CN202004034U - Solar cell with fluorescent powder - Google Patents
Solar cell with fluorescent powder Download PDFInfo
- Publication number
- CN202004034U CN202004034U CN201120069390XU CN201120069390U CN202004034U CN 202004034 U CN202004034 U CN 202004034U CN 201120069390X U CN201120069390X U CN 201120069390XU CN 201120069390 U CN201120069390 U CN 201120069390U CN 202004034 U CN202004034 U CN 202004034U
- Authority
- CN
- China
- Prior art keywords
- solar cell
- layer
- photoelectric conversion
- conversion
- fluorescent powder
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Classifications
-
- 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
- Y02E10/52—PV systems with concentrators
Landscapes
- Photovoltaic Devices (AREA)
Abstract
The utility model provides a solar cell with fluorescent powder. The solar cell comprises a photoelectric conversion layer and a fluorescent powder layer. The photoelectric conversion layer is used for converting luminous energy into electric energy. The fluorescent powder layer is arranged on at least one side of the photoelectric conversion layer, and is used for improving photoelectric conversion efficiency. The fluorescent powder may be up-conversion fluorescent powder or down-conversion fluorescent powder .The up-conversion fluorescent powder is X2Mo2O9:X, X2Mo2O9:X,X, X3Mo4O12:X or X3Mo4O12:X,X, and the down-conversion fluorescent powder is JQX(PO4)2:X<3+> or JQX(PO4)2:X<2+>,X<2+>, wherein X represents any rare earth metal, J represents lithium, sodium or potassium, and Q represents any alkaline earth metal.
Description
Technical field
The utility model is about a kind of solar cell, particularly relevant for a kind of solar cell with fluorescent material.
Background technology
Under the dual demand of energy crisis and environmental issue, the green energy resource that exploitation can be self-produced become human most important problem, and solar energy has generality, self-produced property and the feature of environmental protection simultaneously, is one of renewable energy resources of the best.Solar cell directly becomes electric energy with solar energy converting, it operates not toxigenicity material, greenhouse gas and noise, its operation is quite safe, also only need cheap maintenance cost, moreover solar energy is inexhaustible, the nexhaustible desirable renewable energy resources, the associated materials and the technology of development solar cell application are for solving the best approach and the strategy of the energy and environmental issue now.
The development of solar cell at present is divided into two big classes haply, and the first kind is to be basic material with silicon, and second class is with regard to the silica-based plinth material of right and wrong, and second class often is developed as at present: compound semiconductor (as CdTe), dye sensitization (DSSC) or machine battery etc. is arranged.The solar cell of present stage almost is main development with the first kind, because the energy conversion efficiency (conversionefficiency) that with silicon is the solar cell of basic material is higher, it can be divided into again: monocrystalline silicon, polysilicon, amorphous silicon, silicon thin film etc.Present solar cell market is based on the solar cell of monocrystalline and polysilicon, at present commercially available monocrystalline silicon conversion efficiency is about 20%, as for the conversion efficiency of polysilicon about 17%, all the conversion efficiency from dreamboat is very far away for these, because the desirable conversion efficiency in laboratory can reach 30～40% respectively, how this promotes conversion efficiency is exactly a very important developing goal.
Summary of the invention
Because the shortcoming of above-mentioned prior art, it does not reach perfection inventor's thoughts, then exhausting the concentrated research of its intelligence overcomes, be engaged in this industry accumulating experience for many years with it, and then develop a kind of solar cell with fluorescent material, in the hope of reaching the purpose of the photoelectric conversion efficiency that improves solar cell.
Main purpose of the present utility model is providing a kind of solar cell with fluorescent material, and it can effectively improve the photoelectric conversion efficiency of solar cell.
For reaching above-mentioned purpose, a kind of solar cell with fluorescent material of the present utility model comprises: a photoelectric conversion layer, and being used for transform light energy is electric energy; One phosphor powder layer is arranged at least one side of this photoelectric conversion layer, is used to increase photoelectric conversion efficiency; This fluorescent material is up-conversion phosphor or down-conversion fluorescent powder, and this up-conversion phosphor is selected from X
2Mo
2O
9: X, X
2Mo
2O
9: X, X, X
3Mo
4O
12: X or X
3Mo
4O
12: X, X, this down-conversion fluorescent powder is selected from JQX (PO
4)
2: X
3+Or JQX (PO
4)
2: X
2+, X
2+, wherein X represents any rare earth metal, and J represents lithium, sodium or potassium, and Q represents any alkaline-earth metal.
