CN202796967U - Laminated antireflection film for single crystalline silicon-like solar cell - Google Patents
Laminated antireflection film for single crystalline silicon-like solar cell Download PDFInfo
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- CN202796967U CN202796967U CN 201220345993 CN201220345993U CN202796967U CN 202796967 U CN202796967 U CN 202796967U CN 201220345993 CN201220345993 CN 201220345993 CN 201220345993 U CN201220345993 U CN 201220345993U CN 202796967 U CN202796967 U CN 202796967U
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- solar cell
- antireflection film
- single crystalline
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Abstract
Provided is a laminated antireflection film for a single crystalline silicon-like solar cell. The front surface of a single crystalline silicon-like piece (3) of a solar cell is provided with a ZnO hollow sphere film (2) and a silicon nitride film (1) in sequence from inside to outside. The thickness of the ZnO film (2) is 15-20nm and the thickness of the silicon nitride film (1) is 30-40nm. According to the laminated antireflection film, the refractive index of the adopted ZnO hollow sphere film is 2.03 and the refractive index of the silicon nitride film is 1.4-1.7. Compared with a single layer film, the laminated film has better optic matching characteristics, has excellent antireflection effects on 550nm light of main spectral response of silicon, and also has good reflection and absorption effects on light with a wavelength in a range of 300-1200nm, so that the conversion efficiency of the single crystalline silicon-like solar cell is improved.
Description
Technical field
The utility model relates to a kind of antireflective coating structure of solar cell, especially laminated antireflection film structure, specifically a kind monocrystaline silicon solar cell laminated antireflection film.
Background technology
Solar cell is the device that solar energy luminous energy is converted to electric energy, and the conversion efficiency of solar battery sheet is commonly defined as the ratio of power output with the sunlight gross power that incides the cell piece surface of cell piece.It is that reflection and refraction can occur that solar irradiation is mapped to the cell piece surface, is the conversion efficiency of raising cell piece, then will reduce reflection loss as far as possible and increase to absorb.Reducing reflection has two kinds of methods at present, and the one, matte is made on the surface of cell piece, another kind then is antireflective coating on the cell piece plated surface, development along with heliotechnics, increasing to absorb has two kinds of methods at present, and the one, with the increase light transmittance, the 2nd, the membrane structure on surface is spherical.Multiple reflectance coating has appearred at present, have individual layer, double-deck, multilayer is also arranged.The quality of antireflective coating performance depend on film material itself character and with the optical match of silicon chip, it is generally acknowledged that the refractive index of layers of material should satisfy n
a＜n
1＜n
2＜...＜n
i＜n
Si(n wherein
aBe the refractive index of air, n
SiBe the refractive index of silicon, n
1n
2N
iBe respectively the refractive index of each film material).At present film material commonly used has SiO
2, SiNx, Al
2O
3, TiO
2, MgF etc., single layers of material is difficult to obtain desirable anti-reflective effect, existing multilayer film just has preferably anti-reflective effect to wavelength light about 550nm, and limited to the anti-reflective effect of the sunlight of other wavelength.But increase not reporting at present of absorbing.
Summary of the invention
The purpose of this utility model is that the antireflective coating for present simple layer is difficult to obtain desirable anti-reflective effect, multilayer film just has preferably anti-reflective effect to wavelength light about 550nm, and to the limited problem of anti-reflective effect of the sunlight of other wavelength, proposing a kind monocrystaline silicon solar cell laminated antireflection film, is that a kind of quality is high, the reflecting film structure of function admirable.
The technical solution of the utility model is:
One kind monocrystaline silicon solar cell laminated antireflection film, this laminated antireflection film is arranged on the front surface of solar battery mono-crystal silicon substrate, is followed successively by from the inside to the outside ZnO hollow ball film and silicon nitride film.
The thickness of ZnO hollow ball film of the present utility model is 15 ~ 20nm.
The thickness of silicon nitride film of the present utility model is 30 ~ 40nm.
