CN103311332A - Solar module and manufacturing method thereof - Google Patents
Solar module and manufacturing method thereof Download PDFInfo
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- CN103311332A CN103311332A CN2012100634277A CN201210063427A CN103311332A CN 103311332 A CN103311332 A CN 103311332A CN 2012100634277 A CN2012100634277 A CN 2012100634277A CN 201210063427 A CN201210063427 A CN 201210063427A CN 103311332 A CN103311332 A CN 103311332A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- 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
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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Abstract
The invention provides a solar module and a manufacturing method thereof. The solar module successively consists of a scattering film, glass, a front transparent conductive oxide layer, a semiconductor layer, a back conductive layer and a packaging material from a light incident surface. The scattering film comprises an adhesive, a solvent and nano particles. The refractive index of the scattering film is greater than the refractive index of air and less than the refractive index of glass. By using the middle refractive index between the refractive index of air and the refractive index of glass to reduce reflection, and by using the scattering film comprising the nano particles to increase the glass haze, the light transmission quantity into the film solar cell semiconductor layer is increased, and the light absorption quantity of the film solar cell semiconductor layer is further increased.
Description
Technical field
The present invention relates to thin-film solar cells, relate in particular to solar modules and manufacture method thereof.
Background technology
Thin-film solar cells is that semiconductive thin film is deposited on the battery that forms on the carrier, and under illumination condition, semiconductive thin film is electric energy with light energy conversion, and by front electrode and back electrode electric energy is exported.Transparent conductive oxide plated film (TCO) glass is owing to having transparent, conduction and light wave had optionally characteristics, and is widely used in the fields such as electrode before the solar cell, plane liquid crystal display (LCD), hot mirror and glass curtain wall.
Because light can reflect at two-layer different medium place, the two media refractive index differs larger, reflects also greatlyr, so TCO glass is as having antireflecting function, can allow most of light enter semiconductor layer (being light absorbing zone), to increase photoelectric conversion efficiency.The refractive index n of air
AirBe 1, the refractive index n of glass
GlassBe 1.5, common way is the front surface coating one deck middle refractive index n at TCO glass
ARCThe dielectric film of (1～1.5) weakens reflection of light as antireflective coating (ARC), and the thickness of dielectric film is 1/4 of wavelength of light at least.Figure 1 shows that the TCO glass that is not coated with antireflective coating, air refraction is 1, glass refraction 10 is 1.5, including transparent conducting oxide layer 11 refractive indexes are 2.0, the contact-making surface of air and glass can reflect the incident light 4.0% of total amount, the contact-making surface of glass and including transparent conducting oxide layer reflects the incident light 2.0% of total amount, and total reverberation accounts for 6.0% of incident light total amount.Figure 2 shows that the TCO glass at glass front coating antireflective coating, the refractive index of dielectric film is 1.2, thickness is the product of 1/4 and dielectric film refractive index of wavelength of light, the contact-making surface of air and antireflective coating 22 reflects the incident light 1.1% of total amount, antireflective coating 22 reflects the incident light 1.0% of total amount with the contact-making surface of glass 20, glass 20 reflects the incident light 2.0% of total amount with the contact-making surface of including transparent conducting oxide layer 21, total reverberation accounts for 4.1% of incident light total amount, and the incident light total amount of transmission has improved 1.9% than the situation of uncoated antireflective coating.
In order to increase the light absorbing ability of thin-film solar cells semiconductor layer, TCO glass need to improve the scattering power to transmitted light, scattering power represents with mist degree, mist degree is the inside of transparent or semitransparent material or surface because the cloud that causes of light diffusion or muddy outward appearance, represents with the luminous flux of the diffusion percentage with the ratio of the luminous flux of transparent material.Generally, including transparent conducting oxide layer can and have certain mist degree through the atomizing processing, and the reaction optical wavelength that haze value and TCO glass need is proportional.As shown in Figure 3, the TCO glass that is coated with antireflective coating comprise glass substrate 30, the front including transparent conducting oxide layer 31 through atomizing is processed, semiconductor layer 33, after the antireflective coating 32 of including transparent conducting oxide layer 34, encapsulating material 35 and the coating of glass substrate 30 front surfaces.Scattered light has longer light path in the TCO glass through atomizing, therefore absorbed probability is larger.But the including transparent conducting oxide layer of atomizing can be with and serve unavoidable defective, and for example thickness is seriously uneven between the including transparent conducting oxide layer of high atomisation and the semiconductor layer, even the unlapped point of including transparent conducting oxide layer can occur.
Summary of the invention
The problem that the present invention solves is in order to increase the light absorbing amount of thin-film solar cells semiconductor layer.
For addressing the above problem, the invention provides a kind of solar modules, comprise successively scattering film, glass, front including transparent conducting oxide layer, semiconductor layer, rear conductive layer and encapsulating material by light entrance face, described scattering film comprises adhesive, solvent and nanoparticle, and the refractive index of described scattering film is greater than the refractive index of air and less than the refractive index of glass.
Alternatively, the thickness of described scattering film is greater than or equal to 1/4th of reaction optical wavelength.
Alternatively, described scattering film comprises the nanoparticle of multiple diameter, the reaction light of the corresponding wave band of the nanoparticle of every kind of diameter.
The present invention also provides a kind of transparent conductive oxide coated glass manufacture method, comprising: at first, and including transparent conducting oxide layer, semiconductor layer, rear conductive layer before on a surface of glass substrate, forming successively; Then, after initial or all laser scribe process are finished, the mixing material of nanoparticle, adhesive and solvent is uniformly coated on another surface of described glass substrate by spraying equipment; Next, be cured by the wet film of high-temperature baking to coating, form the scattering film on another surface of described glass substrate; At last, carry out the final encapsulation of solar modules by lamination and curing materials technique.
Alternatively, described high-temperature baking curing process and curing materials technique are carried out together.
Compared with prior art, the present invention has the following advantages:
1) at TCO glass front coating scattering film, thereby reduce reflection by the middle refractive index between air refraction and glass refraction, and by comprising the scattering film increase glass mist degree of nanoparticle, increase the output optical transmission that enters the thin-film solar cells semiconductor layer, and then increase the light absorbing amount of thin-film solar cells semiconductor layer;
2) the scattering film coated, just can be used as antireflective coating as long as thickness is greater than or equal to 1/4 of reaction optical wavelength simultaneously in the TCO glass front, improves the incident light total amount of transmission, and need not increase extra coating;
3) the scattering film comprises the nanoparticle of multiple diameter, and the absorbable reaction light wavelength of TCO glass scope is large.
Description of drawings
Fig. 1 is the schematic diagram of the TCO glass incident light volume reflection of uncoated antireflective coating;
Fig. 2 is the schematic diagram of the TCO glass incident light volume reflection of coating antireflective coating;
Fig. 3 is the schematic diagram of existing TCO glass structure;
Fig. 4 is a kind of example structure schematic diagram of the TCO glass in the solar modules of the present invention.
Embodiment
Be illustrated in figure 4 as the TCO glass structure figure of a kind of embodiment of the solar modules according to the present invention, comprise successively scattering film 45, glassy layer 40, front including transparent conducting oxide layer 41, semiconductor layer 42, rear conductive layer 43 and encapsulating material 44 from light entrance face.Front including transparent conducting oxide layer 41 is as front electrode, and rear conductive layer 43 is as back electrode, and semiconductor layer 42 is light absorbing zone.
Wherein, scattering film 45 comprises adhesive (not shown), solvent (not shown) and nanoparticle 451, and the diameter of described nanoparticle 451 is less than or equal to the reaction light wavelength.
Nanoparticle 451 can realize the reaction scattering of light is increased the propagation path of reaction light in TCO glass, and the absorbed probability of augmenting response light realizes that TCO glass is to the requirement of mist degree.
According to one embodiment of present invention, the adhesive of scattering film 45 can adopt the synthetic silicon polymer of sol-gal process, described solvent is any one in the compound of water-based, acidity, Alcoholic or ketone, and nanoparticle 451 can be silicon dioxide microparticle.
Need to absorb the reaction light time of some wave bands when TCO glass, the diameter of the nanoparticle 451 in the described scattering film can be less than or equal to the reaction optical wavelength of this wave band.Be that take nanoparticle 451 as silicon dioxide microparticle example, the diameter of silicon dioxide microparticle are less than or equal to react optical wavelength, the distribution spacing of particulate equals 0.5～1 times reaction optical wavelength at least.Thus, can increase the scattering efficiency of reaction light in silicon dioxide microparticle, to increase output optical transmission.
The reaction optical wavelength range that needs when TCO glass is 300nm～1400nm, can comprise the silicon dioxide microparticle of multiple diameter in the scattering film, to realize wide region reaction Optical Absorption.The reaction light of the corresponding wave band of the silicon dioxide microparticle of every kind of diameter is to realize that the distribution spacing of the silicon dioxide microparticle of every kind of diameter equals 0.5～1 times reaction optical wavelength at least to this wave band reaction scattering of light.
According to other embodiments of the invention, the thickness of scattering film 45 can be greater than or equal to the diameter of silicon dioxide microparticle, and silicon dioxide microparticle is included in film inside.
According to other embodiments of the invention, the thickness of described scattering film 45 can be greater than or equal to 1/4 of reaction optical wavelength.Scattering film 45 can simultaneously as antireflective coating, reduce the reaction reflection of light that TCO glass needs, and not need to increase extra coating like this.Therefore the refractive index of scattering film is the mean value of air, silicon dioxide microparticle and adhesive refractive index, is greater than air refraction but less than a middle refractive index of glass refraction.
Rear conductive layer 43 as shown in Figure 4 also plays the effect in reflector, will react light and be reflected back semiconductor layer 42, further increases the probability of reaction light absorption, improves absorptivity.The material of described rear conductive layer 43 can be for example transparent conductive oxide.
According to other embodiments of the invention, the front including transparent conducting oxide layer 41 of TCO glass shown in Figure 4 has also passed through atomization process, but because glass front is coated with the scattering film, can improve scattering power, therefore including transparent conducting oxide layer 41 does not need high atomisation before, the serious uneven even unlapped situation of thickness can not occur.
The invention provides a kind of manufacture method of transparent conductive oxide glass, comprising:
At first, on a surface of glass substrate, form successively before including transparent conducting oxide layer, semiconductor layer, rear conductive layer;
Then, after initial or all laser scribe process are finished, the mixing material of nanoparticle, adhesive and solvent is uniformly coated on another surface of described glass substrate by spraying equipment;
Next, be cured by the wet film of high-temperature baking to coating, form the scattering film on another surface of described glass substrate;
At last, carry out the final encapsulation of solar modules by lamination and curing materials technique.
According to another embodiment of the invention, described high-temperature baking curing process and curing materials technique can be carried out together.
Although the present invention discloses as above with preferred embodiment, the present invention is defined in this.Any those skilled in the art without departing from the spirit and scope of the present invention, all can make various changes or modifications, so protection scope of the present invention should be as the criterion with the claim limited range.
Claims (9)
1. solar modules, it is characterized in that, comprise successively scattering film, glass, front including transparent conducting oxide layer, semiconductor layer, rear conductive layer and encapsulating material by light entrance face, described scattering film comprises adhesive, solvent and nanoparticle, and the refractive index of described scattering film is greater than the refractive index of air and less than the refractive index of glass.
2. solar modules as claimed in claim 1 is characterized in that, the diameter of described nanoparticle is less than or equal to the reaction light wavelength.
3. solar modules as claimed in claim 1 is characterized in that, the distribution spacing of described nanoparticle equals 0.5～1 times reaction light wavelength at least.
4. solar modules as claimed in claim 2 or claim 3 is characterized in that, described reaction light wavelength is 300 nanometer to 1400 nanometers.
5. solar modules as claimed in claim 2 or claim 3 is characterized in that, described scattering film comprises the nanoparticle of multiple diameter, the reaction light of the corresponding wave band of the nanoparticle of every kind of diameter.
6. transparent conductive oxide coated glass as claimed in claim 1 is characterized in that, described nanoparticle is silicon dioxide microparticle; Described solvent is any one in the compound of water-based, acidity, Alcoholic or ketone; Described adhesive is for adopting the synthetic silicon polymer of sol-gal process.
