CN202178283U - Amorphous silicon film solar cell packed by CNT silica gel - Google Patents
Amorphous silicon film solar cell packed by CNT silica gel Download PDFInfo
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- CN202178283U CN202178283U CN2011200442634U CN201120044263U CN202178283U CN 202178283 U CN202178283 U CN 202178283U CN 2011200442634 U CN2011200442634 U CN 2011200442634U CN 201120044263 U CN201120044263 U CN 201120044263U CN 202178283 U CN202178283 U CN 202178283U
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- amorphous silicon
- silica gel
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- film solar
- solar cell
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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
- Y02E10/548—Amorphous silicon PV cells
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Abstract
The utility model discloses an amorphous silicon film solar cell packed by CNT (carbon nano-tube) silica gel, belonging to the solar cell and new energy field, and especially used for a pin type amorphous silicon film solar cell. A counter-light side of the amorphous silicon film solar cell on the bottom employs a transparent conductive film as an electrode, and a layer of silica gel with CNTs is provided on the counter-light side, which can protect the film cell and raise cell efficiency.
Description
Technical field
The utility model discloses a kind of amorphous silicon film solar battery of CNT silica gel encapsulation, belong to solar cell and new energy field.
Background technology
The energy crisis of the seventies in last century makes various countries pay attention to seeking the alternative energy more, and this lays a good foundation for the exploitation of thin-film solar cells.Exploitation mainly is the amorphous silicon membrane battery the earliest; But the amorphous silicon membrane battery conversion efficiency is low; One has only 5%-8%, and amorphous silicon hydride also has photic decline problem, but because its manufacturing process is simple, cost is low, do not need pyroprocess, the substrate choice is big, be suitable for characteristics such as large tracts of land production; In 80 middle and later periods in generation of last century, non-crystal silicon solar cell output share was once once reaching 20%.But because its puzzlement that added up by problems such as intrinsic and extrinsic decay are big, market scale is very little in addition, and development is restricted.The scientists exploitation conversion efficiency high compound film battery that begins one's study, one is more than 10%, even reaches 20%, but because of cost is high, part unit have problems such as pollution, makes to promote to be restricted.Polycrystalline silicon thin film solar cell efficient reaches more than 15%, but because complex process etc., area battery remains in problems.
Based on amorphous silicon and polycrystalline compounds semiconductor (comprising nano-titanium oxide dye well polysilicon membrane) though the market share of thin-film solar cells account for the less than 20% in whole photovoltaic market now; But along with the breakthrough of decay reduction, CIGS and the CdTe solar cell manufacturing technology of non-crystal silicon solar cell, thin-film solar cells more possesses competitiveness.
Focus around thin-film solar cells research is that exploitation is efficient, low-cost, long-life photovoltaic solar cell.They should have following characteristic: low-cost, efficient, long-life, material source are abundant, nontoxic, the relatively more good amorphous silicon thin-film solar cell of scientists.
At present; Ripe and thin-film solar cells that produced in enormous quantities is based on the thin-film solar cells of amorphous layer; Has following outstanding advantage: the photovoltaic good output under the high temperature; Than crystal silicon solar energy battery bigger actual power output, environmental friendliness, energy time of payment are still less arranged.
It is to be fit to do and build the photovoltaic electrification component (BIPV) that combines that thin-film solar cells also has a significant advantage: the Thinfilm solar cell assembly of double glazing encapsulation rigidity; Can be as required; Be made into different light transmittances; Can partly replace glass curtain wall, and the flexible thin-film solar cell of stainless steel and polymer substrate is applicable to that building roof etc. needs the part of moulding.It has beautiful outward appearance on the one hand, can generate electricity; On the other hand; The transparent conductive film (TCO) that is used for thin-film solar cells can stop the entering of outside infrared-ray and scattering and disappearing of internal heat energy again well; PVB or EVA in the middle of the double glazing can effectively cut off the conduction of energy, play the function of LOW-E glass.Because the scarcity of urban land; Occupy cultivated land on a large scale and build earthbound solar energy photo-voltaic power generation station possibility hardly, still, facade existing and leaved for development and roof area that the city is a large amount of; Be that the city utilizes the best platform of photovoltaic generation: they have avoided the light pollution problem of existing glass curtain wall; Can replace building materials again, generating simultaneously is energy-conservation again, will become the main direction that the future city utilizes photovoltaic generation.
The thin-film solar cells that accounts for lion's share at present is a non-crystal silicon solar cell, is generally pin structure battery, and Window layer is the P type amorphous silicon of boron-doping, then deposits the unadulterated i layer of one deck, deposits the N type amorphous silicon that one deck is mixed phosphorus again, and plated electrode.
Amorphous silicon battery one adopt PECVD (PlasmaEnhancedChemicalVaporDeposition---plasma enhanced chemical vapor deposition) method that decomposing gas deposition such as high purity silane is formed.This kind manufacture craft can be accomplished in a plurality of vacuum deposition chamber aborning continuously, to realize production in enormous quantities.Because the deposition decomposition temperature is low, can be on glass, corrosion resistant plate, ceramic wafer, flexible plastic sheet deposit film, be easy to large tracts of land production, cost is lower.The structure of the amorphous silicon based solar battery that on glass substrate, prepares is: Glass/TCO/p-a-SiC:H/i-a-Si:H/n-a-Si:H/Al, the structure of the amorphous silicon based solar battery for preparing at the bottom of the stainless steel lining is: SS/ZnO/n-a-Si:H/i-a-Si (Ge): H/p-na-Si:H/ITO/Al.
The utility model content
The purpose of the utility model is in order to overcome the shortcoming of present non-crystalline silicon thin-film solar cell, a kind of amorphous silicon film solar battery of CNT silica gel encapsulation to be provided.
The utility model adopts following technical scheme:
A kind of amorphous silicon film solar battery of CNT silica gel encapsulation includes pin type amorphous silicon film solar battery, it is characterized in that: on the sensitive surface of solar cell, seal up one deck silica gel, be distributed with CNT in the described silica gel layer.
The amorphous silicon film solar battery of described CNT silica gel encapsulation, the length that it is characterized in that described CNT is in 5 microns, and diameter is in 10 nanometers.
The amorphous silicon film solar battery of described CNT silica gel encapsulation, the weight ratio that it is characterized in that described silica gel and CNT is 4-8: 1.
The amorphous silicon film solar battery of described CNT silica gel encapsulation is characterized in that described silica gel layer adopts the macromolecule glue adhesion coating of the quick glue that comprises 502 series to substitute.
The beneficial effect of the utility model:
On solar cell, seal up the silica gel of one deck band CNT, both protected hull cell, because mixing of CNT influenced surface density of states and electriferous state, make open circuit voltage that bigger lifting arranged again, improved the power output and the efficient of battery; Adopt silica gel or other polymer colloids to encapsulate, can do the protection of anti-humidity and pollution battery.
Description of drawings
Fig. 1 is the utility model structural representation.
Fig. 2 is that test result relatively: solid line is to have the illumination I-V curve that amorphous silicon solar cell sample that the silica gel of CNT applies is tested out; The illumination I-V curve that dotted line is tested out for the amorphous silicon solar cell sample that does not have any silica gel coating.
Embodiment
Embodiment 1:
Of Fig. 1, do substrate 1 with silicon chip, prepare thin film solar cell above that; Its structure is as shown in Figure 1; Cell backside conductive layer 2 can be metal film layer, and like aluminium film or silver-colored film, battery is an amorphous silicon pin structure; Front metal electrode 3 adopts phosphide material to be welded on the positive transparent conductive film 6, and silica gel 4 is coated in the battery sensitive surface after mixing all with CNT 5.Front transparent conductive film 6 is usually with the zinc oxide department of mixing aluminium; It is the ZAO film; But be not limited to only adopt the ZAO film, front amorphous silicon membrane 7 is p type conduction, and 8 is the intrinsic amorphous silicon film; 9 is the n type amorphous silicon membrane at the back side, and the indium metal electrode 10 at the back side also is to adopt electric iron welding method diameter to be welded on the metallic film.
Embodiment 2:
[0023] test result that has encapsulation of CNT colloid and the battery sample that does not have the encapsulation of CNT colloid compares; As shown in Figure 2; The battery open circuit voltage that has the coating of CNT silica gel has surpassed the open circuit voltage 9% of the sample that does not have encapsulation; Fill factor, curve factor has improved 29%, and efficient has improved 36%.
Claims (3)
1. the amorphous silicon film solar battery of a CNT silica gel encapsulation includes pin type amorphous silicon film solar battery, it is characterized in that: on the sensitive surface of solar cell, seal up one deck silica gel, be distributed with CNT in the described silica gel layer.
2. the amorphous silicon film solar battery of CNT silica gel encapsulation according to claim 1, the length that it is characterized in that described CNT is in 5 microns, and diameter is in 10 nanometers.
3. the amorphous silicon film solar battery of CNT silica gel encapsulation according to claim 1, the weight ratio that it is characterized in that described silica gel and CNT is 4-8: 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200442634U CN202178283U (en) | 2011-02-22 | 2011-02-22 | Amorphous silicon film solar cell packed by CNT silica gel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200442634U CN202178283U (en) | 2011-02-22 | 2011-02-22 | Amorphous silicon film solar cell packed by CNT silica gel |
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| Publication Number | Publication Date |
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| CN202178283U true CN202178283U (en) | 2012-03-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011200442634U Expired - Fee Related CN202178283U (en) | 2011-02-22 | 2011-02-22 | Amorphous silicon film solar cell packed by CNT silica gel |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102709364A (en) * | 2012-06-11 | 2012-10-03 | 四川钟顺太阳能开发有限公司 | Solar battery assembly and encapsulation method thereof |
-
2011
- 2011-02-22 CN CN2011200442634U patent/CN202178283U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102709364A (en) * | 2012-06-11 | 2012-10-03 | 四川钟顺太阳能开发有限公司 | Solar battery assembly and encapsulation method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120328 Termination date: 20140222 |