CN103022191A - Photovoltaic glass with porous-structure and low-refractivity titanium dioxide antireflection coating - Google Patents
Photovoltaic glass with porous-structure and low-refractivity titanium dioxide antireflection coating Download PDFInfo
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- CN103022191A CN103022191A CN 201210339426 CN201210339426A CN103022191A CN 103022191 A CN103022191 A CN 103022191A CN 201210339426 CN201210339426 CN 201210339426 CN 201210339426 A CN201210339426 A CN 201210339426A CN 103022191 A CN103022191 A CN 103022191A
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
Abstract
The invention discloses photovoltaic glass with a porous-structure and low-refractivity titanium dioxide antireflection coating. The photovoltaic glass comprises photovoltaic glass and the low-refractivity titanium dioxide antireflection coating, wherein a layer of low-refractivity titanium dioxide sols is coated on the surface of a substrate of the photovoltaic glass, and after the layer of sols is dried and cured, the porous-structure and low-refractivity titanium dioxide antireflection coating can be formed on the surface of the photovoltaic glass and forms a tight structure together with the photovoltaic glass. According to the mode, the titanium dioxide coating disclosed by the invention has the characteristics that the refection is reduced, the porous structure is formed, and the surface gloss and the refractivity are low, and thus the photovoltaic glass has a better characteristic of ageing resistance, has a photocatalysis function of a photo catalyst, and can greatly improve the generating efficiency of a photovoltaic assembly.
Description
Technical field
The present invention relates to the photovoltaic glass technical field, particularly relate to a kind of surface through the photovoltaic glass of low-refraction TiO 2 sol coating film treatment, form a kind of photovoltaic glass of cellular structure low-refraction titanium dioxide antireflective plated film.
Background technology
At present, well known solar photovoltaic conversion relies on is silicon chip in the solar module, silicon chip has good opto-electronic conversion effect, along with people's updating solar module, the photoelectric conversion rate of the silicon chip in the solar module has reached the limit on present technique production technique, the photoelectric conversion rate of wanting to improve again solar cell has become a difficult problem.Current workplace owing to solar cell is arranged in the middle of the abominable outdoor or desert of environment more, causes the solar module surface easily dirty, and is difficult to again after dirty clean.The method of now technology solution solar cell photoelectric transfer ratio one of them be: improve the solar cell photoelectric assembly as the light transmittance of the glass substrate of cover closing material, thereby reach the purpose that improves the relative electricity conversion of whole solar cell.In numerous photo-translating systems, can improve considerable part of light transmittance of glass substrate, key is that can the glass cover-plate on the solar components have the plated film that reduces reflectivity.
Titanium deoxid film has the high characteristic of refractive index, and wherein rutile-type crystallization refractive index is about 2.71, and anatase titanium dioxide crystallization refractive index is about 2.55, and therefore, titanium deoxid film has larger reflection and the ability of scattered light.
When incident light passes through the glass surface plated film, there are refraction and reflection to produce, when the light of refraction arrives at glass interface, also have refraction and reflection.Second reverberation R2 has walked film plating layer thickness distance twice than first reverberation R1 more.The optical thickness of supposing plated film is d, and then the optical path difference of R1 and R2 is 2d, and when optical path difference 2d equals the odd-multiple of half wavelength, the catoptrical phase difference of twice will be 180 °, produces destruction interference and cancels each other.From law of conservation of energy, reduce reverberation and then can increase penetrating light.So when the optical thickness of plated film was 1/4th odd-multiple of optical wavelength, the light reflectivity convergence that just can make its this optical wavelength was zero.Fixedly the thickness of plated film can only be to the light generation interference effect of fixed wave length to one, and the light that is different from this wavelength has higher reflectivity.Except the thickness of plated film, the material of plated film also is very important, the desirable refractive index of film
N=
, wherein
NairBe air refraction,
NglassBe glass refraction.
