CN209487521U - Thin-film solar cells based on micron and nanometer composite structure - Google Patents
Thin-film solar cells based on micron and nanometer composite structure Download PDFInfo
- Publication number
- CN209487521U CN209487521U CN201920515817.0U CN201920515817U CN209487521U CN 209487521 U CN209487521 U CN 209487521U CN 201920515817 U CN201920515817 U CN 201920515817U CN 209487521 U CN209487521 U CN 209487521U
- Authority
- CN
- China
- Prior art keywords
- micron
- composite structure
- nanometer composite
- thin
- solar cells
- 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.)
- Active
Links
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
Landscapes
- Photovoltaic Devices (AREA)
Abstract
The utility model discloses a kind of thin-film solar cells based on micron and nanometer composite structure, including stack gradually from top to bottom transparent window layer, window electrode, active layer, back conductive electrode reflecting layer, it further include micron and nanometer composite structure, which is set to the transparent window layer bottom surface or active layer bottom surface.The utility model proposes periodical micron and nanometer composite structure is introduced in single film solar battery structure, the micron and nanometer composite structure can take into account the advantages of micrometer structure and nanostructure, and the multiple mechanism for promoting battery performance can be introduced in solar cells, to greatly promote the photoelectric conversion efficiency of solar battery.
Description
Technical field
The utility model relates to a kind of thin-film solar cells, more particularly to a kind of based on the thin of micron and nanometer composite structure
Film solar cell.
Background technique
As the important material base of survival and development of mankind, the energy is always the focus of today's society, and is restricted
One of an important factor for socio-economic development.The exhaustion of conventional fossil fuel and the environmental pollution got worse, force people
Original energy resource structure is adjusted, and the green energy resource of clean and environmental protection becomes optimal selection, solar energy uses it as inexhaustible
Inexhaustible renewable energy, the advantages that by its universal permanent, huge and green non-pollution, become people's research hot spot it
One.
Solar battery is to convert the solar into the most direct device of electric energy.Currently, the solar battery market share is most
Big mainly crystal silicon solar energy battery, but due to its preparation process complexity, cost of material is high, thus on civilian by
Limitation.In order to reduce the preparation cost for preparing solar battery, other novel solar batteries also grow up therewith, including
Non-crystal silicon solar cell, compound semiconductor solar battery, organic thin film solar cell, dye-sensitized solar cells
With perovskite solar battery etc..Nevertheless, how further to promote solar cell photoelectric transfer efficiency is still
The emphasis of people's research.
It is designed by structure, micro/nano structure is introduced inside thin-film solar cells, can effectively promote solar battery
Photoelectric conversion efficiency.Wherein, micrometer structure can increase light path of the incident light inside solar battery active layer, to increase
Add the light absorption of solar battery；Introduce nanostructure, can excite surface with nanostructured metal electrode interface etc. from
Sub- excimer is imitated using the light absorption that the Electromagnetic enhancement effect of surface plasmons induction can effectively increase solar battery
Rate introduces metal nanoparticle, and the Electromagnetic enhancement effect using the local surface plasma of metal nanoparticle induction has
Effect increases solar battery efficiency of light absorption, while having certain microstructure appearance by the preparation on inorganic solar cell surface
Flannelette, can effectively reduce the reflection loss of battery surface, increase the efficiency of light absorption etc. of solar battery.
Currently, the processing physical method of micro/nano structure mainly includes photoetching technique, laser processing technology, nano impression,
Scanning beam etching, focused ion beam etc., chemical method includes chemical synthesis, self-service dress of molecule etc..Utilize these processing sides
Method can be in the micro/nano structure of inside solar energy battery introducing different-shape.Nevertheless, for single solar battery device
For part, its internal micrometer structure or nanostructure are introduced, their pattern is still single, and the period is also single
's.Therefore using micro-structure promoted thin-film solar cells performance mechanism be also it is single, lead to thin-film solar cells light
The amplitude that photoelectric transformation efficiency is promoted remains to that there are biggish limitations.
Utility model content
The utility model provides a kind of thin-film solar cells based on micron and nanometer composite structure, and which overcome existing skills
The thin-film solar cells of art is using shortcoming present in micro/nano structure.
The technical scheme adopted by the utility model to solve the technical problem is as follows: the film based on micron and nanometer composite structure is too
It is positive can battery, including stack gradually from top to bottom transparent window layer, window electrode, active layer, back conductive electrode reflecting layer, also
Including micron and nanometer composite structure, which is set to the transparent window layer bottom surface or active layer bottom surface.
