CN202996854U - Solar cell - Google Patents
Solar cell Download PDFInfo
- Publication number
- CN202996854U CN202996854U CN 201220665526 CN201220665526U CN202996854U CN 202996854 U CN202996854 U CN 202996854U CN 201220665526 CN201220665526 CN 201220665526 CN 201220665526 U CN201220665526 U CN 201220665526U CN 202996854 U CN202996854 U CN 202996854U
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- CN
- China
- Prior art keywords
- photoelectric conversion
- layer
- conductor layer
- conversion layer
- electric field
- 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.)
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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
Abstract
The utility model discloses a solar cell which comprises at least one photoelectric conversion layer and at least one conductor layer. An insulating layer is arranged between the photoelectric conversion layer and the conductor layer. The conductor layer is connected with a power supply used to provide an external electric field. The photoelectric conversion layer with different sunlight absorption spectrums is arranged. Simultaneously, the conductor layer is connected with the power supply. The external electric field is formed on the conductor layer. Under an effect of the external electric field, a depletion layer of a PN junction in the photoelectric conversion layer is widened. The external electric field is enhanced so that a solar photon utilization ability and solar energy conversion efficiency are increased.
Description
[technical field]
The utility model relates to the field of photovoltaic cell, particularly a kind of solar cell.
[background technology]
The electricity conversion of solar cell is also very low.Installation and the cost of electricity-generating of solar cell are all relatively high at present, and this causes the relative conventional Power Generation Mode of solar power generation also not have competitiveness.The emphasis of solar energy research to improving solar battery efficiency always.Present research mainly concentrates on the research and development of new material and the improvement of the systems such as optically focused, plated film.
Usually, only have energy just can form electric current more than or equal to the photon irradiation of ionization energy on photocell, solar energies a large amount of in the normal optical battery are wasted.If making the ionization energy reduction that more electronics will be participated in photovoltaic effect goes, can improve the efficiency of light energy utilization.But existing solution all can not change photronic ionization energy.
In addition, the electron hole pair with photon excitation of enough energy is not all to participate in photoelectric current to go, and only has the nearer electron hole pair of distance P N knot to be separated under the effect of internal electric field, forms photoelectric current.
The transformation efficiency of photoelectric conversion element is determined by its absorbing state to solar spectrum on the one hand, is changed on the other hand the situation decision of electric energy by the photoelectronic energy that is absorbed.
The utility model namely proposes for above-mentioned Technical Research.
[utility model content]
The technical problems to be solved in the utility model is to provide a kind of solar cell, be provided with the photoelectric conversion layer of different sunlight absorption spectras, conductor layer is connected with power supply simultaneously, form external electric field on photoelectric conversion layer, under the effect of external electric field, the depletion layer of the inner PN junction of photoelectric conversion layer will be broadened, and internal electric field is enhanced, and makes it to have solar photon and utilizes ability and the higher characteristics of solar conversion efficiency.
For solving the problems of the technologies described above, a kind of solar cell of the utility model adopts following technical scheme:
A kind of solar cell of the utility model, comprise one deck photoelectric conversion layer and one deck conductor layer at least at least, be provided with insulating barrier between described photoelectric conversion layer and conductor layer, described conductor layer is connected be used to the power supply that external electric field is provided, and the material that described photoelectric conversion layer adopts can produce photoelectric effect.
Can form internal electric field on described photoelectric conversion layer, described internal electric field direction is identical with external electric field direction on conductor layer.
Photoelectric conversion layer described in the utility model is one deck, and described conductor layer is one deck, and described insulating barrier is one deck; Perhaps described photoelectric conversion layer is three layers, and described conductor layer is three layers, and described insulating barrier is five layers, is separated by insulating barrier between described photoelectric conversion layer and conductor layer.As required, photoelectric conversion layer, conductor layer and insulating barrier can be the random layer number.
Described photoelectric conversion layer is arranged on different positions, has different sunlight absorption spectras.
A kind of solar cell of the utility model, be provided with the photoelectric conversion layer of different sunlight absorption spectras, conductor layer is connected with power supply simultaneously, form external electric field on conductor layer, under the effect of external electric field, the depletion layer of the inner PN junction of photoelectric conversion layer will be broadened, and internal electric field is enhanced, and makes it solar photon and utilizes ability and solar conversion efficiency to have higher characteristics.
[description of drawings]
Below in conjunction with accompanying drawing, embodiment of the present utility model is described in further detail,
Wherein:
Fig. 1 is the structural representation of the utility model one deck photoelectric conversion layer and one deck conductor layer.
