EP2162684A2 - Dispositif photovoltaïque avec structure holographique pour la déviation de rayonnement solaire entrant, et son procédé de fabrication - Google Patents

Dispositif photovoltaïque avec structure holographique pour la déviation de rayonnement solaire entrant, et son procédé de fabrication

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Publication number
EP2162684A2
EP2162684A2 EP07856105A EP07856105A EP2162684A2 EP 2162684 A2 EP2162684 A2 EP 2162684A2 EP 07856105 A EP07856105 A EP 07856105A EP 07856105 A EP07856105 A EP 07856105A EP 2162684 A2 EP2162684 A2 EP 2162684A2
Authority
EP
European Patent Office
Prior art keywords
radiation
solar cell
hologram
wave
solar
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.)
Withdrawn
Application number
EP07856105A
Other languages
German (de)
English (en)
Inventor
Erich W. Merkle
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SOLARTEC AG
Original Assignee
SOLARTEC AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by SOLARTEC AG filed Critical SOLARTEC AG
Publication of EP2162684A2 publication Critical patent/EP2162684A2/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/32—Holograms used as optical elements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S23/00—Arrangements for concentrating solar-rays for solar heat collectors
    • F24S23/30—Arrangements for concentrating solar-rays for solar heat collectors with lenses
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/10—Beam splitting or combining systems
    • G02B27/1006—Beam splitting or combining systems for splitting or combining different wavelengths
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/10—Beam splitting or combining systems
    • G02B27/1086—Beam splitting or combining systems operating by diffraction only
    • 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
    • H01L31/054—Optical elements directly associated or integrated with the PV cell, e.g. light-reflecting means or light-concentrating means
    • H01L31/0543—Optical elements directly associated or integrated with the PV cell, e.g. light-reflecting means or light-concentrating means comprising light concentrating means of the refractive type, e.g. lenses
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03H—HOLOGRAPHIC PROCESSES OR APPARATUS
    • G03H1/00—Holographic processes or apparatus using light, infrared or ultraviolet waves for obtaining holograms or for obtaining an image from them; Details peculiar thereto
    • G03H1/22—Processes or apparatus for obtaining an optical image from holograms
    • G03H1/2249—Holobject properties
    • G03H2001/2263—Multicoloured holobject
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03H—HOLOGRAPHIC PROCESSES OR APPARATUS
    • G03H1/00—Holographic processes or apparatus using light, infrared or ultraviolet waves for obtaining holograms or for obtaining an image from them; Details peculiar thereto
    • G03H1/26—Processes or apparatus specially adapted to produce multiple sub- holograms or to obtain images from them, e.g. multicolour technique
    • G03H2001/2605—Arrangement of the sub-holograms, e.g. partial overlapping
    • G03H2001/261—Arrangement of the sub-holograms, e.g. partial overlapping in optical contact
    • G03H2001/2615—Arrangement of the sub-holograms, e.g. partial overlapping in optical contact in physical contact, i.e. layered holograms
    • 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
    • Y02E10/40—Solar thermal energy, e.g. solar towers
    • 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