The way of antireflection film is divided into two large classes, the 1st class is to form sandwich construction with the mutual storehouse of the material of different refractivity together, or by the thickness of control storehouse and the refractive index of material, differ quarter-wave light wave when bumping together when two, will produce complete destruction interference, the light of reflection is offseted.Therefore, if the THICKNESS CONTROL of plated film at 1/4th of visible wavelength, can reach anti-reflective effect.The 2nd large class is called low-reflection film, when light enters glass substrate by air, the refractive index of known air (
Nair=1) and the refractive index of glass (
Nglass=1.52), reflect from air and substrate interface, then the reflection that causes of double-sided glass approximately is 7～8%.
Low-refraction antireflective titanium dioxide optics plated film is cellular structure, has lower refractive index characteristic, its principle is 1 because of the refractive index of air, the method of wanting to obtain than low-index material can be made loose structure to material, and the refractive index at hole place then is the ratio combination of the refractive index of the refractive index 1 of air and the material that uses.
Because the technical products of low-refraction titanium dioxide antireflective photovoltaic coated glass is not yet arranged, and the low-refraction titanium deoxid film is that an important technology is broken through in the antireflective application, therefore, developing low-refraction titanium dioxide antireflective photovoltaic coated glass is main purpose of the present invention.
Summary of the invention
The technical problem that the present invention mainly solves provides a kind of photovoltaic glass of cellular structure low-refraction titanium dioxide antireflective plated film, its TiO 2 coating film layer has the characteristics of antireflective, cellular structure, low surface gloss degree and low-refraction, can be so that photovoltaic glass has better anti-aging property, the photocatalysis usefulness of tool photocatalyst can promote the electricity generation efficiency of photovoltaic module greatly.
For solving the problems of the technologies described above, the technical scheme that the present invention adopts is: the photovoltaic glass that a kind of cellular structure low-refraction titanium dioxide antireflective plated film is provided, comprise the solar cell photoelectric assembly as the glass substrate of cover closing material, described glass substrate surface is covered with TiO 2 coating film.
Preferably, described TiO 2 coating film is the anticorrosive plated film of low-refraction titanium dioxide.
Preferably, described low-refraction TiO 2 sol synthesizes in glass substrate surface formation film.
Preferably, described film thickness is 100～200nm.。
Beneficial effect of the present invention is as follows:
1, low-refraction titanium dioxide antireflective photovoltaic coated glass of the present invention, its TiO 2 coating film layer has the characteristics of antireflective, cellular structure, low surface gloss degree and low-refraction.
2, low-refraction titanium dioxide antireflective photovoltaic coated glass of the present invention has better anti-aging property.
3, low-refraction titanium dioxide antireflective photovoltaic coated glass of the present invention, wherein titanium dioxide contains the anatase titanium dioxide crystal formation, so the photocatalysis usefulness of tool photocatalyst can promote the electricity generation efficiency of photovoltaic module greatly.
Description of drawings
Fig. 1 is the structural representation of the photovoltaic glass of a kind of cellular structure low-refraction of the present invention titanium dioxide antireflective plated film;
Fig. 2 is the light transmission rate spectrogram of the photovoltaic glass of a kind of cellular structure low-refraction of the present invention titanium dioxide antireflective plated film;
Fig. 3 is the photovoltaic glass surface glossiness comparison sheet of a kind of cellular structure low-refraction of the present invention titanium dioxide antireflective plated film.
Embodiment
Below in conjunction with accompanying drawing preferred embodiment of the present invention is described in detail, thereby so that advantages and features of the invention can be easier to be it will be appreciated by those skilled in the art that protection scope of the present invention is made more explicit defining.
Referring to Fig. 1, a kind of photovoltaic glass of cellular structure low-refraction titanium dioxide antireflective plated film, comprise by photovoltaic glass substrate 1 and low-refraction titanium dioxide antireflective plated film 2, surface-coated at photovoltaic glass substrate 1 has one deck low-refraction TiO 2 sol, can form one deck cellular structure low-refraction titanium dioxide antireflective plated film in the photovoltaic glass substrate surface after this coating drying is solidified, this cellular structure low-refraction titanium dioxide antireflective plated film and photovoltaic glass form tight structure.