Further, the micron and nanometer composite structure is optical grating construction.
Further, the optical grating construction be one-dimensional barcode grating, cross section be in rectangle or sinusoidal or trapezoidal, or
Person, the optical grating construction are two-dimensional lattice grating, and the surface topography at dot matrix midpoint is rounded or hexagon or rectangle, in dot matrix
The point of both direction is vertical distribution or is distributed in 60 degree of angles.
Further, the micron and nanometer composite structure includes nano periodic structure and micrometer structure, nano periodic structure point
Cloth is on micrometer structure surface.
Further, the screen periods of the micrometer structure are 2~10 microns, and grating height is 30~100 nanometers；It is described
The screen periods of nano periodic structure are 100~900 nanometers, and grating height is 30~70 nanometers.Further, described micro-nano
Composite construction is located at the transparent window layer bottom surface, and the material of the micron and nanometer composite structure is photoresist.
Further, the window electrode bottom surface, active layer bottom surface, back conductive electrode reflecting layer bottom surface utilize high vacuum heat
Deposition method replicates the micron and nanometer composite structure respectively.
Further, the material of the micron and nanometer composite structure is active layer material, and the active layer bottom surface utilizes nanometer
Coining or laser ablation prepare the micron and nanometer composite structure.
Further, the transparent window layer is glass material, and the back conductive electrode reflecting layer is metallic film.
Compared to the prior art, the utility model has the following beneficial effects:
The utility model proposes periodical micron and nanometer composite structure is introduced in single film solar battery structure, this is micro-
Nano composite structure can take into account the advantages of micrometer structure and nanostructure, and can introduce multiple promotion in solar cells
The mechanism of battery performance, to greatly improve the photoelectric conversion efficiency of solar battery.
The utility model is described in further detail with reference to the accompanying drawings and embodiments；But a kind of base of the utility model
It is not limited to the embodiment in the thin-film solar cells of micron and nanometer composite structure.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of one the utility model of embodiment；
Fig. 2 is the structural schematic diagram of two the utility model of embodiment.
Fig. 3 is the absorption curve figure of flat device and micron grating device；
Fig. 4 is the absorption spectrum incremental rate curve figure of micron grating device；
Fig. 5 is the absorption curve figure of flat device and different cycles nanometer grating device；
Fig. 6 is the absorption spectrum incremental rate curve figure of nanometer grating device；
Fig. 7 is the absorption curve figure of flat device and micro-nano composite grating device；
Fig. 8 is the absorption spectrum increment graph of micro-nano composite grating device.
Specific embodiment
Embodiment one
Shown in Figure 1, a kind of thin-film solar cells based on micron and nanometer composite structure of the utility model is applicable in
In amorphous silicon thin-film solar cell, inorganic compound semiconductor thin-film solar cells, organic thin film solar cell and calcium
Titanium ore solar battery etc., transparent window layer 2, window electrode 4, active layer 5, back conduction including stacking gradually from top to bottom are electric
Pole reflecting layer 6,2 top surface of transparent window layer are light incident surface (arrow 1 illustrates light incident direction in Fig. 1).The utility model also wraps
Micron and nanometer composite structure 3 is included, which is set to 2 bottom surface of transparent window layer.The micro-nano composite junction
Structure 3 specifically includes nano periodic structure and micrometer structure, and micrometer structure is distributed in 2 bottom surface of transparent window layer, nano periodic structure
It is distributed in micrometer structure surface (referring to the micrometer structure one side opposite with 2 bottom surface of transparent window layer).The transparent window layer 2 is glass
Glass material, the back conductive electrode reflecting layer 6 are metallic film.
In the present embodiment, the micron and nanometer composite structure 3 is optical grating construction, the screen periods of the micrometer structure are 2~
10 microns, grating height is 30~100 nanometers；The screen periods of the nano periodic structure are 100~900 nanometers, and grating is high
Degree is 30~70 nanometers.The optical grating construction can be one-dimensional barcode grating, and cross section is in rectangle or sinusoidal or trapezoidal etc..
The optical grating construction is also possible to for two-dimensional lattice grating, and the surface topography at dot matrix midpoint is rounded or hexagon or rectangle
Deng the point of both direction is vertical distribution or is distributed in 60 degree angles in dot matrix.