Definitions

  • the invention relates to a photovoltaic device according to the preamble of the appended claim 1, as known from DE 10 2004 031 784 A1.
  • the invention relates to a PV concentrator module for direct conversion of light into electrical energy, in which the incident solar radiation is deflected by means of a hologram structure, wherein a portion of the incident solar radiation is concentrated on a solar cell.
  • the invention relates to a manufacturing method for such a device.
  • a higher efficiency with e.g. Over 30% conversion of solar radiation has in recent years been associated with high power PV cells from higher value semiconductor interconnects (e.g., Ill-V semiconductor material), e.g. GalliumArsenide (GaAs) has been achieved.
  • semiconductor interconnects e.g., Ill-V semiconductor material
  • GaAs GalliumArsenide
  • Such semiconductor-based cells can be built up step by step as tandem or triple or multi-layer cells, thereby exploiting a wider light-frequency spectrum.
  • Micro solar cells made of semiconductor material with a size of less than a few hundred square millimeters are known from DE 103 20 663 A1.
  • the micro-solar cells are applied inside a transparent housing constructed of a plurality of glass panes on the inside of a lower glass pane. Since the efficiency of the micro-solar cell decreases with increasing temperature, the micro-solar cells are each surrounded by a heat sink.
  • the mounting method of all micro-solar cells in a housing leads, despite existing heat sinks around the micro-solar cells to problems in the necessary heat dissipation to the outside and to contamination of the module insides including the sensitive solar cells.
  • the incident sunlight is focused in PV concentrator modules by means of converging lenses on the existing solar cells. Due to aberrations such as aberrations. Color errors, when inserting converging lenses, do not focus the incident light on one point, but in the best case on a line. Consequently, only a portion of the incident light in a particular spectral range can be focused on a given solar cell.
  • the convertible solar radiation has wave frequencies v whose photon energy hv exceeds the energy gap of the solar cells used
  • the part of the incident solar radiation, which is not converted by the solar cells into electricity, is rather long-wave and makes itself felt as heat. This part of the incident radiation is called long-wave radiation in the following.
  • DE 10 2004 031 784 A1 discloses a holographic, preferably arc-shaped, deflecting device, wherein hologram structures, which preferably have diffraction gratings, have different spectral diffraction efficiencies and divert the usable incident solar radiation for different positions of the sun onto a light receiving element.
  • the deflection device has a plurality of hologram layers, each hologram deflecting incident radiation in a given spectral range and at a certain angle of incidence equally to the light-receiving element and transmitting light in another spectral range or angle of incidence.
  • the deflection device is suitable for converting or concentrating diffuse incident light into parallel light.
  • the light receiving element may be a solar cell or a solar absorber.
  • sol-gel processes there are a variety of hydrolysis and
  • Photosensitive gel films are each coated on a silicon dioxide substrate and then exposed to UV light through a mask and then leached in alcohol. Finally, gratings with a period of 2 ⁇ m and a depth of 80 nm are obtained. The absorbency of such GeI films is shifted to the shorter wavelengths below 300 nm. The optical and morphological properties of the grating are examined with FTIR, AFM, SEM, etc. Such diffraction gratings have been found to be acceptable in the manufacture of micro-optic elements such as optical communications holograms and optoelectronics.
  • the invention has for its object to provide a photovoltaic device according to the preamble of the appended claim 1, which has the advantages of PV concentrator technology uses such a way that a high efficiency of the solar cells over a longer time is obtained.
  • it is necessary to build a PV concentrator module so that this can be produced in series with little effort and a high efficiency of the solar cell is obtained over a longer time.
  • the invention proposes a photovoltaic device with the features mentioned in claim 1.
  • Advantageous embodiments can be found in the dependent claims.
  • An advantageous manufacturing method for this is the subject of the independent claim.
  • the photovoltaic device With the photovoltaic device according to the invention, a high efficiency of the solar cells over a long time by avoiding color aberrations and stabilization of the working temperature of the solar cell in a range in which the solar cells can work efficiently obtained.
  • holographic element having a holographic structure
  • focusing the usable light incident at a certain angle onto a smaller-area solar cell opposite the holographic element, which is preferably a micro-solar cell made of semiconductor material, which has a multilayer structure can.
  • Several solar cells can each be applied under or on a transparent light emission body or carrier.
  • a light entrance body has a plurality of holographic elements, each comprising at least one planar hologram layer having a maximum diffraction efficiency in a short-wavelength region of the incident solar radiation and a plurality of hologram structure regions of different holographic nature.
  • the radiation incident at a certain angle can be deflected differently in a given spectral range and at the same point be focused.
  • Other hologram layers can be similarly constructed and superimposed on one another for further spectral ranges.
  • the short-wave solar radiation incident at a certain angle can be focused on the same point in its entire usable spectral range by means of a planar hologram structure, which can thus be easily realized.
  • a possible spectral decomposition of the incident usable solar radiation in a direction perpendicular to a solar cell direction can be canceled.
  • the area of the solar cells used can be reduced and their efficiency can be increased.
  • the reduction in the necessary area of the solar cells brings about a reduction in the cost of the solar cells, which are very high, particularly in the case of multilayer solar cells made of semiconductor material.
  • the at least one holographic element on a side facing the sun on second hologram structure in particular in the form of one or more uppermost holographic layers, which deflects the long-wave incident radiation at an obtuse angle (> 90 °), in particular reflected, and the usable short-wave Light through.
  • an increase in the working temperature of the solar cell (s) can be avoided and be achieved by the fact that the solar cell (s) longer working efficiently (working).
  • a plurality of solar cells are on the back of a carrier body applied in the form of a transparent light exit body. So you just get to the solar cells for contacting and heat dissipation zoom.
