CN101951189A - Large area fluorescent concentrator solar cell system - Google Patents
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- CN101951189A CN101951189A CN2010102561498A CN201010256149A CN101951189A CN 101951189 A CN101951189 A CN 101951189A CN 2010102561498 A CN2010102561498 A CN 2010102561498A CN 201010256149 A CN201010256149 A CN 201010256149A CN 101951189 A CN101951189 A CN 101951189A
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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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Abstract
The invention relates to a large area fluorescent concentrator solar cell system and a manufacturing method thereof, belonging to the technical field of solar power generation and aiming at solving the technical problem of higher generation cost of the traditional solar cell. The generating system comprises at least one fluorescent concentrator comprising or not comprising a reflecting layer, a light guide plate provided with scattering points and formed on a specific area of the fluorescent concentrator, as well as a solar cell installed on the light guide plate and an assembly thereof. The invention has the characteristic that by manufacturing the light guide plate with small light-emitting area on the specific area of the fluorescent concentrator with larger illuminated area so as to provide a light concentration effect for the solar cell in place of the ratio of the illuminated area to the side area of the fluorescent concentrator, the large area fluorescent concentrator solar cell system is obtained under the common solar cell packaging process, and thus, material and processing cost are saved.
Description
Technical field
The present invention relates to solar energy generation technology, particularly relate to a kind of large tracts of land fluorescence concentrating solar battery system and manufacture method thereof.
Background technology
Solar cell enlarges day by day in the ratio of energy market, but still following shortcoming is arranged:
1) solar cell such as high efficiency monocrystalline silicon in the urban architecture curtain wall because can not become best angle with sunlight, thereby had a strong impact on energy conversion efficiency;
2) cost of electricity-generating of thin-film solar cells such as amorphous silicon that is used for the less expensive in scale power station still is higher than traditional mode far away.
Sunlight optically focused technology is owing to the generated output that can use comparatively cheap material to improve the unit are solar cell enjoys people's attention.
Present sunlight optically focused technology has three kinds of focus type, reflect type and fluorescence optically focused.
Focus type and reflect type optically focused technology have following defective: need the configuration sun tracker, thereby expenditure cost is higher, and owing to can converge light all in the solar spectrum when optically focused, the heat accumulative total that the sunlight in the solar spectrum outside the effective wavelength range produces can influence the generating efficiency and the useful life of solar cell.
Fluorescence optically focused technology can utilize the fluorescence concentrator sunlight that photoelectric conversion efficiency is low to be converted to the fluorescence of high-quantum efficiency, and utilize total reflection principle to carry out light and converge, thereby can be under the situation of avoiding heat accumulative total, realize the spotlight effect of the fluorescence of high-quantum efficiency, thereby at utmost improve the photoelectric conversion efficiency of the solar cell of unit are; And fluorescence optically focused technology can utilize the sunlight of arbitrarily angled incident, need not to dispose sun tracker; Thereby compare the sunlight optically focused technology of common solar cell or focus type and reflect type, can both reduce the cost of electricity-generating of solar cells such as high efficiency monocrystalline silicon.
But present fluorescence concentrator utilizes the ratio of daylighting area and emission side area that the spotlight effect of equivalence is provided for solar cell, thereby has a following defective: at first, the light concentrating times of the daylighting area that diameter is 10 centimetres is just near maximum, in order to make full use of material, larger area fluorescence concentrator need be cut, make to be difficult to utilize general solar cell package technology, thereby increase processing cost; Secondly, it is also uneconomical less than 1mm that the solar cell of the light emission side of corresponding fluorescence concentrator is cut into width, makes the thickness of fluorescence concentrator side be difficult to drop to below the 1mm, thereby increased material cost.A kind of fluorescence concentrator is for example disclosed in the Massachusetts Institute Technology in July, 2008, this concentrator is because adopt glass of high refractive index to improve the effect of fluorescence optically focused, but get glass of high refractive index in the face of price is high, the size that is difficult to reduce the thickness of glass and increases glass just means the influence of cost of electricity-generating also not obvious.The disclosed a kind of photovoltaic power generation system of fluorescent optical fiber solar battery of Chinese patent 200810195726.X for example again can run into because of the fibre diameter difficulty in process of the solar cell coupling that comes of faciola too.
Summary of the invention
At the defective that exists in the above-mentioned prior art, technical problem to be solved by this invention is a kind of spotlight effect that the ratio of the light-receiving area that is not subject to the fluorescence concentrator and emission side area can be provided for solar cell, save the material and the processing cost of fluorescence concentrator, and on the basis of merging high efficiency batteries such as comparatively economic amorphous silicon membrane battery and monocrystalline silicon, reduce the cost of solar cell power generation.
In order to solve the problems of the technologies described above, a kind of large tracts of land fluorescence concentrating solar battery system provided by the present invention and manufacture method thereof is characterized in that, comprising:
At least one contains or does not contain the fluorescence concentrator in reflector, and has the scattering point light guide plate that forms and the solar cell and the combination thereof that are installed on the light guide plate on the specific region of fluorescence concentrator.
Further, described fluorescence concentrator is one of following three kinds of situations: the transparency carrier or the fiber that are doped with at least a fluorescent material, transparency carrier or fiber have the film that is doped with at least a fluorescent material, have the light-emitting film that is doped with at least a fluorescent material and the light-leading film of the luminous wave band of fluorescent material on the substrate.
Further, described light guide plate is the specific region that has scattering point on the light-leading film, can be silk screen printing comprise fluorescent material in interior distribution of particles zone, can be the zone of laser or mechanical engraving moulding, also can be the formed in mould zone that has micro-structural that electroforming forms.。
Further, the described material that is used for transparent substrate or fiber or light-leading film has higher penetrating rate and refractive index at the wavelength place that adjacent light-emitting film is launched.
Further, preferably including two fluorescence concentrator and utilizations that have light guide plate contains or does not contain through being doped with the glue of at least a fluorescent material, by the two-sided solar cell and the combination thereof that is subjected to light of lamination encapsulation;
One of described two fluorescence concentrators preferably contain the light-emitting film that has vacuum moulding machine or spin coating on the substrate of metallic reflector, and adjacent light-leading film, wherein light guide plate preferably utilizes the mould that has micro-structural of electroforming formation to form on the specific region of described light-leading film.
Two of described two fluorescence concentrators preferably utilize the electrically conducting transparent back electrode or do not make on the amorphous silicon membrane battery sheet of back electrode vacuum moulding machine as yet or the spin coating light-emitting film forms, and wherein light guide plate preferably utilizes laser engraving to form on the specific region of electrically conducting transparent back electrode.
Described fluorescent material comprises the Coumarins dyestuff, perylene kinds dyestuff, terylene carboxylic acid derivates class dyestuff, semiconductor-quantum-point and the luminescent substance that contains rare earth element.
Further, described light-leading film contains tin, titanium, zinc, the oxide of at least a elements such as silicon and zirconium or nitride or sulfide or its compound at least for what utilize preferably that film plating process such as magnetron sputtering or CVD make.
Further, the positive and negative electrode of described solar cell can link to each other with the electrode of metallic reflector or non-crystal silicon solar cell, realizes the series and parallel combination by laser scribing.
Further, described Coumarins fluorescent material includes oxine aluminium and the 4-methylene dicyanoethyl-2-tert-butyl group-6-(1,1,7, the 7-tetramethyl is coughed up Ding Ji-9-thiazolinyl for a long time)-4H-pyrans, and its molar ratio is between 0.1% to 10%.
Further, described semiconductor-quantum-point contains any or its combination in cadmium sulfide, cadmium selenide, vulcanized lead or the mercury cadmium telluride, and the described luminescent substance that contains rare earth element contains Ce
3+, Pr
3+, Sm
3+, Nd
3+And Yb
3+Etc. a kind of or its combination.
Large tracts of land fluorescence concentrating solar battery system provided by the invention and manufacture method thereof have following beneficial effect:
1), replaces the ratio of fluorescence concentrator light-receiving area and emission side area, for solar cell provides spotlight effect owing to the less light guide plate of light-emitting area of on the bigger fluorescence concentrator of light-receiving area, making.Under the general solar battery packaging technology, realized the possibility of large tracts of land fluorescence concentrating solar battery system, thereby saved material and processing cost;
2) encapsulation of fluorescence condenser system of the present invention is only accepted the long wavelength light irradiation because the solar cell sensitive surface does not need to face adverse circumstances, can greatly reduce the cost of the encapsulation glue that increases because prevent ultraviolet ageing and electic protection simultaneously.
3) owing to pass through the light guide plate of two fluorescence concentrators up and down, especially under the situation of amorphous silicon battery with less expensive as one of them, produce spotlight effect simultaneously at the monocrystalline silicon of greater efficiency or two sensitive surfaces of other solar cells, thereby improve the output energy of equal area solar cell;
4),, provide the BIPV product of higher price-performance ratio therefore in the building curtain wall of vertically installing and the serious city of shading because the fluorescence concentrator is not influenced by the angle of light degree;
5) the present invention has greatly reduced the cost of solar cell power generation by reducing material and processing cost and two-sided optically focused.
Description of drawings
Fig. 1 is the structural representation of the basic large tracts of land fluorescence concentrating solar battery system of the embodiment of the invention;
Fig. 2 is the structural representation of large tracts of land fluorescence concentrating solar battery system of the combination of the embodiment of the invention;
Embodiment
Below in conjunction with description of drawings embodiments of the invention are described in further detail, but present embodiment is not limited to the present invention, every employing analog structure of the present invention and similar variation thereof all should be listed protection scope of the present invention in.
A kind of large tracts of land fluorescence concentrating solar battery system provided by the present invention and manufacture method thereof is characterized in that, comprising:
The solar cell of high conversion efficiency such as monocrystalline silicon and the sensitive surface of combination thereof are contained on the light guide plate of fluorescence concentrator by mucilage sealing;
One of described fluorescence concentrator is by substrate, contains or does not contain metallic reflector and form, and light-emitting film and light-leading film are formed; The mould that has micro-structural that its light guide plate preferably utilizes electroforming to form forms on the specific region of described light-leading film;
Described fluorescence concentrator two for forming by electrically conducting transparent back electrode or amorphous silicon membrane battery sheet and the light-emitting film of not making back electrode as yet, its light guide plate is scattering point and the back electrode film composition that utilizes laser engraving to form on the specific region of electrically conducting transparent back electrode.
Described light-leading film contains tin, titanium, zinc, the oxide of at least a elements such as silicon and zirconium or nitride or sulfide or its compound at least for what utilize preferably that film plating process such as magnetron sputtering or CVD make.
The positive and negative electrode of described solar cell links to each other with the electrode of metallic reflector or non-crystal silicon solar cell, realizes the series and parallel combination by laser scribing.
Described fluorescent material comprises the Coumarins dyestuff, perylene kinds dyestuff, terylene carboxylic acid derivates class dyestuff, semiconductor-quantum-point and the luminescent substance that contains rare earth element.
Further, described Coumarins fluorescent material includes oxine aluminium and the 4-methylene dicyanoethyl-2-tert-butyl group-6-(1,1,7, the 7-tetramethyl is coughed up Ding Ji-9-thiazolinyl for a long time)-4H-pyrans, and its molar ratio is between 0.1% to 10%.
Further, described semiconductor-quantum-point contains any or its combination in cadmium sulfide, cadmium selenide, vulcanized lead or the mercury cadmium telluride, and the described luminescent substance that contains rare earth element contains Ce
3+, Pr
3+, Sm
3+, Nd
3+And Yb
3+Etc. a kind of or its combination.
In the first embodiment of the present invention,, provided the structure of basic large tracts of land fluorescence concentrating solar battery electricity generation system referring to Fig. 1:
The wide photoelectric conversion efficiency of 50x1mm is that the sensitive surface of 15% monocrystaline silicon solar cell 106 is in the face of light guide plate, by adhering with epoxy resin together.The positive and negative electrode of monocrystaline silicon solar cell 106 links to each other with aluminium reflector 102, by the connection in series-parallel of laser scribing 107 batteries.
When AM1.5 illumination 108 and 25 ℃, the photoelectric conversion efficiency of this solar cell system is 3%.By calculating as can be known, above-mentioned fluorescence condenser system utilizes cheap fluorescence concentrator and general monocrystaline silicon solar cell packaging technology, makes the power output of solar cell surpass original three times.
In the second embodiment of the present invention, referring to Fig. 2, the structure of the large tracts of land fluorescence concentrating solar battery electricity generation system of combination:
The two-sided solar cell 201 that is subjected to light is encapsulated between fluorescence concentrator and the following fluorescence concentrator by the PUR 202 that contains CdSe quantum dots;
The amorphous silicon battery sheet and the encapsulation be made up of transparent conducting glass 203 and amorphous silicon membrane 204 and electrically conducting transparent back electrode 205 of last fluorescence concentrator are formed with PUR 202, and its light guide plate is the scattering point composition that utilizes laser engraving to form on electrically conducting transparent back electrode 205 specific regions.
Following fluorescence concentrator is by glass-mirror substrate 206, and light-emitting film 207 and tin oxide light-leading film 208 are formed; Its light guide plate is that the scattering point that utilizes laser engraving to form on tin oxide light-leading film 208 specific regions is formed.
On electrically conducting transparent back electrode 205, be parallel to the laser scribing of non-crystal silicon solar cell, and comprise the wide light guide plate 209 of this line making 1mm; Corresponding position makes same light guide plate 210 on the SnO 2 thin film 208.Light guide plate is that the scattering point of 0.05mm is formed by the diameter of spacing optimization.
The wide photoelectric conversion efficiency of 1mm is that 15% the rectangular back side of monocrystaline silicon solar cell is to sticking, form the two-sided solar cell 201 that is subjected to light, sensitive surface utilizes the PUR 202 that contains CdSe quantum dots to be encapsulated between fluorescence concentrator and the following fluorescence concentrator respectively in the face of the light guide plate on electrically conducting transparent back electrode 205 and the SnO 2 thin film 208.The positive and negative electrode of monocrystaline silicon solar cell 201 and the series-parallel circuit of amorphous silicon battery organically combine.
This example can make full use of the sunlight that non-crystal silicon solar cell do not utilize as yet and generate electricity on the common processes basis of non-crystal silicon solar cell encapsulation, has improved the solar power generation amount of unit are.
Claims (10)
1. large tracts of land fluorescence concentrating solar battery system and manufacture method thereof, it is characterized in that, this electricity generation system comprises that at least one contains or do not contain the fluorescence concentrator in reflector, and has the scattering point light guide plate that forms and the solar cell and the combination thereof that are installed on the light guide plate on the specific region of fluorescence concentrator.
2. system according to claim 1 and manufacture method thereof, it is characterized in that: described fluorescence concentrator is one of following three kinds of situations: the transparency carrier or the fiber that are doped with at least a fluorescent material, transparency carrier or fiber have the film that is doped with at least a fluorescent material, have the light-emitting film that is doped with at least a fluorescent material and the light-leading film of the luminous wave band of fluorescent material on the substrate.
3. system according to claim 1 and manufacture method thereof, it is characterized in that: described light guide plate is the specific region that has scattering point on the light-leading film, can be silk screen printing comprise fluorescent material in interior distribution of particles zone, can be the zone of laser or mechanical engraving moulding, also can be the formed in mould zone that has micro-structural that electroforming forms.
4. system according to claim 2 is characterized in that: the described material that is used for transparent substrate or fiber or light-leading film has higher penetrating rate and refractive index at the wavelength place that adjacent light-emitting film is launched.
5. according to claim 1,2 and 3 described system and manufacture methods thereof, it is characterized in that: preferably include two fluorescence concentrators that have light guide plate, contain or do not contain with utilization through being doped with the glue of at least a fluorescent material, made up by the solar cell of light or its by lamination encapsulation two-sided;
One of described two fluorescence concentrators preferably contain the light-emitting film that has vacuum moulding machine or spin coating on the substrate of metallic reflector, and adjacent light-leading film, wherein light guide plate preferably utilizes the mould that has micro-structural of electroforming formation to form on the specific region of described light-leading film.
Two of described two fluorescence concentrators preferably utilize the electrically conducting transparent back electrode or do not make on the amorphous silicon membrane battery sheet of back electrode vacuum moulding machine as yet or the spin coating light-emitting film forms, and wherein light guide plate preferably utilizes laser engraving to form on the specific region of electrically conducting transparent back electrode.
6. according to claim 2,3,4 and 5 described systems is characterized in that: described fluorescent material comprises the Coumarins dyestuff, perylene kinds dyestuff, terylene carboxylic acid derivates class dyestuff, semiconductor-quantum-point and the luminescent substance that contains rare earth element.
7. according to claim 4 and 5 described system and manufacture methods, it is characterized in that: described light-leading film contains tin at least for what utilize preferably that film plating process such as magnetron sputtering or CVD make, titanium, zinc, the oxide of at least a elements such as silicon and zirconium or nitride or sulfide or its compound.
8. system according to claim 5 and manufacture method is characterized in that: the positive and negative electrode of solar cell can link to each other with the electrode of metallic reflector or non-crystal silicon solar cell, realizes the series and parallel combination by laser scribing.
9. system according to claim 6, it is characterized in that: described Coumarins fluorescent material includes oxine aluminium and the 4-methylene dicyanoethyl-2-tert-butyl group-6-(1,1,7, the 7-tetramethyl is coughed up Ding Ji-9-thiazolinyl for a long time)-the 4H-pyrans, its molar ratio is between 0.1% to 10%.
10. system according to claim 6 is characterized in that: described semiconductor-quantum-point contains any or its combination in cadmium sulfide, cadmium selenide, vulcanized lead or the mercury cadmium telluride, and the described luminescent substance that contains rare earth element contains Ce
3+, Pr
3+, Sm
3+, Nd
3+And Yb
3+Etc. a kind of or its combination.
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102254976A (en) * | 2011-06-29 | 2011-11-23 | 深圳光启高等理工研究院 | Double-sided solar cell component |
| CN103151431A (en) * | 2011-12-06 | 2013-06-12 | 杜邦太阳能有限公司 | Solar module and manufacturing method thereof |
| US9256018B2 (en) | 2009-03-12 | 2016-02-09 | Morgan Solar Inc. | Stimulated emission luminescent light-guide solar concentrators |
| US9263605B1 (en) | 2011-04-20 | 2016-02-16 | Morgan Solar Inc. | Pulsed stimulated emission luminescent photovoltaic solar concentrator |
| CN105763138A (en) * | 2016-03-10 | 2016-07-13 | 南京熊猫电子股份有限公司 | Integrated light guide plate type photovoltaic generating set |
| CN106229371A (en) * | 2016-08-30 | 2016-12-14 | 电子科技大学 | Fluorescence waveguide concentration module, device of solar generating and application thereof |
| TWI575766B (en) * | 2015-05-05 | 2017-03-21 | 飛立威光能股份有限公司 | Photovoltaic system and method of manufacturing same |
| CN106549479A (en) * | 2016-12-06 | 2017-03-29 | 东北大学 | A kind of compound energy system |
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