Above-mentioned solar cell, wherein this up-conversion phosphor is La
2Mo
2O
9: Yb, Er or La
2Mo
2O
9: Yb, Ho.
Above-mentioned solar cell, wherein this down-conversion fluorescent powder is KCaGd (PO
4)
2: Eu
3+Or KSrGd (PO
4)
2: Eu
3+
Above-mentioned solar cell, wherein this phosphor powder layer further comprises BaMgAl
10O
17: Eu
2+, Mn
2+Or (Ba, Sr, Mg)
2SiO
4: Eu
2+
Above-mentioned solar cell, wherein this phosphor powder layer further comprises a high-molecular coating, and it is selected from one or its combination in PMMA (polymethyl methacrylate), polyamide and the silicon compound.
Above-mentioned solar cell, wherein this photoelectric conversion layer is selected from one in P type semiconductor and the N type semiconductor or its combination.
Above-mentioned solar cell, wherein this photoelectric conversion layer is selected from one among polysilicon, monocrystalline silicon, amorphous silicon and the CdTe or its combination.
Above-mentioned solar cell further comprises an anti-reflecting layer, and it is arranged between at least one side, this photoelectric conversion layer and this phosphor powder layer of this photoelectric conversion layer or at least one side of this phosphor powder layer.
Above-mentioned solar cell, wherein this anti-reflecting layer is selected from one in silicon nitride, silica and the silicon oxynitride or its combination.
Above-mentioned solar cell, wherein this phosphor powder layer forms by screen painting, evaporation, sputter, coating or laminating type.
Above-mentioned solar cell, wherein the thickness of this phosphor powder layer is 1 to 100 micron.
Thus, a kind of solar cell with fluorescent material of the present utility model can effectively improve the photoelectric conversion efficiency of solar cell.
Description of drawings
Fig. 1 (a) and Fig. 1 (b) are schematic diagram, show the solar battery structure with the conversion of going up or down-conversion fluorescent material respectively.
[primary clustering symbol description]
1 silicon solar plate
2 upconverting fluorescent materials
3 back reflector
4 down-conversion fluorescent materials
Embodiment
For fully understanding the purpose of this utility model, feature and effect, now by following specific embodiment, and cooperate appended graphicly, the utility model is described in detail, illustrate as afterwards:
The utility model mainly utilizes upper and lower conversion phosphor to promote conversion efficiency, shown in Fig. 1 (a) and Fig. 1 (b).Because with silicon is the solar cell of basic material, what be subject to element silicon itself can rank due to the size, carry out opto-electronic conversion so can only absorb in the sunlight 400 to 1000nm light, but frequency spectrum with general sunlight, the scope that sunlight is contained from ultraviolet light (UV) to infrared light (IR), so the absorbing light scope of silicon materials is obviously narrower and small.Therefore, if can increase the utilization of ultraviolet light and these two big blocks of infrared light, should promote very considerable conversion efficiency.
In the utility model, frequency spectrum or the spectrum conversion suitable fluorescent material of can arranging in pairs or groups, and carry out in the following manner:
Last conversion (up conversion, structure is shown in Fig. 1 (a)), it comprises silicon solar plate 1, upconverting fluorescent material 2, back reflector 3 in regular turn.
Following conversion (down conversion, structure is shown in Fig. 1 (b)), it wraps down-conversion fluorescent material 4 and silicon solar plate 1 in regular turn.
The principle of changing on the solar spectrum, mainly be with the incident photon of energy less than the solar cell material energy gap, change the photon of energy into greater than energy gap, then via high-energy photon that mirror reflects produced, the confession solar cell absorbs once more and produces electronics/electric hole to (electron-hole pair), and its highest theoretical efficiency is 47.6%.And the principle that solar spectrum is changed down is made in down-conversion fluorescent material (down converter) on the solar cell surface, utilize energy greater than the incident photon of solar cell material energy gap more than two times, change two photons of energy into greater than energy gap, absorb once more for solar cell afterwards and to produce two groups of electronics/electric hole right, its highest theoretical efficiency is 30.9%.