  • a planar heat conductor, absorber body for solar thermal purposes or without problems three-dimensional heat dissipation devices, as in electronic
  • High performance devices are known, for example, rib structures.
  • the at least one holographic element on the side facing the sun having at least one preferably arranged at the top hologram, Deutschenlast the short-wave radiation and long-wave radiation from the surface of the solar cell and deflects long-wave target areas of a heat conductor plate or an absorber body , These long-wave target areas are each below the space between two adjacent solar cells and the area of none of the solar cells overlap.
  • Heat dissipation device flows, use thermally.
  • a heat plate is connected to the sun-facing side of the carrier, the incident heat radiation and heat generated during operation of the solar cells can be efficiently transported to the outside environment.
  • the heat conductor plate serves as a heat sink for the solar cells.
  • the absorber body may have a selective absorber, which also converts short-wave solar radiation into heat radiation.
  • the hologram structures of one, several or all of the holographic elements may each have further regions-referred to below as passages-which respectively transmit the short-wave and long-wave incident radiation.
  • the passbands adjoin the hologram regions respectively focusing the short-wavelength radiation on the opposite solar cell and positioned above the space between two adjacent solar cells so as not to overlap the surface of the solar cells.
  • a larger proportion of the incident radiation can be converted into heat by the absorber body without heat radiation being radiated back from the selective absorber or absorber body to the solar cells or into their immediate surroundings.
  • diffraction gratings are used as hologram layers.
  • the hologram structure is so easy to implement.
  • grating structures are used which are produced in a gel film produced in the sol-gel process. So it is possible to redirect incoming solar radiation very accurately.
  • the working temperature can be set to control the solar cells more easily.
  • the efficiency of solar cells decreases with each increase in temperature. The less heat radiation strikes the solar cells, the lower the likelihood that the solar cells will be heated, and consequently, these can then be used more efficiently for longer.
  • the holographic elements By forming the holographic elements from a plurality of planar superimposed hologram layers with a maximum diffraction efficiency in the usable range of incident radiation and several areas with different holographic properties, the short-wave incident radiation at a certain angle can be deflected differently and in a given spectral range Point - in particular a point-shaped short-wave target area on each solar cell - focus.
  • a possible spectral decomposition which occurs in the case of the PV concentrator modules commonly used Fresnel lenses, can be avoided.
  • the active area of the solar cells is reduced, which, given the solar cell area, results in greater photoraduction tracking tolerance of photovoltaic devices employing such holographic elements. This will be a
  • Plane holographic structures are also technically simpler and can be realized with less material input than curved structures.
  • Such flat holographic elements are light and space-saving and allow their reduced weight easier tracking to the sun.
  • a support body load the heat generated during operation of the solar cells or the incident long-wave radiation easier to handle, for. B. by means of a heat conductor plate, which is connected to the side facing away from the sun of the carrier and can be used as a heat sink for the solar cells.
  • a heat conductor plate which can also be supplemented or replaced by an absorber body for solar thermal purposes, a heat dissipation device be connected to exploit the incident long-wave radiation and heat generated during operation of the solar cell. The resulting heat is then fed by means of a heat transfer medium for thermal utilization.
  • each of the short-wave radiation through and additionally or alternatively to a return line or
  • Fig. 1 is a perspective view of a photovoltaic device in
  • Fig. 2 is a sectional view through a photovoltaic device of FIG
  • top hologram layer deflecting long wavelength radiation at an obtuse angle
  • Fig. 3 is a sectional view through a photovoltaic device of FIG.
  • Fig. 4 is a sectional view through a photovoltaic device of FIG.
  • top hologram layer having different regions which either redirect or transmit long wavelength radiation at an obtuse angle, heat conductor plate and heat dissipation device
  • Fig. 5 is a sectional view through a photovoltaic device of FIG.
  • Fig. 6 is a sectional view through a photovoltaic device of FIG.
  • topmost hologram layer having various regions which either redirect or transmit longwave radiation, heat conduction plate and heat dissipation device
  • Fig. 7 is a sectional view through a photovoltaic device of FIG.
  • topmost hologram layer having different regions that either redirect or transmit longwave radiation, other hologram layers having regions that transmit longwave and shortwave radiation, absorber body and heat dissipation device;
  • FIG. 1 shows a photovoltaic device 10 in the form of a PV concentrator module with a plurality of individual photovoltaic devices 11 in the form of concentrator units, each with at least one solar cell 5 in the form of a microsolar cell.
  • the solar cells 5 of the photovoltaic devices 11 are held by a light-emitting body in the form of a transparent carrier 50, which is arranged at a certain distance from a light inlet body 1.
  • holographic elements 3 each having a first hologram structure 30 and a second hologram structure, are used here on the light entry body 1.
  • the first hologram structure is formed of a plurality of planar hologram layers 34, 36.
  • To form the second hologram structure there is at least one upper hologram layer 32 which receives incident longwave radiation 25 (radiation with a Photon energy below the energy gap of the photovoltaically active materials used in the micro solar cell 5) deflects at an obtuse angle and the remaining, in particular short-wave radiation 20 passes.
  • the hologram layers 34, 36 of the first hologram structure 30 focus incident shortwave radiation 20 (radiation convertible into current in the microsolar cell) to the opposing solar cell 5.
  • incident shortwave radiation 20 radiation convertible into current in the microsolar cell
  • hologram structure regions 40, 42 of different hologram nature in the same planar hologram layer 34, 36 which deflect the vertically incident shortwave radiation differently in a given spectral range and transmit radiation in a different spectral range, a strong focusing of radiation in a given spectral range can be achieved. If a plurality of such hologram layers 34, 36 overlap, incident shortwave radiation 20 of different spectral regions can be focused on the same point.