In the present embodiment, the material of the micron and nanometer composite structure 3 is photoresist, can pass through photoetching technique and the double light of laser
The method that beam interferometer technology combines is prepared on photoresist surface.The window electrode 4, active layer 5, back conductive electrode reflection
Layer 6 can be prepared by the methods of vacuum heat deposition, spin coating, extension and sputtering, therefore can be in 4 bottom surface of window electrode, active
The micron and nanometer composite structure 3 of 2 bottom surface of transparent window layer is effectively replicated in 5 bottom surface of layer, back 6 bottom surface of conductive electrode reflecting layer, also that is,
Make 4 bottom surface of window electrode, 5 bottom surface of active layer, back 6 bottom surface of conductive electrode reflecting layer be also respectively formed with it is described micro-nano multiple
Structure is closed, as shown in Figure 1.
Embodiment two
It is shown in Figure 2, a kind of thin-film solar cells based on micron and nanometer composite structure of the utility model, with
The difference of above-described embodiment one is: the micron and nanometer composite structure 3 is set to 5 bottom surface of active layer.And it is micro-nano compound
The material of structure 3 is active layer material, and therefore, the active layer 5 is the active layer with micron and nanometer composite structure 3.
In the present embodiment, the micron and nanometer composite structure 3 specifically includes nano periodic structure and micrometer structure, micrometer structure
It is distributed in 5 bottom surface of active layer, nano periodic structure is distributed in micrometer structure surface and (refers to that micrometer structure is opposite with 5 bottom surface of active layer
One side).The micron and nanometer composite structure 3 equally uses optical grating construction, and the screen periods of the micrometer structure are 2~10 micro-
Rice, grating height are 30~100 nanometers；The screen periods of the nano periodic structure are 100~900 nanometers, and grating height is
30~70 nanometers.The pattern of the optical grating construction is cross section in rectangle or sinusoidal or trapezoidal etc. bar shaped one-dimensional grating, or
Person, the surface topography of the optical grating construction are the two-dimensional lattice grating of round or hexagon or rectangle etc..
In the present embodiment, the micron and nanometer composite structure 3 can be realized using the method for nano impression, particular by light
The method that lithography is combined with double laser beams interference technique prepares the nanometer of micron and nanometer composite structure 3 on photoresist surface
Impression block imprints out micron and nanometer composite structure 3 in 5 bottom surface of active layer using the method for nano impression, finally vapor deposition back
Conductive electrode reflecting layer 6, to be introduced in the active layer 5 of solar battery and the interface in back conductive electrode reflecting layer 6 micro-nano
Composite construction 3.In addition, the micron and nanometer composite structure 3 can also be set to 5 bottom surface of active layer using laser ablation process.
Following the utility model is using device architecture as transparent window layer (glass)/micro-nano compound bar shaped grating/window electricity
Pole (Au15nm)/active layer/back electrode reflecting layer (PEDOT:PSS 60nm/P3HT:PCBM 125nm) (Ag 100nm) is mould
Type special case (refers to the general thin sun of not set micrometer structure, nanostructure, micron and nanometer composite structure with planar structure device
Can battery), micron grating device (referring to the thin-film solar cells for only setting micro meter periodic optical grating construction), different cycles nanometer light
Gate device (thin-film solar cells for referring to setting nanometer period grat-ing structure) is compared in absorption spectra, absorption spectrum increment.
Wherein in the device of the utility model, poly- (3,4- Asia second two itch base thiophene) (Poly (3,4-
), ethylenedioxythiophene PEDOT): poly- (styrene sulfonic acid) (poly (styrenesulfonate), PSS) conduct
Hole transmission layer, poly- 3- ethylthiophene (Poly (3-hexylthiophene), P3HT) and (6,6)-phenyl-C61 methyl butyrate
(Plenyl-C61-butyric acid Methyl Ester, PCBM) is respectively as the donor and acceptor material of electronics.