7. solar modules as claimed in claim 1 is characterized in that, the thickness of described scattering film is greater than or equal to 1/4th of reaction optical wavelength.
8. the manufacture method of a solar modules is characterized in that, comprising:
At first, on a surface of glass substrate, form successively before including transparent conducting oxide layer, semiconductor layer, rear conductive layer;
Then, after initial or all laser scribe process are finished, the mixing material of nanoparticle, adhesive and solvent is uniformly coated on another surface of described glass substrate by spraying equipment;
Next, be cured by the wet film of high-temperature baking to coating, form the scattering film on another surface of described glass substrate;
At last, carry out the final encapsulation of solar modules by lamination and curing materials technique.
9. the manufacture method of solar modules as claimed in claim 8 is characterized in that, described high-temperature baking curing process and curing materials technique are carried out together.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN2012100634277A CN103311332A (en) | 2012-03-12 | 2012-03-12 | Solar module and manufacturing method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012100634277A CN103311332A (en) | 2012-03-12 | 2012-03-12 | Solar module and manufacturing method thereof |
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| CN103311332A true CN103311332A (en) | 2013-09-18 |
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| CN2012100634277A Pending CN103311332A (en) | 2012-03-12 | 2012-03-12 | Solar module and manufacturing method thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106784327A (en) * | 2016-12-29 | 2017-05-31 | 西安联创先进制造专业孵化器有限公司 | Enhanced organic thin film solar cell of a kind of nano-particle and preparation method thereof |
| CN110120430A (en) * | 2018-01-30 | 2019-08-13 | 法国圣戈班玻璃厂 | With the photovoltaic module of cover-plate glass of partial structurtes and preparation method thereof with improvement mist degree |
| CN113416501A (en) * | 2021-06-16 | 2021-09-21 | 常州百佳年代薄膜科技股份有限公司 | Composite adhesive film, photovoltaic module and irradiation light reflection method for composite adhesive film |
Citations (4)
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| CN1786747A (en) * | 2004-12-10 | 2006-06-14 | 三菱重工业株式会社 | Light-scattering film and optical device using the same |
| CN1941421A (en) * | 2005-09-29 | 2007-04-04 | 董毓 | Solar battery with scatter |
| US20100167012A1 (en) * | 2007-05-23 | 2010-07-01 | Teijin Dupont Films Japan Limited | Multi-layer film for use as a solar cell substrate |
| CN101960919A (en) * | 2008-02-27 | 2011-01-26 | 皇家飞利浦电子股份有限公司 | The organic electro-optic device of hiding with light scattering layer |
-
2012
- 2012-03-12 CN CN2012100634277A patent/CN103311332A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1786747A (en) * | 2004-12-10 | 2006-06-14 | 三菱重工业株式会社 | Light-scattering film and optical device using the same |
| CN1941421A (en) * | 2005-09-29 | 2007-04-04 | 董毓 | Solar battery with scatter |
| US20100167012A1 (en) * | 2007-05-23 | 2010-07-01 | Teijin Dupont Films Japan Limited | Multi-layer film for use as a solar cell substrate |
| CN101960919A (en) * | 2008-02-27 | 2011-01-26 | 皇家飞利浦电子股份有限公司 | The organic electro-optic device of hiding with light scattering layer |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106784327A (en) * | 2016-12-29 | 2017-05-31 | 西安联创先进制造专业孵化器有限公司 | Enhanced organic thin film solar cell of a kind of nano-particle and preparation method thereof |
| CN106784327B (en) * | 2016-12-29 | 2019-07-02 | 西安联创先进制造专业孵化器有限公司 | A kind of organic thin film solar cell and preparation method thereof of nanoparticle enhancing |
| CN110120430A (en) * | 2018-01-30 | 2019-08-13 | 法国圣戈班玻璃厂 | With the photovoltaic module of cover-plate glass of partial structurtes and preparation method thereof with improvement mist degree |
| CN113416501A (en) * | 2021-06-16 | 2021-09-21 | 常州百佳年代薄膜科技股份有限公司 | Composite adhesive film, photovoltaic module and irradiation light reflection method for composite adhesive film |
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Application publication date: 20130918 |