CN102231333B - Vacuum automatic packaging method used for dye sensitization solar energy cell - Google Patents
Vacuum automatic packaging method used for dye sensitization solar energy cell Download PDFInfo
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- CN102231333B CN102231333B CN 201110084525 CN201110084525A CN102231333B CN 102231333 B CN102231333 B CN 102231333B CN 201110084525 CN201110084525 CN 201110084525 CN 201110084525 A CN201110084525 A CN 201110084525A CN 102231333 B CN102231333 B CN 102231333B
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- encapsulating material
- work electrode
- tio
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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
- Y02E10/542—Dye sensitized solar cells
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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
- Y02E10/549—Organic PV cells
Abstract
The invention is directed to the field of dye sensitization solar energy cell production technology and particularly relates to a vacuum automatic packaging method used for a dye sensitization solar energy cell. According to the method, a screen printing method is adopted to prepare a TiO2 film, automatic gluing equipment is employed to form a required figure and a procuring is carried out, electrolyte is dripped into the figure formed by the packaging glue with an automatic dripping apparatus, leveling and stitching are carried out in a vacuum atmosphere and finally the packaging process of the cell is completed. The invention is characterized by simple technology, high controllability on technological parameter, short packaging time, good packaging reliability and high yield. The thickness of the cell and the amount of electrolyte are controlled through doping a cushion in the liquid state glue and the working electrode and the counter electrode are separated. The invention can be used for the packaging of a high efficiency large acreage dye sensitization solar energy cell.
Description
Technical field
The invention belongs to the DSSC technical field of producing, relate in particular to a kind of vacuum automatic package method for DSSC.
Background technology
Along with population in the world increase in recent years, energy depletion and global pollution have become very important problem.And solar energy is sought in the course of novel energy the mankind as a kind of inexhaustible reproducible energy, and its irreplaceable important function is arranged.Solar cell is a kind of device that directly transform light energy is become electric energy by photoelectric effect or Photochemical effects.Because solar cell just consumes sunlight, do not need moving component, move very reliably, and on not impact of environment, naturally become the human optimal energy.
The photoelectric conversion phenomenon by French scientist Henri Becq μ erel in first observed in 1839 to, until the scientist in Bell laboratory in 1954 has successfully prepared the solar cell with p-n junction, its electricity conversion reaches 6%, but this is the solar cell of the first practicality.
At present, crystal silicon solar energy battery is widely used, and occupies the staple market of solar cell.But crystal silicon solar energy battery has certain limitation, and for example relative cost is high, and solar photovoltaic conversion efficient is relatively low, and silicon wafer thickness is thicker etc.Meanwhile, thin-film solar cells has caused people's interest, and has had industry to a certain degree to use.Compare with crystalline silicon, the cost of thin-film solar cells descends larger, and conversion efficiency further promotes and have the large tracts of land productive potentialities, so occupation rate of market has the space of further lifting, but because its complex process and cost are still higher, limited its development.And as the DSSC that grows up the nineties, be a kind of novel solar cell.1991, the Switzerland scientist
Utilize first nanometer technology that the transformation efficiency of DSSC is brought up to 7% Deng the people.DSSC is by means of the nanometer technology of at present fast development, and characteristics such as low-cost and environmental friendliness with it by people's broad research, and are able to fast development as the third generation solar cell technology.
DSSC mainly comprises work electrode, electrolyte and to electrode.Wherein, can pass through behind conductive substrate preparation semiconductor porous film, dye molecule is adsorbed on form work electrode on the perforated membrane; Generally be the electro-conductive glass that is coated with the platinum layer to electrode; Containing redox couple in the electrolyte, can be liquid, accurate solid-state or solid-state, and electrolyte commonly used is to contain I
3/ I
4The liquid state of ion.
DSSC adopts above-mentioned " sandwich " structure, in the time of on being applied to the area battery product, for guaranteeing the stable of battery performance, usually needs the good sealing of battery and electrolyte thickness to keep evenly.Meanwhile, because electrolyte generally has stronger oxidizability and higher volatility, use the long life-span that needs in order to guarantee DSSC, encapsulation technology is also had higher requirement.
In the prior art, DSSC is holed as hand-hole at an electro-conductive glass first usually, utilize encapsulant to form seal chamber around electro-conductive glass, the hand-hole by electro-conductive glass injects electrolyte again, finishes at last the sealing of hand-hole.The encapsulating method of prior art is the packaging technology of complexity, and encapsulation automation and repeatable relatively poor, causes encapsulation difficulty increase, rate of finished products reduction.
Summary of the invention
The technical problem that (one) will solve
The technical problem to be solved in the present invention is: the repeatability and the automaticity that how to improve the DSSC encapsulation.
(2) technical scheme
For solving the problems of the technologies described above, the invention provides a kind of vacuum automatic package method for DSSC, may further comprise the steps:
S1, the method that adopts silk screen printing are printed on slurry on the conductive substrate for the preparation of work electrode, so that described slurry is printed to the sheet film of some mutual isolation, reserve one section space between the sheet film on every conductive substrate so that encapsulation;
S2, the conductive substrate that will utilize step S1 to obtain carry out sintering, then soak, and obtain work electrode;
S3, bed course is mixed in the liquid packaging plastic;
S4, the liquid packaging plastic that will mix bed course are inserted in the automatic glue painting device and are stirred, and bed course is evenly distributed in liquid packaging plastic, form encapsulating material; And will evenly apply in the space of described encapsulating material between the sheet film of work electrode, obtain being coated the work electrode of encapsulating material; Then described encapsulating material is carried out precuring, obtain being coated with the work electrode of semi-solid preparation encapsulating material;
S5, utilize the electrolyte that instils in the encapsulating material of automatic drip dispensing device after precuring;
S6, under vacuum condition, will be covered on the work electrode that is coated with the semi-solid preparation encapsulating material electrode, and the work electrode that is coated with electrode will be applied uniform pressure, make it smooth and remove to introduce wherein air;
S7, the encapsulating material in the work electrode is cured again, obtains dye-sensitized cell.
Wherein, described conductive substrate is the fin oxide condutire glass of mixing F.
Wherein, described slurry is TiO
2The nano particle slurry, correspondingly, formed sheet film is TiO
2The rectangle sheet film.
Wherein, described bed course is comprised of the insulated particle of same size.
Wherein, described bed course is comprised of the spherical insulated particle of same diameter.
Wherein, described liquid packaging plastic is ultraviolet curing glue.
Wherein, described TiO
2The nano particle slurry is the slurry that utilizes sol-gel process to be prepared from.
Wherein, step S2 is specially, and will be printed with TiO
2The conductive substrate of rectangle sheet film places annealing furnace, and sintering is 30～60 minutes under the temperature between 450 ℃～550 ℃, and taking-up substrate after sintering is finished places dyestuff to soak 24～48 hours, obtains work electrode.
(3) beneficial effect
With respect to the packaging technology of traditional DSSC, the present invention adopts automatically dropping glue, automatic the instil packaged type of electrolyte, has obtained efficient large-area dye-sensitized solar battery, specifically,
1) figure that utilizes automatic glue painting device control to encapsulate, utilize the diameter control work electrode of bed course and to the distance between the electrode and electrolytical thickness, improve the repeatability of area battery encapsulation, aligning between the realization battery two-plate and the isolation between the junior unit battery are conducive to production and the application of efficient area battery;
2) leveling pressing work electrode and during to electrode in vacuum atmosphere has effectively been removed the air that may introduce in the instillation electrolyte process, prevents reducing of effective area that the introducing of solar cell Air causes.
3) bed course that forms by the spheric granules of selecting by same diameter can be controlled the use of liquid electrolyte, effectively adjusts the impedance of electrolyte part, improves the performance of battery;
4) can use the liquid packaging plastic of strong corrosion resistance, utilize its strong adhesive performance and good sealing, shorten the encapsulation time, improve the life-span of encapsulation rate of finished products and product.
Description of drawings
Fig. 1 is method flow diagram of the present invention;
Fig. 2 is the silk-screen TiO on the FTO electro-conductive glass according to the embodiment of the invention
2Film;
Fig. 3 is the work electrode of making according to the embodiment of the invention;
Fig. 4 is the integration applanation process of battery in vacuum atmosphere according to the embodiment of the invention;
Fig. 5 is the complete dye-sensitized cell according to the embodiment of the invention.
Among the figure: the 1FTO electro-conductive glass; TiO before 2 annealing
2Film; TiO after 3 annealing
2Film; 4 pairs of electrodes; 5 mix the curing glue of bed course; 6 electrolyte.
Embodiment
Below in conjunction with drawings and Examples, the specific embodiment of the present invention is described in further detail.Following examples are used for explanation the present invention, but are not used for limiting the scope of the invention.
As shown in Figure 1, and with reference to figure 2～5, the method for the embodiment of the invention may further comprise the steps:
S1, employing screen printing technique are TiO
2The nano particle slurry is printed on the conductive substrate (being preferably the fin oxide condutire glass (FTO electro-conductive glass 1) of mixing F) for the preparation of work electrode, so that described TiO
2The nano particle slurry is printed to the TiO of some mutual isolation
2The rectangle sheet film (can be referred to as TiO
2Film).TiO on every conductive substrate
2Reserve one section space (be the interval between four films among Fig. 2) between the film so that encapsulate.
