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Difunctional coated glass capable of reducing visible light reflection and reflecting near infrared ray and preparation method thereof

A technology of coated glass and near-infrared rays, applied in chemical instruments and methods, glass/slag layered products, layered products, etc., can solve the problems of high price and inability to use a single piece for a long time, and achieve low equipment cost and visible light Increased transmittance and broad prospects

Active Publication Date: 2014-03-05
JIANGSU XIUQIANG GLASSWORK CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Through literature comparison, the current dual-function coated glass includes "transparent coated glass with dual functions of preventing static electricity and blocking ultraviolet rays and its preparation method" (application (patent) number: 201010562026.7), "dual-function coated glass for cutting ultraviolet rays / reflecting infrared rays and Its preparation method" (invention patent ZL200410061018.9), "visible light anti-reflection and ultraviolet cut-off dual-function coated glass and its preparation method" (invention patent 200710053367.X), and only single-function and expensive glass prepared by sputtering method ITO "Preparation method of heat-insulating and defrosting coated glass" (application number: 98100128.9), coated glass with metal film as reflective film layer and cannot be used for long-term single-piece durability

Method used

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Examples

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preparation example Construction

[0022] The preparation method of visible light anti-reflection / near-infrared reflection coated glass is characterized in that it comprises the following steps:

[0023] 1) First, the glass substrate to be coated is cleaned and dried.

[0024] 2) Then use the spraying method on the clean glass sheet at a temperature of 300-450°C or the dipping and pulling method on the clean glass sheet at room temperature to coat a single film layer or a double film layer respectively:

[0025] a) Prepare a spraying solution or dipping solution for plating a silicon dioxide isolation layer. The spraying solution or dipping solution is composed of organic silicon (such as tetraethyl orthosilicate), ethanol and water, and acid is used as a catalyst. The silicon dioxide in the liquid is The mass percentage after the content is converted into silicon dioxide is: 3-10%.

[0026] B) preparation is used for coating the spraying solution or dipping solution of transparent conductive semiconductor oxi...

example

[0032] The glass substrate to be coated is cleaned and dried; the size of the glass substrate is: 500×500×3.2, and the visible light transmittance is 91.60%.

example 1

[0034] Preparation of coated glass with visible light anti-reflection / near-infrared reflection double-functional composite film layer by spraying method, comprising the following steps:

[0035] 1) Prepare the spray solution. The silicon content in the first layer of spraying liquid is converted into the mass percentage of silicon dioxide: 3.0%. In the second layer of spraying liquid, the molar ratio of Sn and F is: Sn:F=1:0.1. In the third layer of spraying liquid, the silicon content converted into the mass percentage of silicon dioxide is: 3.0%.

[0036] 2) Under normal pressure, first heat the clean glass substrate to 300°C, then spray the first layer of spraying liquid containing silicon dioxide isolation layer, and then spray the second layer of transparent conductive semiconductor oxide on the first layer Spray the coating liquid, then spray the third layer of spray coating liquid containing the silicon dioxide film layer on the second layer, and finally heat-treat th...

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Abstract

The invention relates to a difunctional coated glass capable of reducing visible light reflection and reflecting near infrared ray and a preparation method thereof. A film structure of the difunctional coated glass is one of the following two: a. a one side coated glass: using glass as a substrate and arranging a layer of silica isolated film, a layer of transparent conductive semiconductor oxide film and a layer of porous silica film successively; b. a double-faced coated glass: using glass as a substrate and successively arranging a layer of silica separating layer, a layer of transparent conductive semiconductor oxide film and a layer of porous silica film on two sides of the glass respectively. Compared with an uncoated photovoltaic seal glass, the difunctional coated glass has a visible light transmissivity raised by 2.0-4.0% and near infrared ray reflectivity raised by 70-75%. The invention can be widely applied to silicon system solar cell packaging and glass for building industry and has a promising prospect.

Description

technical field [0001] The invention belongs to the field of encapsulating glass for silicon-based solar cells and the like, and in particular relates to a coated glass with dual-functional composite films of anti-reflection visible light and reflection near-infrared rays on a glass substrate and a preparation method thereof. Background technique [0002] With the increasing carbon emissions of human society and the depletion of conventional energy, vigorously developing clean and new energy has become the only way for all countries in the world to achieve sustainable social development and move towards civilization. Solar photovoltaic is one of the clean energy sources and has been widely used. At present, silicon-based solar cells, including monocrystalline silicon solar cells, polycrystalline silicon solar cells, and amorphous silicon / microcrystalline silicon thin-film cells, have been widely used. The bandgap of crystalline silicon is about 1.12eV, corresponding to the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C03C17/34B32B17/06
Inventor 赵青南董玉红赵杰卢秀强
Owner JIANGSU XIUQIANG GLASSWORK CO LTD
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