Fig. 2 is the structural representation of three layers of photoelectric conversion layer of the utility model and three layers of conductor layer.
[embodiment]
Below in conjunction with accompanying drawing, execution mode of the present utility model is elaborated.
A kind of solar cell of the utility model, on the solar radiation direction, ground floor is photoelectric conversion layer 1, be used for light energy conversion is become electric energy, and discharge by the electrode of photoelectric conversion layer both sides Shang Xia 1, described conductor layer 2 is positioned over the rear along optical axis of photoelectric conversion layer 1 usually in order to external electric field 6 to be provided, and internal electric field 5 directions on described photoelectric conversion layer 1 are identical with external electric field 6 directions on conductor layer 2.Be insulating barrier 3 between photoelectric conversion layer 1 and conductor layer 2, in order to photoelectric conversion layer 1 and conductor layer 2 are separated, an end of power supply 4 is connected with conductor layer 2 by wire, other end ground connection.
Can add last layer conductor layer 2 on photoelectric conversion layer 1, this conductor layer 2 must be transparent material, to guarantee that light can shine photoelectric conversion layer 1 from conductor layer 2, then two conductor layers 2 are connected with power supply 4 the two poles of the earth, add external electric field 6, can promote better the absorption of low light level, and the electron hole pair that excites of useful photon, make it to participate in photoelectric current and go, to improve absorption and the power conversion of 1 pair of luminous energy of photoelectric conversion layer, improve absorption efficiency and the conversion efficiency of sunlight.
The solar cell that Fig. 2 is comprised of Heterolamellar photovoltaic conversion layer 1 and multi-layer conductive layer 2, three layers of conductor layer 2 have been arranged alternately, three layers of photoelectric conversion layer 1 and five layer insulatings 3, the photoelectric conversion layer 1 of diverse location setting has sunlight absorption spectra separately, during sunlight process photoelectric conversion layer 1, energy is greater than E
1The photon of-eV1 is absorbed, and inspiring and discharging an energy after electron hole pair is E+eV1-E
1Secondary photon, energy is less than E
1The photon of-eV1 can not be absorbed, and these energy are less than E
1The photon of-eV1 and secondary photon E+eV1-E
1Pass together photoelectric conversion layer 1, continue to propagate, conductor layer 2 after photoelectric conversion layer 1 and insulating barrier 3 must be all transparent, perhaps transparent to the photon that sees through this photoelectric conversion layer 1, so that these photons can see through conductor layer 2 and insulating barrier 3 is absorbed by other layer photoelectric conversion layer 1.
Claims (4)
1. solar cell, it is characterized in that comprising one deck photoelectric conversion layer (1) and one deck conductor layer (2) at least at least, be provided with insulating barrier (3) between described photoelectric conversion layer (1) and conductor layer (2), described conductor layer (2) is connected be used to the power supply that external electric field (6) are provided (4).
2. by the described a kind of solar cell of claim 1, it is characterized in that can forming internal electric field (5) on described photoelectric conversion layer (1), described internal electric field (5) direction is identical with external electric field (6) direction on conductor layer (2).
3. by the described a kind of solar cell of claim 1, it is characterized in that described photoelectric conversion layer (1) is one deck, described conductor layer (2) is one deck, and described insulating barrier (3) is one deck.
4. by the described a kind of solar cell of claim 1, it is characterized in that described photoelectric conversion layer (1) is three layers, described conductor layer (2) is three layers, and described insulating barrier (3) is five layers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220665526 CN202996854U (en) | 2012-12-05 | 2012-12-05 | Solar cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220665526 CN202996854U (en) | 2012-12-05 | 2012-12-05 | Solar cell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202996854U true CN202996854U (en) | 2013-06-12 |
Family
ID=48567989
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220665526 Expired - Lifetime CN202996854U (en) | 2012-12-05 | 2012-12-05 | Solar cell |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202996854U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103000701A (en) * | 2012-12-05 | 2013-03-27 | 中山联合光电科技有限公司 | Novel solar battery |
-
2012
- 2012-12-05 CN CN 201220665526 patent/CN202996854U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103000701A (en) * | 2012-12-05 | 2013-03-27 | 中山联合光电科技有限公司 | Novel solar battery |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP03 | Change of name, title or address |
Address after: 528400 Zhongshan Torch Development Zone, Guangdong Road, No. 10 Patentee after: UNION OPTECH Co.,Ltd. Address before: 528400 Guangdong province Zhongshan Dongli Torch Development Zone torch joint electronic city building A3 Patentee before: UNION OPTECH Co.,Ltd. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20130612 |
|
| CX01 | Expiry of patent term |