  • the efficiency of the solar cells can be increased because with such a first hologram structure 30, the color error usually occurring in lens systems is avoided.
  • the second hologram structure having the upper hologram layers 32, which in the first embodiment redirects or redirects the incident long-wavelength light 25 as shown in Figs. 1 and 2 at an obtuse angle between incident and deflected beams.
  • the solar cells 5 can be mounted under the transparent support 50, which also serves as a common carrier and on its side facing away from the sun conductors (not shown) for contacting the solar cell 5 has.
  • a (eg, adhesive) transparent insulating layer 60 may be applied.
  • This mounting method of the solar cells 5 is special advantageous because the solar cells between the side facing away from the sun of the support body 50 and the insulating layer 60 are better protected against environmental influences.
  • a heat conductor layer 70 is mounted on this and on the underside of the solar cells 5.
  • the thermal conductivity of the heat conductor layer 70 can be changed directly by the use of particularly conductive material and / or different thickness of the material directly or even later by the additional application of conductive material layers. Due to the presence of the heat conductor plate 70, the heat generated during operation of the solar cells 5 can be better transported from the solar cells to the environment.
  • a third embodiment shown in FIG. 4 has holographic elements 3, each with a second hologram structure in the form of at least one top hologram layer 32 positioned on the side facing the sun, with juxtaposed different hologram structure regions 301, 302 with different hologram properties ,
  • the long-wave incident radiation is deflected back or deflected at an obtuse angle by a first hologram structure region 301 of the second hologram structure positioned above a solar cell 5 in each case.
  • a heat dissipation device having a piping system 80 for a heat transfer medium.
  • long-wavelength radiation from the first hologram structure regions 301 located above the solar cell 5 can be obtained. be redirected back to the outside environment.
  • long-wavelength radiation is transmitted by the adjacent second hologram structure regions 302 and impinges on the heat conductor plate 70.
  • incident heat radiation and heat generated during operation of the solar cells can be dissipated to the standing in contact with the heat conductor plate 70 heat dissipation device and heat a heat transfer medium flowing through the piping 80.
  • the heated heat transfer medium can then be used for thermal utilization.
  • both incident long-wave radiation 25 which makes itself felt as heat radiation, as well as during operation of the solar cell 5 resulting heat from the environment of the solar cell 5 transported away to avoid an increase in the operating temperature of the solar cell 5.
  • a fourth embodiment shown in FIG. 5 has an absorber body 75 instead of the heat conductor layer 70 for solar thermal purposes.
  • the superimposed hologram layers 34, 36 for deflecting shortwave radiation 20 may have passbands 46 each positioned above the space between two adjacent solar cells 5 so as not to overlap the surface of the solar cells 5 and transmitting the shortwave incident radiation.
  • incident short-wave radiation 20 is absorbed by the absorber body 75.
  • the absorber body 75 has a glass plate (if possible from solar glass) on a side of an absorber facing the sun. The incident through the glass plate solar radiation impinges on the absorber. This short-wave, high-energy radiation is converted into thermal radiation.
  • the released heat must not be lost, which is why the absorber body should be thermally insulated on all sides. Heat that is not directly absorbed by the absorber or emitted by it as an emission is reflected back through the glass. It is thus trapped in the absorber body 75.
  • the absorber should absorb direct and diffused radiation as well as possible and into heat convert (absorption). At the same time, it should emit as little heat as possible in the form of radiation (emission). He should behave selectively.
  • the heated absorber transfers the heat to the flowing in the fixedly connected to the absorber body 75 piping 80
  • Heat transfer fluid This transports the collected heat energy to a consumer or a heat storage.
  • a fifth embodiment shown in FIG. 6 has a second hologram structure in the form of an upper hologram layer 32, which has different hologram structure regions 311, 302 with different hologram properties.
  • the long-wave incident radiation 25 is irradiated by a third hologram structure region 311 of the uppermost hologram layer 32 positioned above a solar cell 5 on long-wave target regions 702 of FIG.
  • Redirected heat conductor plate which are not directly under the solar cell 5 and the solar cell areas 711 of the heat plate 70, which are each located directly below a solar cell 5, adjacent.
  • the long-wavelength incident radiation 25 is transmitted by a second hologram structure region 302 of the topmost hologram layer 32 adjoining the region 311, which is located over the interspace of two adjacent solar cells 5, and impinges on the long-wave target regions 702 of the heat conductor layer 70.
  • a heat dissipation device (not shown) having a piping system 80 may abut the heat conduction plate 70.
  • a sixth embodiment shown in FIG. 7 has an absorber body 75 for solar thermal purposes, which has a selective absorber.
  • the superimposed hologram layers 34, 36 for deflecting short-wave radiation 20 Have transmission regions 46 which are positioned over the space between adjacent solar cells 5, the solar cells 5 do not overlap and let through short-wave incident radiation 20.
  • incident short-wave radiation 20 can be converted by the absorber body 75 into thermal radiation and fed to a thermal utilization.
  • Deflection angle 46 passage area in the first hologram structure serving for deflecting short-wave radiation, which passage area transmits the short-wave radiation 50 transparent carrier (light exit body) 60 insulating layer 70 heat conductor plate 75 absorber body 80 piping system 301 First hologram structure area of the top hologram layer (s) for Redirecting longwave radiation at an obtuse angle, which is positioned immediately above a solar cell. 302 Second hologram structure area of the uppermost one Hologram layer (s), each of which is not directly above a solar cell and transmits long-wave radiation Immediately above a solar cell positioned area of the top
  • Hologram layer (s) for redirecting long-wave radiation into a region which is in each case immediately below the space between two adjacent solar cells.
  • Area of the heat conductor plate or the absorber body immediately under the solar cell (long-wave target area)
  • Area of the heat conductor plate or of the absorber body under the space between adjacent solar cells solar cell area

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Chemical & Material Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Sustainable Energy (AREA)
  • Thermal Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Sustainable Development (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • Electromagnetism (AREA)
  • Computer Hardware Design (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Power Engineering (AREA)
  • Photovoltaic Devices (AREA)
  • Diffracting Gratings Or Hologram Optical Elements (AREA)

Abstract

L'invention concerne un dispositif photovoltaïque (10) pour la conversion directe de l'énergie solaire en énergie électrique avec un corps d'entrée de lumière (1) avec une pluralité d'éléments holographiques (3) qui comportent chacun une structure d'hologramme (30) avec plusieurs couches d'hologramme empilées (32, 34) avec différentes sensibilités spectrales qui concentrent un rayonnement solaire à ondes courtes entrant à un angle défini respectivement sur la même zone d'une cellule solaire (5) à faible surface par rapport à la surface d'entrée de la lumière d'un élément holographique (3) correspondant et située à l'opposé. Chaque élément holographique (3) comporte au moins une couche d'hologramme supérieure (32) qui laisse passer les rayonnements entrants à ondes courtes et qui dévie les rayonnements à ondes longues entrants d'un angle obtus ou qui détourne de la cellule solaire (5) opposée dans une zone disponible entre la cellule solaire (5) opposée et une cellule solaire (5) voisine sur le côté des cellules solaires (5) opposé à la lumière.
EP07856105A 2006-12-15 2007-12-13 Dispositif photovoltaïque avec structure holographique pour la déviation de rayonnement solaire entrant, et son procédé de fabrication Withdrawn EP2162684A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102006059417A DE102006059417A1 (de) 2006-12-15 2006-12-15 Photovoltaik-Vorrichtung mit holografischer Struktur zum Umlenken einfallender Sonnenstrahlung, sowie Herstellverfahren hierfür
PCT/DE2007/002255 WO2008071180A2 (fr) 2006-12-15 2007-12-13 Dispositif photovoltaïque avec structure holographique pour la déviation de rayonnement solaire entrant, et son procédé de fabrication

Publications (1)

Publication Number Publication Date
EP2162684A2 true EP2162684A2 (fr) 2010-03-17

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EP07856105A Withdrawn EP2162684A2 (fr) 2006-12-15 2007-12-13 Dispositif photovoltaïque avec structure holographique pour la déviation de rayonnement solaire entrant, et son procédé de fabrication

Country Status (3)

Country Link
EP (1) EP2162684A2 (fr)
DE (1) DE102006059417A1 (fr)
WO (1) WO2008071180A2 (fr)

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