Using finite time-domain difference (Finite Difference Time Domain, FDTD) algorithm, incident light is vertical
Incident vertical magnetic field (transverse magnetic, TM) polarised light.Using periodic boundary condition in horizontal direction
(Periodic Boundary Condition, PBC), light incident direction boundary condition use perfect domination set (Perfectly
Matched Layers,PML).Fig. 3, Fig. 4 indicate with the period to be 6 μm, period of height 50nm be micron grating device and
Absorption spectrum of the planar structure device under the thickness of identical active layer, and in contrast to planar structure device, micron rasterizer
The absorption increment spectrogram of part can be seen that after increasing micro meter periodic optical grating construction by Fig. 3, Fig. 4, because of micro meter periodic grating scattering
With absorption of the microcavity resonant check active layer to incident light.Fig. 5, Fig. 6 indicate nanometer grating height be 10nm, screen periods from
Absorption spectrum of the nanometer grating device and plane structure devices of 150~400nm under the thickness of identical active layer, and comparison
In planar structure device, the absorption increment spectrogram of nanometer grating device.It is can be seen that by Fig. 5, Fig. 6 because of nanometer periodic optical grating knot
Structure excites the surface phasmon of metallic reflective electrodes and active layer interface, so that the Electromagnetic enhancement induction of the interface is imitated
It answers, significantly improves active layer 5 to 550~700nm wave band absorbing incident light, and with the increase influx and translocation of screen periods
Peak red shift.Fig. 7, Fig. 8 shows the thin-film solar cells device model of the utility model (band micron and nanometer composite structure) and planes
Absorption spectrum of the structure devices under the thickness of identical active layer, and in contrast to planar structure device, the utility model it is thin
The absorption increment spectrogram of film solar cell.It can be seen that the scattering because of composite grating, microcavity resonance and surface by Fig. 7, Fig. 8
The Electromagnetic enhancement effect of phasmon induction significantly increases the active layer light absorption of organic solar batteries.
Therefore, a kind of thin-film solar cells based on micron and nanometer composite structure of the utility model has micro meter periodic
Interfacial area between light scattering process caused by optical grating construction and increase each layer of battery, promotes solar battery light absorption
Advantage；Also the surface phasmon of metallic reflective electrodes and active layer interface with the excitation of nanometer period grat-ing structure, induction
Electromagnetic enhancement phenomenon, improves absorption of the active layer to incident light, and a variety of mechanisms of action improve the photoelectricity of solar battery jointly
Transformation efficiency.
The utility model introduces pattern and period adjustable micron and nanometer composite structure in solar cell device structure,
Its structure is that nano periodic structure is distributed in micrometer structure surface, wherein the pattern of micrometer structure and period can pass through selection
The mask plate of different pattern is adjusted, and the pattern of nano periodic structure and period can pass through the laser during change laser interference
The quantity of light beam and angle control.Micron and nanometer composite structure can take into account the advantages of micrometer structure and nanostructure, in the sun
Mechanism and multiple can be introduced in battery, to promote the performance of solar battery.
Above-described embodiment only is used to further illustrate a kind of film based on micron and nanometer composite structure of the utility model too
Positive energy battery, but the utility model is not limited to embodiment, it is all to implement according to the technical essence of the utility model to above
Any simple modification, equivalent change and modification made by example, each fall in the protection scope of technical solutions of the utility model.
Claims (9)
1. the thin-film solar cells based on micron and nanometer composite structure, including stack gradually from top to bottom transparent window layer, window
Mouth electrode, active layer, back conductive electrode reflecting layer, it is characterised in that: it further include micron and nanometer composite structure, the micro-nano composite junction
Structure is set to the transparent window layer bottom surface or active layer bottom surface.
2. the thin-film solar cells according to claim 1 based on micron and nanometer composite structure, it is characterised in that: described micro-
Nano composite structure is optical grating construction.
3. the thin-film solar cells according to claim 2 based on micron and nanometer composite structure, it is characterised in that: the light
Grid structure is one-dimensional barcode grating, and cross section is in rectangle or sinusoidal or trapezoidal, alternatively, the optical grating construction is two-dimensional lattice
The surface topography of grating, dot matrix midpoint is rounded or hexagon or rectangle, in dot matrix the point of both direction be vertical distribution or
It is distributed in 60 degree of angles.
4. the thin-film solar cells according to claim 2 based on micron and nanometer composite structure, it is characterised in that: described micro-
Nano composite structure includes nano periodic structure and micrometer structure, and nano periodic structure is distributed in micrometer structure surface.
5. the thin-film solar cells according to claim 4 based on micron and nanometer composite structure, it is characterised in that: described micro-
The screen periods of rice structure are 2~10 microns, and grating height is 30~100 nanometers；The screen periods of the nano periodic structure
It is 100~900 nanometers, grating height is 30~70 nanometers.
6. the thin-film solar cells according to claim 1 based on micron and nanometer composite structure, it is characterised in that: described micro-
Nano composite structure is located at the transparent window layer bottom surface, and the material of the micron and nanometer composite structure is photoresist.