Wherein, before the use, FTO electro-conductive glass 1 will clean post-drying through ultrasonic water bath, and effect is the cleaning electro-conductive glass, the TiO after guaranteeing to anneal
2With the FTO electro-conductive glass good contact effect.
Wherein, preparation TiO
2The process of nano particle slurry is: utilize sol-gel process to prepare nano-TiO
2Nano particle slurry: the triethylamine solution 50mL, the 0.1mol/L acetic acid titanium solution 250mL that prepare a certain amount of concentration; Under strong agitation, triethylamine solution is joined in the acetic acid titanium solution; In order to make TiO
2Uniform particles prevents that particle from reuniting fast, uses dropping funel that triethylamine solution is joined in the acetic acid titanium solution lentamente; Along with the adding of triethylamine solution, the adularescent floccule generates; Constantly stir, through about 15h, become stable colloidal sol; Then filter, remove oarse-grained TiO
2After obtain required TiO
2The nano particle slurry.
Wherein, use silk screen printing machine silk-screen TiO
2Nano particle slurry, the silk screen of used screen process press are 300 orders, TiO
2Preset space between the film is 3mm.
Wherein, the printing process is specially: FTO electro-conductive glass 1 is positioned on the microscope carrier of silk screen printing machine, covers silk screen, can by the figure of slurry, be stained with TiO with scraper with what make in advance on the FTO electro-conductive glass 1 aligning silk screen when covering silk screen
2The nano particle slurry is even blade coating TiO on the figure of silk screen firmly
2The nano particle slurry, its thickness is about 7um-10um.As shown in Figure 2, for being printed with the front TiO of annealing on the FTO electro-conductive glass 1
2The schematic diagram of film 2.
S2, the conductive substrate that silk-screen is finished carry out sintering, then soak, and obtain work electrode.Be specially: will be printed with TiO
2The conductive substrate of film places annealing furnace (for example Muffle furnace), sintering 30～60 minutes (being preferably 60 minutes) under the temperature that (is preferably 500 ℃) between 450 ℃～550 ℃, take out substrate after sintering is finished, place the N719 dyestuff to soak 24～48 hours (being preferably 36 hours).Work electrode after dyestuff soaks as shown in Figure 4.On-chip TiO
2Particle mean radius in the film is about 40nm, and thickness is 7.0 μ m.
Next work electrode is used for the assembling of battery.
S3, be that the bed course (spacer) of 20 μ m mixes in the 5g ultraviolet curing glue with the 0.1g diameter, obtain mixture, namely mix the curing glue 5 of bed course.
S4, mixture is inserted in the automatic glue painting device, with mechanical agitation bed course is evenly distributed in ultraviolet curing glue, form encapsulating material, in the process that forms encapsulating material, utilize the figure of described automatic glue painting device control encapsulating material.Using with the supporting diameter of automatic glue painting device is the needle head that is coated with of 100 μ m, with the encapsulating material that the mixes TiO at work electrode
2Evenly apply in the space between the film.The encapsulating material that coating is good places in the ultraviolet curing machine, uses 365nm, intensity to be 100mw/cm
2UV-irradiation 10 seconds, finish the precuring of encapsulating material, form the encapsulating material of semi-cured state, thereby obtain being coated with the work electrode of precuring encapsulating material.Described precuring is the process with the encapsulating material semi-solid preparation, makes encapsulating material that certain viscosity be arranged, and is unlikely to again to solidify fully.Described automatic glue painting device is existing equipment, gets final product so long as can finish the equipment of automatic glue application.For example, can be by computer control, the equipment of the track glue coated of setting according to the user.
S5, utilize manually or instillation electrolyte 6 in the encapsulating material of automatic drip dispensing device after precuring.Described automatic drip dispensing device is existing equipment, gets final product so long as can finish the equipment of automatic instillation.For example, can be by computer control, according to user's needs, with certain flow the electrolyte of specified quantitative is instilled into equipment in the encapsulating material.
S6, with mechanical pump required vacuum cavity is taken out vacuum atmosphere for 200-20000pa (being preferably 5000pa), to be covered on the work electrode that has applied encapsulating material electrode 4 (back electrode of battery) under this vacuum condition, and apply uniform pressure with automatic pressing device, make its smooth and removal introducing air, thereby improve the rate of finished products of cell package.
S7, this automatic pressing device is put in the ultraviolet curing machine, uses peak value to be 365nm, intensity is 100mw/cm
2UV-irradiation 20s, encapsulating material is cured again, to obtain complete dye-sensitized cell, as shown in Figure 5.