The beneficial effects of the utility model:
The utility model adopts ZnO hollow ball film, its refractive index is 2.03, the refractive index of silicon nitride film is 1.4 ~ 1.7, this stack membrane is compared with monofilm has better optical match characteristic, not only the light at the 550nm of the principal spectrum of silicon response there is excellent anti-reflective effect, and the light of wavelength in 300 ~ 1200nm scope there is good part reflecting effect, thereby improve the conversion efficiency of class monocrystaline silicon solar cell, after adopting this structure, the conversion efficiency of the class monocrystaline silicon solar cell of my company's suitability for industrialized production surpasses 19.2%, is the our times highest level.
Description of drawings
Fig. 1 is structural representation of the present utility model.
Among the figure: 1, silicon nitride film; 2, ZnO hollow ball film; 3, class single crystal silicon substrate.
Embodiment
Below in conjunction with drawings and Examples the utility model is further described.
As shown in Figure 1, a kind monocrystaline silicon solar cell laminated antireflection film at the front surface of solar cell class single crystal silicon substrate 3, is provided with ZnO hollow ball film 2 and silicon nitride film 1 from the inside to the outside successively.
The thickness of ZnO hollow ball film 2 of the present utility model is 15 ~ 20nm; The thickness of silicon nitride film 1 is 30 ~ 40nm.
The used ZnO hollow ball film refractive index of the utility model is 2.03, the refractive index of silicon nitride film is 1.4 ~ 1.7, this stack membrane is compared with monofilm has better optical match characteristic, not only the light at the 550nm of the principal spectrum of silicon response there is excellent anti-reflective effect, and the light of wavelength in 300 ~ 1200nm scope there is good part reflecting effect, thereby improve the conversion efficiency of class monocrystaline silicon solar cell, after adopting this structure, the conversion efficiency of the class crystal silicon solar batteries of my company's suitability for industrialized production surpasses 19.2%, is the our times highest level.
The utility model does not relate to partly all, and the prior art that maybe can adopt same as the prior art is realized.
Claims (4)
1. a kind monocrystaline silicon solar cell laminated antireflection film is characterized in that this laminated antireflection film is arranged on the front surface of solar battery mono-crystal silicon substrate (3), is followed successively by from the inside to the outside ZnO hollow ball film (2) and silicon nitride film (1).
2. class monocrystaline silicon solar cell laminated antireflection film according to claim 1, the thickness that it is characterized in that described ZnO hollow ball film (2) is 15 ~ 20nm.
3. class monocrystaline silicon solar cell laminated antireflection film according to claim 1, the thickness that it is characterized in that described silicon nitride film (1) is 30 ~ 40nm.
4. class monocrystaline silicon solar cell laminated antireflection film according to claim 1, the absorptivity that it is characterized in that described ZnO hollow ball film (2) is 100%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220345993 CN202796967U (en) | 2012-07-17 | 2012-07-17 | Laminated antireflection film for single crystalline silicon-like solar cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220345993 CN202796967U (en) | 2012-07-17 | 2012-07-17 | Laminated antireflection film for single crystalline silicon-like solar cell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202796967U true CN202796967U (en) | 2013-03-13 |
Family
ID=47824169
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220345993 Expired - Fee Related CN202796967U (en) | 2012-07-17 | 2012-07-17 | Laminated antireflection film for single crystalline silicon-like solar cell |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202796967U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102723378A (en) * | 2012-07-17 | 2012-10-10 | 东方电气集团(宜兴)迈吉太阳能科技有限公司 | Laminated antireflective film for single-crystalline-silicon-like solar cell |
-
2012
- 2012-07-17 CN CN 201220345993 patent/CN202796967U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102723378A (en) * | 2012-07-17 | 2012-10-10 | 东方电气集团(宜兴)迈吉太阳能科技有限公司 | Laminated antireflective film for single-crystalline-silicon-like solar cell |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130313 Termination date: 20170717 |