The present known up-conversion phosphor that can be used on solar cell, common have a NaYF
4: Er (visible A.Shalav et al. (2005), Appl.Phys.Lett.86,013505) and NaYF
4: Yb, and Er (visible A.Shalav et al. (2007), Sol.Energ.Mat.Sol.Cells, 91,829-842), it can promote the quantum efficiency (quantum efficiency) of solar cell.The present known down-conversion fluorescent powder that can be used on solar cell is as Y
2O
3: Eu
3+Or Y
2O
2S:Eu
3+(visible P.Chung et al. (2007), J.Vac.Sci.Technol.A, 25,1,61-66), its utilization combines with macromolecule (PE and TPP), is coated on the undersized solar cell of Laboratary type.
United States Patent (USP) 2007/0295383 A1, open with a series of can absorb 280 to 460nm wavelength (Sr, Ba, Eu)
2SiO
4F
xNanometer and micrometer fluorescent powder, be integrated in silicon solar cell with its conversion efficiency of effective lifting.But this patent does not obviously provide the data that can effectively promote conversion efficiency, and all a limit is applied on the undersized solar cell of Laboratary type, lacks the possibility of using in commercial volume production.
Theory has confirmed to utilize light-converting material (all types of fluorescent material), be one of feasible method of the conversion efficiency that promotes solar cell, its major advantage is: method is simple, with low cost, more do not influence the making of solar cell originally, in theory also applicable to various dissimilar solar cells.Hereat, can be applicable to the seeking and practicability of light-converting material of solar cell, believe popularization and future development, will have far-reaching influence for solar cell.Therefore, the research unit that the whole world is main all is devoted to develop alternative material and The Research of Relevant Technology thereof, to reduce cost of manufacture and to promote conversion efficiency.
In general, main purpose of the present utility model is to provide a kind of solar cell with photoelectric conversion layer and phosphor powder layer, wherein contains up-conversion phosphor or down-conversion fluorescent powder in this phosphor powder layer.
Generally speaking, the general formula of up-conversion phosphor is X
2Mo
2O
9: X, X
2Mo
2O
9: X, X, X
3Mo
4O
12: X or X
3Mo
4O
12: X, X, wherein X represents any rare earth metal, for example La, Gd or the like, and the rare earth metal with one or both mixes in the up-conversion phosphor.
The general formula of down-conversion fluorescent powder is JQX (PO
4)
2: X
3+Or JQX (PO
4)
2: X
2+, X
2+, wherein J represents lithium, sodium or potassium, and Q represents any alkaline-earth metal, for example Mg, Ca, Sr, Ba, and the definition of X is the same; In addition, the rare earth ion with one or both mixes in the down-conversion fluorescent powder.
Synthetic up-conversion phosphor La
2Mo
2O
9: Yb, Er and La
2Mo
2O
9: Yb, Ho
Mix La
2O
3, MoO
3, Yb
2O
3And R
2O
3(R=Er Ho), is (1-x-y) with stoichiometric composition: 2: x: the ratio of y, and x=0.09 and y=0.01 are dissolved in 5%HCl with mixture, obtain a yellowish powder precursors after drying.Again with behind the abundant mixed grinding of precursors, in 900 ℃ of heating slowly cooling after 8 hours, to obtain white highly purified La
2Mo
2O
9: Yb, Er and La
2Mo
2O
9: Yb, Ho.
Synthetic down-conversion fluorescent powder KCaGd (PO
4)
2: Eu
3+And KSrGd (PO
4)
2: Eu
3+
With the ratio of stoichiometric composition, mix (NH
4)
2HPO
4, K
2CO
3, Eu
2O
3, Gd
2O
3And RCO
3(R=Ca Sr), and mixes NH
4Cl is as flux, afterwards in 800 ℃ of heating 6 hours and in 1200 ℃ of heating cooling after 6 hours, to obtain highly purified KCaGd (PO
4)
2: Eu
3+And KSrGd (PO
4)
2: Eu
3+
Manufacturing has the solar cell of up-conversion phosphor
Weight % mixing up-conversion phosphor and PMMA with 1: 10 coat 1 with screen painting afterwards " * 6 " the polycrystalline silicon solar plate, at last in 130 ℃ of curing 3 hours, to finish solar cell with up-conversion phosphor.Wherein embodiment 1 is with La
2Mo
2O
9: Yb, Ho coat the incidence surface of solar panels, and embodiment 2 to 3 is with La
2Mo
2O
9: Yb, Er coat the incidence surface of solar panels, and embodiment 4 is with La
2Mo
2O
9: Yb, Er coat the shady face of solar panels.Measure before the coating respectively and the short circuit current (Isc) after the coating, open voltage (Voc) and photoelectric conversion efficiency (η %), wherein photoelectric conversion efficiency can be calculated and be got by following formula:
η=FF.Isc.Voc/Pin, wherein Pin is the exposure light energy that enters solar cell, FF is a fill factor, curve factor.Its experimental result is as shown in table 1.