Before the coating, through cleaning surfaces program cleaning photovoltaic glass substrate 1, apply again one deck low-refraction TiO 2 sol 2 first.
Embodiment 1:
In reactive tank, add 10 kilograms of deionized waters, get titanium tetrachloride 500 grams and add hydrolysis dilution in the reactive tank, form the titanium tetrachloride aqueous solution of about concentration 5%, slowly add with ammoniacal liquor and to carry out neutralization reaction and the adularescent sediment is separated out, keep to stir continue observe pH value and change, stopped to add ammoniacal liquor at 7.0 o'clock to pH value.After above-mentioned sediment cleaned purifying after filtration, forming white is about 300 grams of hydroxide of titanium, the hydroxide of titanium is inserted in the dispersion slot, add 50% concentration hydrogen peroxide, 878 grams and keep stirring fully reaction, add 2.07 kilograms of tetramethylsilanes in this dispersion liquid and fully stirring, add in this dispersion liquid the oxalic acid of 180 grams and fully stirring, with keeping stirring in about 95 kilograms of these dispersion liquids of adding of pure water the hydroxide of titanium is fully disperseed, the dispersion liquid temperature is heated to 55 ℃, is keeping the lasting ageing of this temperature to be the low-refraction TiO 2 sol after 48 hours.
Above-mentioned TiO 2 sol is coated on the photovoltaic glass substrate surface of average visible light penetrance as 91.5% take spraying process, and with 500 ℃ of hot setting films 5 minutes, can form an average visible light penetrance is 93.5% photovoltaic coated glass, detect its crystallization shape of this thin-film material with the X ray diffractometer and contain sharp titanium shape, detect its refractive index of this plated film as 1.48 take elliptic polarization spectrometer, much smaller than the refractive index 2.55 of pure anatase titanium dioxide, survey the about 103nm of this film thickness.
Embodiment 2:
In reactive tank, add 10 kilograms of deionized waters, get 5.5 kilograms of titanium tetrachlorides and add hydrolysis dilution in the reactive tank, form the titanium tetrachloride aqueous solution of about concentration 35%, slowly adding neutralization and adularescent sediment with sodium hydrate aqueous solution separates out, keep to stir continue observe pH value and change, stopped to add sodium hydrate aqueous solution at 9.0 o'clock to pH value.After above-mentioned sediment cleaned purifying after filtration, form about 3.3 kilograms of the hydroxide of white titanium, the hydroxide of titanium is inserted in the dispersion slot, add 44.872 kilograms of potassium permanganate solutions in this dispersion liquid and fully stirring, add 118.38 kilograms of tetraethyl silanes in this dispersion liquid and fully stirring, add 11.368 kilograms phosphoric acid in this dispersion liquid and fully stirring, with keeping stirring in about 5220 kilograms of these dispersion liquids of adding of pure water the hydroxide of titanium is fully disperseed, the dispersion liquid temperature is heated to 95 ℃, is keeping the lasting ageing of this temperature to be the low-refraction TiO 2 sol after 4 hours.
Above-mentioned TiO 2 sol is coated on the photovoltaic glass substrate surface of average visible light penetrance as 91.5% take spin-coating method, and with 800 ℃ of hot setting films 2 minutes, can form an average visible light penetrance is 94.8% photovoltaic coated glass, detect its crystallization shape of this thin-film material with the X ray diffractometer and contain sharp titanium shape, detect its refractive index of this film as 1.33 take elliptic polarization spectrometer, much smaller than the refractive index 2.55 of pure anatase titanium dioxide, survey the about 197nm of this film thickness.