As can be seen from the above embodiments, technique of the present invention is simple, the technological parameter controllability is high, the encapsulation time is short, the reliability and the rate of finished products that encapsulate under this technological parameter condition are high, and adopt method control cell thickness and the electrolyte consumption in liquid glue, mix bed course, isolation work electrode and to electrode.The present invention can be used for the encapsulation of efficient large-area dye-sensitized solar battery.
The above only is preferred implementation of the present invention; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the technology of the present invention principle; can also make some improvement and modification, these improve and modification also should be considered as protection scope of the present invention.
Claims (6)
1. a vacuum automatic package method that is used for DSSC is characterized in that, may further comprise the steps:
S1, the method that adopts silk screen printing are printed on slurry on the conductive substrate for the preparation of work electrode, so that described slurry is printed to some sheet films, the certain distance in described some sheet films space is arranged on the described conductive substrate;
S2, the conductive substrate that will utilize step S1 to obtain carry out sintering, then soak, and obtain work electrode;
S3, bed course is mixed in the liquid packaging plastic;
S4, the liquid packaging plastic that will mix bed course are inserted in the automatic glue painting device and are stirred, and bed course is evenly distributed in liquid packaging plastic, form encapsulating material; And will evenly apply in the interval of described encapsulating material between the sheet film of work electrode, obtain being coated the work electrode of encapsulating material; Then described encapsulating material is carried out precuring, obtain being coated with the work electrode of semi-solid preparation encapsulating material;
S5, utilize the electrolyte that instils in the encapsulating material of automatic drip dispensing device after precuring;
S6, under vacuum condition, will be covered on the work electrode that is coated with the semi-solid preparation encapsulating material electrode, and the work electrode that is coated with electrode will be applied uniform pressure, make it smooth and remove to introduce wherein air;
S7, the encapsulating material in the work electrode is cured again, obtains dye-sensitized cell;
Described bed course is comprised of the spherical insulated particle of same diameter.
2. the method for claim 1 is characterized in that, described conductive substrate is the fin oxide condutire glass of mixing F.
3. method as claimed in claim 2 is characterized in that, described slurry is TiO
2The nano particle slurry, correspondingly, formed sheet film is TiO
2The rectangle sheet film.
4. method as claimed in claim 3 is characterized in that, described liquid packaging plastic is ultraviolet curing glue.
5. method as claimed in claim 3 is characterized in that, described TiO
2The nano particle slurry is the slurry that utilizes sol-gel process to be prepared from.
6. such as each described method in the claim 3,4,5, it is characterized in that, step S2 is specially, and will be printed with TiO
2The conductive substrate of rectangle sheet film places annealing furnace, and sintering is 30～60 minutes under the temperature between 450 ℃～550 ℃, and taking-up substrate after sintering is finished places dyestuff to soak 24～48 hours, obtains work electrode.
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| CN 201110084525 CN102231333B (en) | 2011-04-06 | 2011-04-06 | Vacuum automatic packaging method used for dye sensitization solar energy cell |
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| CN 201110084525 CN102231333B (en) | 2011-04-06 | 2011-04-06 | Vacuum automatic packaging method used for dye sensitization solar energy cell |
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| CN102231333B true CN102231333B (en) | 2013-01-23 |
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| CN102610399B (en) * | 2012-03-09 | 2014-08-27 | 上海北京大学微电子研究院 | Sensitized solar cell package system and method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101515509A (en) * | 2009-03-25 | 2009-08-26 | 彩虹集团公司 | Packaging method for dye-sensitized solar battery assembly |
| CN101582335A (en) * | 2009-05-27 | 2009-11-18 | 彩虹集团公司 | Method for packaging dye-sensitized solar battery |
| CN101777436A (en) * | 2010-01-20 | 2010-07-14 | 北京大学 | Method for packaging dye-sensitized solar cell |
| CN101916668A (en) * | 2010-08-09 | 2010-12-15 | 上海联孚新能源科技有限公司 | Dye-sensitized solar battery with sealing structure and preparation method thereof |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101515509A (en) * | 2009-03-25 | 2009-08-26 | 彩虹集团公司 | Packaging method for dye-sensitized solar battery assembly |
| CN101582335A (en) * | 2009-05-27 | 2009-11-18 | 彩虹集团公司 | Method for packaging dye-sensitized solar battery |
| CN101777436A (en) * | 2010-01-20 | 2010-07-14 | 北京大学 | Method for packaging dye-sensitized solar cell |
| CN101916668A (en) * | 2010-08-09 | 2010-12-15 | 上海联孚新能源科技有限公司 | Dye-sensitized solar battery with sealing structure and preparation method thereof |
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