7. the thin-film solar cells according to claim 5 based on micron and nanometer composite structure, it is characterised in that: the window
Mouth electrode bottom surface, active layer bottom surface, back conductive electrode reflecting layer bottom surface replicate the micron and nanometer composite structure respectively.
8. the thin-film solar cells according to claim 1 based on micron and nanometer composite structure, it is characterised in that: described micro-
The material of nano composite structure is active layer material, and the active layer bottom surface is prepared described using nano impression or laser ablation
Micron and nanometer composite structure.
9. the thin-film solar cells according to claim 1 based on micron and nanometer composite structure, it is characterised in that: described
Bright Window layer is glass material, and the back conductive electrode reflecting layer is metallic film.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920515817.0U CN209487521U (en) | 2019-04-16 | 2019-04-16 | Thin-film solar cells based on micron and nanometer composite structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920515817.0U CN209487521U (en) | 2019-04-16 | 2019-04-16 | Thin-film solar cells based on micron and nanometer composite structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209487521U true CN209487521U (en) | 2019-10-11 |
Family
ID=68135399
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920515817.0U Active CN209487521U (en) | 2019-04-16 | 2019-04-16 | Thin-film solar cells based on micron and nanometer composite structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209487521U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021209083A1 (en) * | 2020-04-14 | 2021-10-21 | Helmholtz-Zentrum Berlin für Materialien und Energie Gesellschaft mit beschränkter Haftung | Diffraction grating and method for using the diffraction grating |
-
2019
- 2019-04-16 CN CN201920515817.0U patent/CN209487521U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021209083A1 (en) * | 2020-04-14 | 2021-10-21 | Helmholtz-Zentrum Berlin für Materialien und Energie Gesellschaft mit beschränkter Haftung | Diffraction grating and method for using the diffraction grating |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Enrichi et al. | Plasmonic enhanced solar cells: Summary of possible strategies and recent results | |
| CN101740722B (en) | Almost perfect absorbing structure for wide wave band | |
| CN102315290B (en) | Full-spectrum absorption enhanced hydrogenated amorphous silicon hydride thin film solar cell | |
| Niggemann et al. | Functional microprism substrate for organic solar cells | |
| CN102117889B (en) | Method for preparing polymer solar cell with embedded grating structure | |
| CN102709402B (en) | Thin film solar cell of graphic based metal substrate and preparation method thereof | |
| CN103035755B (en) | Holographic solar photovoltaic battery and manufacturing method thereof | |
| CN102184995B (en) | Long-range plasmon waveguide array synergy unit for solar cell | |
| CN103022267A (en) | Production method of ZnO spherical-empty-shell nanoparticle array | |
| Lipovšek et al. | Optimization of microtextured light-management films for enhanced light trapping in organic solar cells under perpendicular and oblique illumination conditions | |
| CN103178156A (en) | Preparation method and application of thin-film solar cell light trapping structured glass | |
| CN110010709A (en) | Thin-film solar cells based on micron and nanometer composite structure | |
| CN102157627B (en) | Synergy method of surface plasmon metallic nano-chain in solar battery | |
| CN209487521U (en) | Thin-film solar cells based on micron and nanometer composite structure | |
| Tao et al. | High absorption perovskite solar cell with optical coupling structure | |
| Borse et al. | Efficient light trapping and interface engineering for performance enhancement in PTB7-Th: PC70BM organic solar cells | |
| CN103646982A (en) | Light trapping structure for thin film solar cell and manufacturing method thereof | |
| CN102368538B (en) | Organic film solar battery capable of enhancing light absorption efficiency | |
| CN202094161U (en) | Long-range plasma excimer waveguide array synergy unit for solar cell | |
| CN105576054A (en) | Nanowire intermediate band solar cell structure based on butterfly-shaped plasmon antenna enhancement | |
| CN102881728B (en) | Metamaterial structure based thin-film solar cell and preparation method thereof | |
| CN109103334A (en) | A kind of deep etching metal grating structure improving organic solar batteries absorption efficiency | |
| CN102544376B (en) | Polymer solar cell with subwavelength anti-reflective structure and manufacturing method for polymer solar cell | |
| Mayer et al. | Self-contained optical enhancement film for printed photovoltaics | |
| Zhou et al. | The coupling effects of the different carrier generation rate distributions and recombination caused by nanostructures on the all-back-contact ultra-thin silicon solar cell performances |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |