WO2004112162A1 - Organische solarzelle mit einer zwischenschicht mit asymmetrischen transporteigenschaften - Google Patents
Organische solarzelle mit einer zwischenschicht mit asymmetrischen transporteigenschaftenInfo
- Publication number
- WO2004112162A1 WO2004112162A1 PCT/EP2004/050915 EP2004050915W WO2004112162A1 WO 2004112162 A1 WO2004112162 A1 WO 2004112162A1 EP 2004050915 W EP2004050915 W EP 2004050915W WO 2004112162 A1 WO2004112162 A1 WO 2004112162A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- intermediate layer
- electron
- layer
- photovoltaic cell
- cell according
- Prior art date
Links
- 239000000370 acceptor Substances 0.000 claims description 19
- 239000000463 material Substances 0.000 claims description 11
- 230000007547 defect Effects 0.000 claims description 10
- 238000004770 highest occupied molecular orbital Methods 0.000 claims description 4
- 230000005611 electricity Effects 0.000 claims description 3
- 238000004776 molecular orbital Methods 0.000 claims description 2
- 238000013086 organic photovoltaic Methods 0.000 claims description 2
- 229910010413 TiO 2 Inorganic materials 0.000 claims 1
- 239000010410 layer Substances 0.000 description 106
- 239000002800 charge carrier Substances 0.000 description 14
- 239000000758 substrate Substances 0.000 description 12
- 230000000694 effects Effects 0.000 description 3
- 229920001609 Poly(3,4-ethylenedioxythiophene) Polymers 0.000 description 2
- YTPLMLYBLZKORZ-UHFFFAOYSA-N Thiophene Chemical compound C=1C=CSC=1 YTPLMLYBLZKORZ-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 239000006117 anti-reflective coating Substances 0.000 description 2
- 239000004020 conductor Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000004768 lowest unoccupied molecular orbital Methods 0.000 description 2
- 230000006798 recombination Effects 0.000 description 2
- 238000005215 recombination Methods 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 2
- GKWLILHTTGWKLQ-UHFFFAOYSA-N 2,3-dihydrothieno[3,4-b][1,4]dioxine Chemical compound O1CCOC2=CSC=C21 GKWLILHTTGWKLQ-UHFFFAOYSA-N 0.000 description 1
- XMWRBQBLMFGWIX-UHFFFAOYSA-N C60 fullerene Chemical compound C12=C3C(C4=C56)=C7C8=C5C5=C9C%10=C6C6=C4C1=C1C4=C6C6=C%10C%10=C9C9=C%11C5=C8C5=C8C7=C3C3=C7C2=C1C1=C2C4=C6C4=C%10C6=C9C9=C%11C5=C5C8=C3C3=C7C1=C1C2=C4C6=C2C9=C5C3=C12 XMWRBQBLMFGWIX-UHFFFAOYSA-N 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000012876 carrier material Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 229920001940 conductive polymer Polymers 0.000 description 1
- 229920000547 conjugated polymer Polymers 0.000 description 1
- XCJYREBRNVKWGJ-UHFFFAOYSA-N copper(II) phthalocyanine Chemical compound [Cu+2].C12=CC=CC=C2C(N=C2[N-]C(C3=CC=CC=C32)=N2)=NC1=NC([C]1C=CC=CC1=1)=NC=1N=C1[C]3C=CC=CC3=C2[N-]1 XCJYREBRNVKWGJ-UHFFFAOYSA-N 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 239000002019 doping agent Substances 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000007772 electrode material Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- RTZKZFJDLAIYFH-UHFFFAOYSA-N ether Substances CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 1
- 229910003472 fullerene Inorganic materials 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 125000000623 heterocyclic group Chemical group 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- AMGQUBHHOARCQH-UHFFFAOYSA-N indium;oxotin Chemical compound [In].[Sn]=O AMGQUBHHOARCQH-UHFFFAOYSA-N 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000012044 organic layer Substances 0.000 description 1
- 239000011368 organic material Substances 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 229920000301 poly(3-hexylthiophene-2,5-diyl) polymer Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 229930192474 thiophene Natural products 0.000 description 1
Classifications
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K30/00—Organic devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation
- H10K30/80—Constructional details
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L31/04—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof adapted as photovoltaic [PV] conversion devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y10/00—Nanotechnology for information processing, storage or transmission, e.g. quantum computing or single electron logic
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K30/00—Organic devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K30/00—Organic devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation
- H10K30/10—Organic devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation comprising heterojunctions between organic semiconductors and inorganic semiconductors
- H10K30/15—Sensitised wide-bandgap semiconductor devices, e.g. dye-sensitised TiO2
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K30/00—Organic devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation
- H10K30/20—Organic devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation comprising organic-organic junctions, e.g. donor-acceptor junctions
- H10K30/211—Organic devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation comprising organic-organic junctions, e.g. donor-acceptor junctions comprising multiple junctions, e.g. double heterojunctions
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K30/00—Organic devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation
- H10K30/30—Organic devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation comprising bulk heterojunctions, e.g. interpenetrating networks of donor and acceptor material domains
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K30/00—Organic devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation
- H10K30/30—Organic devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation comprising bulk heterojunctions, e.g. interpenetrating networks of donor and acceptor material domains
- H10K30/353—Organic devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation comprising bulk heterojunctions, e.g. interpenetrating networks of donor and acceptor material domains comprising blocking layers, e.g. exciton blocking layers
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K30/00—Organic devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation
- H10K30/80—Constructional details
- H10K30/81—Electrodes
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K85/00—Organic materials used in the body or electrodes of devices covered by this subclass
- H10K85/10—Organic polymers or oligomers
- H10K85/111—Organic polymers or oligomers comprising aromatic, heteroaromatic, or aryl chains, e.g. polyaniline, polyphenylene or polyphenylene vinylene
- H10K85/113—Heteroaromatic compounds comprising sulfur or selene, e.g. polythiophene
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K85/00—Organic materials used in the body or electrodes of devices covered by this subclass
- H10K85/10—Organic polymers or oligomers
- H10K85/111—Organic polymers or oligomers comprising aromatic, heteroaromatic, or aryl chains, e.g. polyaniline, polyphenylene or polyphenylene vinylene
- H10K85/113—Heteroaromatic compounds comprising sulfur or selene, e.g. polythiophene
- H10K85/1135—Polyethylene dioxythiophene [PEDOT]; Derivatives thereof
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K85/00—Organic materials used in the body or electrodes of devices covered by this subclass
- H10K85/20—Carbon compounds, e.g. carbon nanotubes or fullerenes
- H10K85/211—Fullerenes, e.g. C60
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K85/00—Organic materials used in the body or electrodes of devices covered by this subclass
- H10K85/20—Carbon compounds, e.g. carbon nanotubes or fullerenes
- H10K85/211—Fullerenes, e.g. C60
- H10K85/215—Fullerenes, e.g. C60 comprising substituents, e.g. PCBM
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K85/00—Organic materials used in the body or electrodes of devices covered by this subclass
- H10K85/30—Coordination compounds
- H10K85/311—Phthalocyanine
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K85/00—Organic materials used in the body or electrodes of devices covered by this subclass
- H10K85/30—Coordination compounds
- H10K85/381—Metal complexes comprising a group IIB metal element, e.g. comprising cadmium, mercury or zinc
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K85/00—Organic materials used in the body or electrodes of devices covered by this subclass
- H10K85/60—Organic compounds having low molecular weight
- H10K85/615—Polycyclic condensed aromatic hydrocarbons, e.g. anthracene
- H10K85/621—Aromatic anhydride or imide compounds, e.g. perylene tetra-carboxylic dianhydride or perylene tetracarboxylic di-imide
-
- 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
Definitions
- the present invention relates to an organic solar cell with a photoactive layer composed of two molecular components, namely an electron donor and an electron acceptor and with two electrodes provided on both sides of the photoactive layer.
- photo shunt In the case of organic solar cells and photodetectors (in particular bulk heterojunction polymer solar cells), a reduction in the parallel resistance with increasing illumination intensity is observed. This phenomenon is called photo shunt.
- the photo shunt leads to a reduction in the fill factor and thus to a reduction in the efficiency of the solar cell.
- One way of increasing the series resistance and the selectivity of the contacts is known from WO 01/84645 A1.
- the present invention provides a photovoltaic cell with a photoactive layer and two electrodes, which is characterized by at least one intermediate layer with asymmetrical conductivity, which is arranged between at least one of the electrodes and the photoactive layer.
- the expression “asymmetrical conductivity” denotes asymmetrical mobility for the different charge carriers.
- One advantage of the present invention is that, with a suitable choice of the material of the intermediate layer, in particular in the case of organic solar cells, no doping of the intermediate layer is necessary. This also has all the disadvantages how stabilization problems with the dopants are avoided, especially in organic layers.
- the intermediate layer preferably has a (large) band gap which is at least equal to or larger than the band gap of the photoactive layer. It lies, for example, in the range from 1.7 to 6, 1 eV (electron volts) or preferably in a range from 2.5 to 3.7 eV.
- a layer with a large band gap is preferably at least semi-transparent or even transparent.
- the photovoltaic cell has an intermediate layer with a large band gap and asymmetrical conductivity between the two electrodes and the photoactive layer.
- a layer with a large band gap is essentially transparent or at least semi-transparent.
- the expression "asymmetrical conductivity" denotes an asymmetrical mobility for the different charge carriers. If two layers of this type are used, one layer can conduct electrons and one layer of defect electrons. By connecting the two layers in series, the paral 200307142
- the photoactive layer has a region with electron donors and a region with electron acceptors.
- the area of the electron acceptors is assigned to the cathode.
- the photovoltaic cell is characterized in that the intermediate layer is arranged between the region of the electron acceptors and the cathode (negative electrode) and has a material that conducts electricity mainly through electrons.
- the photoactive layer has an area with electron donors and an area with electron acceptors.
- the area of the electron donors is assigned to the anode (positive electrode).
- the photovoltaic cell is characterized in that the intermediate layer is arranged between the area of the electron donors and the anode and has a material that conducts current mainly through defect electrons (holes, positive charges).
- the asymmetry of the conductivity is thus assigned to one of the electrodes or one of the active layers. This means that a layer of an electron conductor is arranged between the cathode and the region of the electron acceptors. This also means that a layer of a defect electron conductor is arranged between the anode and the region of the electron donors. , 200307142
- the electron-conducting intermediate layer between the electron acceptors and the cathode contains TXO 2 or C ⁇ o.
- the photovoltaic cell is characterized in that the defect-electron-conducting intermediate layer comprises PEDOT.
- PEDOT poly-3,4-ethylenedioxythiophene
- the defect-electron-conducting intermediate layer comprises PEDOT.
- a further advantageous embodiment of the present invention is characterized in that the conduction band of the electron-conducting intermediate layer is matched to the highest occupied molecular orbital of the electron acceptor. This avoids that potential differences can form between the intermediate layer and the area of the electron acceptors, which can have a negative effect on the performance or the efficiency of the solar cell.
- Another advantageous embodiment of the present invention is characterized in that the conduction band of the interelayer conducting holes (L ⁇ CHER) is matched to the lowest unoccupied molecular orbital of the electron donor. This prevents potential differences from forming between the intermediate layer and the area of the electron donors, which can have a negative effect on the performance or the efficiency of the solar cell.
- L ⁇ CHER conduction band of the interelayer conducting holes
- the photovoltaic cell according to the invention is preferably an organic photovoltaic cell.
- FIG. 1 shows a sectional view through a solar cell according to an embodiment of the present invention.
- FIG. 1 shows a cross section through a solar cell according to the present invention.
- the solar cell is applied to a carrier material or a substrate 4.
- the substrate 4 can consist of glass, plastic, a crystal or a similar material.
- the substrate 4 is shown with a break line 6 to show that the thickness of the substrate 4 is irrelevant to the present invention and can vary.
- the substrate only serves to provide the solar cell with appropriate mechanical strength and possibly surface protection.
- the substrate is provided with an anti-reflective coating 2 (or coating) on the side facing the incidence of light in order to avoid losses due to reflection.
- the first layer 8 on the substrate represents an electrode 8 of the solar cell. It is essentially not important whether the electrode is a cathode or an anode.
- the first electrode 8 should therefore consist, for example, of Al, CU, ..., ITO (indium tin oxide) or the like. It should be noted that the electrode facing the incidence of light (here electrode 8) is preferably transparent or semitransparent and / or has a lattice structure. It is assumed for simplicity that the electrode 8 arranged on the substrate 4 is a cathode.
- the material and the dimensions of the first intermediate layer 10 can be selected so that they match the properties of the active layer or the electron acceptor. In the case of organic solar cells, this can be achieved by adapting the band gap to the highest occupied molecular orbital of the electron acceptor.
- the further properties of the intermediate layer 10, such as thickness and refractive index, can be selected such that the intermediate layer 10 acts as an anti-reflection layer between the electrode 8 and the layer that follows it.
- the intermediate layer 10 facing the incidence of light preferably the electrode 8 can have a lattice structure.
- the intermediate layer 10 is covered by the active layer itself.
- the composition of the active layer 12 is essentially not important for the present invention.
- Active layers usually have a region with electron donors 16 and a region with electron acceptors 14, both of which are mixed with one another, for example, via a depletion layer and / or are connected to one another.
- the charge carriers (electron-hole pairs) generated in the active layer by the incidence of light are suctioned off separately into the adjacent layers.
- the active layer can, for example, be composed of a classic amorphous semiconductor with a pn junction.
- the present invention can be used particularly advantageously in organic solar cells, for example with P3HT / PBCM, CuPc / PTCBI, ZNPC / C60, or a conjugated polymer component and a fullerene component.
- the side 14 of the active layer 12 facing the substrate is the electron acceptor 200307142
- a second intermediate layer 18 with a large band gap and asymmetrical conductivity is arranged above the active layer 12 on the side of the electron donors 16.
- the conductivity of the second intermediate layer 18 is based on the mobility of defect electrons. Due to the large band gap, the material is also essentially transparent or at least semi-transparent. Only defect electrons can move through this intermediate layer.
- the material and the dimensions of the second intermediate layer 18 can be selected so that they match the properties of the active layer or the properties of the electron donor. In organic solar cells, this can be achieved by adapting the band gap of the intermediate layer to the lowest vacant molecular orbital of the electron donor.
- the further properties of the intermediate layer 18, such as thickness and refractive index, can be selected such that the intermediate layer 18 forms an antireflection layer between the active layer 12 and the subsequent layer. This can be particularly advantageous with tandem or multi-cell photovoltals. 200307142
- the further properties of the intermediate layer 18, such as thickness and refractive index, can be chosen such that the intermediate layer 18 (together with a subsequent electrode) forms a reflection layer between the active layer 12 and the subsequent layer. This can be particularly advantageous in the case of individual photovoltaic cells, since light that has passed through the active layer can generate charge carrier pairs in the depletion layer again after the reflection.
- the intermediate layer facing away from the light does not necessarily have to be transparent or semi-transparent. This means that the band gap of the intermediate layer, which faces away from the light, does not necessarily have to be large.
- the intermediate layer facing the incidence of light (depending on the version 10 or 18), however, must be transparent or at least semi-transparent so that the incident light can reach the active layer. This means that the band gap of the intermediate layer that faces the incident light must be at least as large as the band gap of the material of the active layer that faces the incident light.
- the second intermediate layer 18 is followed by the electrode layer 20, which in the given example represents an anode.
- the electrode material of the anode can consist, for example, of Ag, Au, Al, CU, ... ITO or the like.
- the anode since the anode faces away from the light, it is not subject to any restrictions in terms of thickness, transparency or any other restrictions.
- the anode can also be covered by a protective layer (not shown). 200307142
- the wavy arrows 22 indicate the direction of the incidence of light
- the solar cell can also be built upside down on, for example, an opaque substrate 4, in which case the light can then come in from above.
- an “inverse” structure has the disadvantage that the structures and layers facing the incidence of light are exposed to environmental influences such as atmospheric oxygen, dust and the like, which can quickly damage or render the solar cell unusable.
- the anti-reflective coating 2 would have to be provided on the other side of the solar cell.
- the present invention can also be applied to conventional monocrystalline or polycrystalline solar cells.
- the intermediate layers 10, 18 would in turn be arranged between the electrodes and the active layer.
- the present invention makes it possible to increase the parallel resistance of solar cells and photodetectors. This can reduce the effect of the "photo shunt” and thereby increase the fill factor and thus the efficiency of the solar cell. This also increases the ideality of the diode.
- the present invention is based on the use of intermediate layers with a large band gap and asymmetrical mobility for the different charge carriers. Another advantage of the invention is that doping of the intermediate layers is not necessary and the difficulties in stabilizing doping in organic materials can thus be avoided. 200307142
- the intermediate layers can be deposited both from the gas phase and from a solution, which makes processing or the production of the intermediate layers cheaper.
- (semi-) transparent layers with a large band gap (band gap) and highly asymmetrical conductivity between the electrode and the photoactive semiconductor layer it should be noted that the layer with high electron mobility between the active layer and the negative electrode, and the Layer with high hole (defect) mobility between the active layer and the positive electrode is applied. It should also be noted that the conduction band of the layer with high electron mobility is matched to the highest occupied molecular orbital of the electron acceptor and that the valence band of the layer with high hole mobility is matched to the lowest unoccupied molecular orbital of the electron donor.
- the band gaps of the at least two intermediate layers can differ. It is also clear that constructions with a plurality of intermediate layers should also fall within the scope of the present claims, since such multilayer intermediate layers can also be regarded as a single “composite intermediate layer”. It is furthermore clear that the present invention naturally also applies to tandem When looking at the individual solar cell layers as well as the tandem solar cell as a whole, all possible combinations with at least one intermediate layer between a photoactive layer and an electrode as well as constructions with an intermediate layer between each photoactive layer and each fall Electrode under the scope of the present claims. 200307142
- the asymmetrical transport properties of the intermediate layers prevent the formation of continuous guideways for only one type of charge carrier. This increases the parallel resistance. At the same time, this reduces the probability that minority charge carriers reach the other electrode and thus losses due to recombination of charge carriers of opposite charge in the metal electrodes.
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE502004009141T DE502004009141D1 (de) | 2003-06-12 | 2004-05-26 | Organische solarzelle mit einer zwischenschicht mit asymmetrischen transporteigenschaften |
US10/559,009 US20060278890A1 (en) | 2003-06-12 | 2004-05-26 | Organic solar cell comprising an intermediate layer with asymmetrical transport properties |
CN2004800164010A CN1806349B (zh) | 2003-06-12 | 2004-05-26 | 包括具有非对称传导特性的中间层的有机太阳能电池 |
EP04734848.7A EP1631996B2 (de) | 2003-06-12 | 2004-05-26 | Organische solarzelle mit einer zwischenschicht mit asymmetrischen transporteigenschaften |
JP2006516122A JP2006527491A (ja) | 2003-06-12 | 2004-05-26 | 非対称的な輸送特性を備えた中間層を含む有機太陽電池 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10326546.5 | 2003-06-12 | ||
DE10326546A DE10326546A1 (de) | 2003-06-12 | 2003-06-12 | Organische Solarzelle mit einer Zwischenschicht mit asymmetrischen Transporteigenschaften |
Publications (1)
Publication Number | Publication Date |
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WO2004112162A1 true WO2004112162A1 (de) | 2004-12-23 |
Family
ID=33494993
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2004/050915 WO2004112162A1 (de) | 2003-06-12 | 2004-05-26 | Organische solarzelle mit einer zwischenschicht mit asymmetrischen transporteigenschaften |
Country Status (9)
Country | Link |
---|---|
US (2) | US20060278890A1 (de) |
EP (2) | EP2063472B1 (de) |
JP (1) | JP2006527491A (de) |
KR (2) | KR20110028664A (de) |
CN (1) | CN1806349B (de) |
AT (1) | ATE425559T1 (de) |
DE (2) | DE10326546A1 (de) |
ES (1) | ES2323372T3 (de) |
WO (1) | WO2004112162A1 (de) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2005109542A1 (en) * | 2004-05-11 | 2005-11-17 | Lg Chem. Ltd. | Organic electronic device |
JP2006278585A (ja) * | 2005-03-28 | 2006-10-12 | Dainippon Printing Co Ltd | 有機薄膜太陽電池素子 |
WO2007040601A1 (en) * | 2005-03-17 | 2007-04-12 | The Regents Of The University Of California | Architecture for high efficiency polymer photovoltaic cells using an optical spacer |
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US20160005795A1 (en) * | 2013-03-15 | 2016-01-07 | The Regents Of The University Of California | Organic tandem photovoltaic device and methods |
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- 2004-05-26 KR KR1020117004235A patent/KR20110028664A/ko not_active Application Discontinuation
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- 2004-05-26 WO PCT/EP2004/050915 patent/WO2004112162A1/de active Application Filing
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- 2004-05-26 DE DE502004009141T patent/DE502004009141D1/de active Active
- 2004-05-26 US US10/559,009 patent/US20060278890A1/en not_active Abandoned
- 2004-05-26 AT AT04734848T patent/ATE425559T1/de not_active IP Right Cessation
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Also Published As
Publication number | Publication date |
---|---|
CN1806349B (zh) | 2012-01-04 |
EP2063472A3 (de) | 2010-02-17 |
EP1631996A1 (de) | 2006-03-08 |
EP1631996B2 (de) | 2013-08-07 |
ES2323372T3 (es) | 2009-07-14 |
US20140230901A1 (en) | 2014-08-21 |
EP2063472B1 (de) | 2015-07-01 |
KR20060018884A (ko) | 2006-03-02 |
DE502004009141D1 (de) | 2009-04-23 |
EP1631996B1 (de) | 2009-03-11 |
KR20110028664A (ko) | 2011-03-21 |
EP2063472A2 (de) | 2009-05-27 |
US20060278890A1 (en) | 2006-12-14 |
ATE425559T1 (de) | 2009-03-15 |
CN1806349A (zh) | 2006-07-19 |
JP2006527491A (ja) | 2006-11-30 |
DE10326546A1 (de) | 2005-01-05 |
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