage from mechanical impact. However, the presence of the damage resistant layer makes conventional mechanical and laser cutting of the ion-exchanged glass difficult. Normally, the cutting process will lead to spontaneous glass sheet breakage or shattering. Even successful in some samples, the underlying central tension is exposed on the edge, and the mechanical strength and durability of this edge is degraded. The repair of edge cracks becomes an extremely important issue for the development of single glass based smart phone. The ion exchanged glass plates (Corning IOX-FS) with a thickness of 0.7 mm were selected as the substrate materials. After cutting ion exchanged glass by high penetration diamond scribing wheels, the edge of glass plates can be protected or strengthened with silica sol using roll coating process. It was observed that the strength could be improved achieving 210 % compared to the strength of uncoated glass sheets. The sol-gel coating could improve the strength of the glass mainly by the mechanisms of filling in edge flaws or blunting crack tips. The effects of silica sol and processing parameters of roll coating process on the cracks filling effects were investigated.

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Photodegradation of rhodamine 6G dimers in silica sol–gel films

Journal of Photochemistry and Photobiology A Chemistry ◽

10.1016/j.jphotochem.2013.08.007 ◽

2013 ◽

Vol 271 ◽

pp. 93-98 ◽

Cited By ~ 14

Author(s):

Barbara Lasio ◽

Luca Malfatti ◽

Plinio Innocenzi

Keyword(s):

Rhodamine 6G ◽

Sol Gel ◽

Silica Sol ◽

Sol Gel Films

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The Influencing Factors for the Thickness of Silica Sol-Gel Film by the Dip Coating Process

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.597.165 ◽

2014 ◽

Vol 597 ◽

pp. 165-169

Author(s):

Jie Hong Lei ◽

Ri Dong Zhang

Keyword(s):

Thin Films ◽

Surface Roughness ◽

Refractive Index ◽

Sol Gel ◽

Dip Coating ◽

Silica Sol ◽

Coating Process ◽

Power Functions ◽

Withdrawal Speed ◽

Gel Film

The porous sol-gel silica thin films were prepared on silicon substrate by the dip coating process. The surface roughness and microstructure of the film was measured by optical microscopy and AFM .Coating thickness and refractive index were measured by ellipsometry method. Influence of withdrawal speed and concentration of colloid was investigated for the thickness of silica. The relation of the thickness and withdrawal speed was fitted by the linear and power functions, and the results were analyzed and compared. It was found that the films with the same thickness prepared by different concentrations of colloid have different refractive indexes. The experimental results indicated that the thickness and refractive index of the film can be controlled by changing the withdrawal speed and colloid concentration.

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