Embodiment three:
In reactive tank, add 9 kilograms of deionized waters, get in 2.5 kilograms of addings of titanium sulfate reactive tank and dilute, form the titanium sulfate aqueous solution of about concentration 20%, slowly adding neutralization and adularescent sediment with potassium hydroxide aqueous solution separates out, keep to stir continue observe pH value and change, stopped to add sodium hydrate aqueous solution at 9.0 o'clock to pH value.After above-mentioned sediment cleaned purifying after filtration, form about 1.2 kilograms of the hydroxide of white titanium, filter cake is inserted in the dispersion slot, add 6.936 kilograms of concentration 50% aqueous hydrogen peroxide solutions in this dispersion liquid and fully stirring, add 29.43 kilograms of Tetraallylsilanes in this dispersion liquid and fully stirring, add 31.11 kilograms TPAOHs in this dispersion liquid and fully stirring, with keeping stirring in about 1495 kilograms of these dispersion liquids of adding of pure water the hydroxide of titanium is fully disperseed, the dispersion liquid temperature is heated to 75 ℃, is keeping the lasting ageing of this temperature to be the low-refraction TiO 2 sol after 24 hours.
Above-mentioned TiO 2 sol is coated on the photovoltaic glass substrate surface of average visible light penetrance as 91.5% take roll coating process, and with 300 ℃ of hot setting films 1 hour, can form an average visible light penetrance is 94.1% photovoltaic coated glass, detect its crystallization shape of this thin-film material with the X ray diffractometer and contain sharp titanium shape, detect its refractive index of this film as 1.41 take elliptic polarization spectrometer, much smaller than the refractive index 2.55 of pure anatase titanium dioxide, survey the about 148nm of this film thickness.
Shown in Fig. 2,3, the advantage of the photovoltaic glass of a kind of cellular structure low-refraction of the present invention titanium dioxide antireflective plated film is as follows:
1, low-refraction titanium dioxide antireflective photovoltaic coated glass of the present invention, its TiO 2 coating film layer has the characteristics of antireflective, cellular structure, low surface gloss degree and low-refraction.
2, low-refraction titanium dioxide antireflective photovoltaic coated glass of the present invention has better anti-aging property.
3, low-refraction titanium dioxide antireflective photovoltaic coated glass of the present invention, wherein titanium dioxide contains the anatase titanium dioxide crystal formation, so the photocatalysis usefulness of tool photocatalyst can promote the electricity generation efficiency of photovoltaic module greatly.
The above only is embodiments of the invention; be not so limit claim of the present invention; every equivalent structure or equivalent flow process conversion that utilizes specification of the present invention and accompanying drawing content to do; or directly or indirectly be used in other relevant technical fields, all in like manner be included in the scope of patent protection of the present invention.
Claims (4)
1. the photovoltaic glass of a cellular structure low-refraction titanium dioxide antireflective plated film, it is characterized in that: comprise the solar cell photoelectric assembly as the glass substrate of cover closing material, described glass substrate surface is covered with TiO 2 coating film.
2. the photovoltaic glass of a kind of cellular structure low-refraction titanium dioxide antireflective plated film according to claim 1, it is characterized in that: described TiO 2 coating film is low-refraction titanium dioxide antireflective plated film.
3. the photovoltaic glass of a kind of cellular structure low-refraction titanium dioxide antireflective plated film according to claim 2 is characterized in that: described low-refraction TiO 2 sol synthesizes in glass substrate surface and forms film.
4. the photovoltaic glass of a kind of cellular structure low-refraction titanium dioxide antireflective plated film according to claim 3, it is characterized in that: described film thickness is 100～200nm.
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| CN108054218A (en) * | 2017-12-16 | 2018-05-18 | 天津市瓦克新能源科技有限公司 | A kind of composite reflective film silicon nitride solar panel preparation method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108054218A (en) * | 2017-12-16 | 2018-05-18 | 天津市瓦克新能源科技有限公司 | A kind of composite reflective film silicon nitride solar panel preparation method |
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Application publication date: 20130403 |