Table 1:
Can find by table 1, solar cell with up-conversion phosphor, can obviously increase photoelectric conversion efficiency is 1.50% to 2.71%, and coat the shady face of solar panels when up-conversion phosphor, can obtain best photoelectric conversion efficiency, and work as the incidence surface that up-conversion phosphor is coated solar panels, photoelectric conversion efficiency there is no too big change, meets the theory that prior art discloses.
Manufacturing has the solar cell of down-conversion fluorescent powder
With 1: 10 weight % mixing down-conversion fluorescent powder and PMMA, coat commercially available 36 6 with screen painting afterwards " * 6 " incidence surface of polycrystalline silicon solar plate, solidified 3 hours in 130 ℃ at last, to finish solar cell with up-conversion phosphor.Measure before the coating respectively and the short circuit current (Isc) after the coating, open voltage (Voc) and photoelectric conversion efficiency (η %), and get its mean value.Its experimental result is as shown in table 2.
Table 2:
Can find to have the solar cell of down-conversion fluorescent powder by table 2, can obviously increase photoelectric conversion efficiency to 2.90%, and can use in commercial volume production.
By above-mentioned experimental result as can be known, upper and lower conversion phosphor of the present utility model, can coat on the anti-reflecting layer of commercially available solar panels with anti-reflecting layer, also can coat the solar panels of no anti-reflecting layer and have the effect of anti-reflecting layer, all can effectively increase the photoelectric conversion efficiency of solar cell.
As mentioned above, the utility model meets patent three important documents fully: novelty, creativeness and practicality.With novelty and creative, the utility model can effectively reach the short circuit current of increase solar cell and the effect of photoelectric conversion efficiency by synthetic voluntarily upper and lower conversion phosphor; With regard to experimental, the product that utilizes the utility model to derive is when the demand that can fully satisfy existing market.
The utility model is described with preferred embodiment hereinbefore, it will be understood by those skilled in the art that so this embodiment only is used to describe the utility model, and should not be read as restriction scope of the present utility model.It should be noted,, all should be made as and be covered by in the category of the present utility model such as with the variation and the displacement of this embodiment equivalence.Therefore, protection range of the present utility model when with hereinafter claim the person of being defined be as the criterion.
Claims (7)
1. the solar cell with fluorescent material is characterized in that, comprises:
One to be used for transform light energy be the photoelectric conversion layer of electric energy;
One is arranged at least one side of this photoelectric conversion layer, is used to increase the phosphor powder layer of photoelectric conversion efficiency; This phosphor powder layer is up-conversion fluorescence bisque or down-conversion fluorescent bisque.
2. solar cell as claimed in claim 1 is characterized in that, this photoelectric conversion layer is the layer that is selected from one or its combination in P type semiconductor and the N type semiconductor.
3. solar cell as claimed in claim 1 is characterized in that, this photoelectric conversion layer is the layer that is selected from one or its combination among polysilicon, monocrystalline silicon, amorphous silicon and the CdTe.
4. solar cell as claimed in claim 1 is characterized in that, further comprises one and is arranged between at least one side, this photoelectric conversion layer and this phosphor powder layer of this photoelectric conversion layer or the anti-reflecting layer of at least one side of this phosphor powder layer.
5. solar cell as claimed in claim 4 is characterized in that, this anti-reflecting layer is selected from one in silicon nitride, silica and the silicon oxynitride or its combination.
6. solar cell as claimed in claim 1 is characterized in that this phosphor powder layer forms by screen painting, evaporation, sputter, coating or laminating type.
7. solar cell as claimed in claim 1 is characterized in that, 1 to 100 micron of the thickness of this phosphor powder layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120069390XU CN202004034U (en) | 2011-03-16 | 2011-03-16 | Solar cell with fluorescent powder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120069390XU CN202004034U (en) | 2011-03-16 | 2011-03-16 | Solar cell with fluorescent powder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202004034U true CN202004034U (en) | 2011-10-05 |
Family
ID=44706761
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120069390XU Expired - Fee Related CN202004034U (en) | 2011-03-16 | 2011-03-16 | Solar cell with fluorescent powder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202004034U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103094394A (en) * | 2013-01-18 | 2013-05-08 | 厦门大学 | Down-conversion crystalline silicon solar cell and preparation method thereof |
| CN104893717A (en) * | 2015-06-09 | 2015-09-09 | 天津包钢稀土研究院有限责任公司 | Spectrum conversion material, light conversion layer material, composite film and solar cell |
-
2011
- 2011-03-16 CN CN201120069390XU patent/CN202004034U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103094394A (en) * | 2013-01-18 | 2013-05-08 | 厦门大学 | Down-conversion crystalline silicon solar cell and preparation method thereof |
| CN103094394B (en) * | 2013-01-18 | 2015-10-07 | 厦门大学 | A kind of lower conversion crystal silicon solar cell and preparation method thereof |
| CN104893717A (en) * | 2015-06-09 | 2015-09-09 | 天津包钢稀土研究院有限责任公司 | Spectrum conversion material, light conversion layer material, composite film and solar cell |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Zheng et al. | Large-area 23%-efficient monolithic perovskite/homojunction-silicon tandem solar cell with enhanced UV stability using down-shifting material | |
| McKenna et al. | Towards efficient spectral converters through materials design for luminescent solar devices | |
| Klampaftis et al. | Enhancing the performance of solar cells via luminescent down-shifting of the incident spectrum: A review | |
| Liu et al. | Improving spectral response of monocrystalline silicon photovoltaic modules using high efficient luminescent down‐shifting Eu3+ complexes | |
| US20070295383A1 (en) | Wavelength-converting phosphors for enhancing the efficiency of a photovoltaic device | |
| CN102456762B (en) | Crystalline silicon solar battery and amorphous silicon solar battery | |
| Yen-Chi et al. | Enhancing the performance of photovoltaic cells by using down-converting KCaGd (PO4) 2: Eu3+ phosphors | |
| TWI452118B (en) | A solar cell with a fluorescent powder and a method for making the same | |
| Chen et al. | Improvement of conversion efficiency of silicon solar cells using up-conversion molybdate La2Mo2O9: Yb, R (R= Er, Ho) phosphors | |
| CN201773856U (en) | Down-conversion luminous structure of solar cell | |
| Li et al. | Luminescent solar concentrators performing under different light conditions | |
| KR20090069894A (en) | Solar cell containing phosphor and method for manufacturing the same | |
| CN102683466A (en) | Solar battery with fluorescent powder and manufacturing method thereof | |
| Satpute et al. | Synthesis and luminescence characterization of downconversion and downshifting phosphor for efficiency enhancement of solar cells: Perspectives and challenges | |
| CN102891203A (en) | Fluorescence conversion white packaging material and solar cell adopting same | |
| CN102683467A (en) | Solar battery module | |
| CN202004034U (en) | Solar cell with fluorescent powder | |
| CN102386271A (en) | Method of applying up-conversion materials to crystalline silicon cell | |
| CN114242821A (en) | Front plate glass of photovoltaic module and preparation method and application thereof | |
| Park et al. | Enhanced efficiency of organic photovoltaic cells with Sr2SiO4: Eu2+ and SrGa2S4: Eu2+ phosphors | |
| CN107312539B (en) | Yb (Yb)3+Ion-activated near-infrared luminescent vanadium silicate material and preparation method and application thereof | |
| Tonezzer et al. | Luminescent solar concentrators–state of the art and future perspectives | |
| Richards et al. | Ray-tracing simulations of luminescent solar concentrators containing multiple luminescent species | |
| CN103094394B (en) | A kind of lower conversion crystal silicon solar cell and preparation method thereof | |
| CN110491963A (en) | A kind of two-sided photovoltaic module and photovoltaic generating system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111005 Termination date: 20150316 |
|
| EXPY | Termination of patent right or utility model |