EP2577739A2 - Module de cellules solaires et procédé de fabrication de celui-ci - Google Patents

Module de cellules solaires et procédé de fabrication de celui-ci

Info

Publication number
EP2577739A2
EP2577739A2 EP11782375.7A EP11782375A EP2577739A2 EP 2577739 A2 EP2577739 A2 EP 2577739A2 EP 11782375 A EP11782375 A EP 11782375A EP 2577739 A2 EP2577739 A2 EP 2577739A2
Authority
EP
European Patent Office
Prior art keywords
solar cell
protective layer
cell module
module according
glass carrier
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Withdrawn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
EP11782375.7A
Other languages
German (de)
English (en)
Inventor
Tobias Jarmar
Lars Stolt
Peter Neretnieks
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.)
Hanergy Holding Group Ltd
Original Assignee
Solibro GmbH
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 Solibro GmbH filed Critical Solibro GmbH
Publication of EP2577739A2 publication Critical patent/EP2577739A2/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • H01L31/18—Processes or apparatus specially adapted for the manufacture or treatment of these devices or of parts thereof
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
    • B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
    • B32B17/10—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
    • B32B17/10005—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing
    • B32B17/10009—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the number, the constitution or treatment of glass sheets
    • B32B17/10036—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the number, the constitution or treatment of glass sheets comprising two outer glass sheets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
    • B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
    • B32B17/10—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
    • B32B17/10005—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing
    • B32B17/10165—Functional features of the laminated safety glass or glazing
    • B32B17/10174—Coatings of a metallic or dielectric material on a constituent layer of glass or polymer
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C17/00—Surface treatment of glass, not in the form of fibres or filaments, by coating
    • C03C17/34—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions
    • C03C17/36—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions at least one coating being a metal
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C17/00—Surface treatment of glass, not in the form of fibres or filaments, by coating
    • C03C17/34—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions
    • C03C17/36—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions at least one coating being a metal
    • C03C17/3602—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions at least one coating being a metal the metal being present as a layer
    • C03C17/3649—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions at least one coating being a metal the metal being present as a layer made of metals other than silver
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C17/00—Surface treatment of glass, not in the form of fibres or filaments, by coating
    • C03C17/34—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions
    • C03C17/36—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions at least one coating being a metal
    • C03C17/3602—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions at least one coating being a metal the metal being present as a layer
    • C03C17/3668—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions at least one coating being a metal the metal being present as a layer the multilayer coating having electrical properties
    • C03C17/3678—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions at least one coating being a metal the metal being present as a layer the multilayer coating having electrical properties specially adapted for use in solar cells
    • 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
    • H01L31/042—PV modules or arrays of single PV cells
    • H01L31/0445—PV modules or arrays of single PV cells including thin film solar cells, e.g. single thin film a-Si, CIS or CdTe solar cells
    • H01L31/046—PV modules composed of a plurality of thin film solar cells deposited on the same substrate
    • 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
    • H01L31/042—PV modules or arrays of single PV cells
    • H01L31/048—Encapsulation of modules
    • 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
    • H01L31/042—PV modules or arrays of single PV cells
    • H01L31/048—Encapsulation of modules
    • H01L31/049—Protective back sheets
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
    • H02S20/00—Supporting structures for PV modules
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C2217/00—Coatings on glass
    • C03C2217/40—Coatings comprising at least one inhomogeneous layer
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C2218/00—Methods for coating glass
    • C03C2218/30—Aspects of methods for coating glass not covered above
    • C03C2218/365—Coating different sides of a glass substrate
    • 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

Definitions

  • the invention relates to a solar cell module with a glass carrier and arranged on a device side surface of the glass carrier
  • Such SolarzeUenmodule find more and more popularity due to their lower material costs compared to solar cells from semiconductor wafers.
  • the device side surface of the glass carrier is covered by solar cell structures, which are then connected by means of a
  • the solar cell structures generally comprise a metal layer, often formed of molybdenum, which is deposited directly on the glass substrate as a back electrode, followed by a semiconductor stack acting as a photovoltaic active structure, and finally by another conductive layer as a front electrode.
  • the front electrode is usually formed of a transparent conductive material to allow incident light to pass through. Glass usually acts as a good protective and sealing material for the solar cell structure.
  • the object is achieved according to the invention by a solar cell module having the features of claim 1 and by a manufacturing method for a solar cell having the features of claim 17.
  • Embodiments are subject of the dependent claims.
  • the invention is based on the discovery that the loss of efficiency of known solar cell modules is due to a degradation of the glass carrier.
  • a back side surface of the glass carrier opposite the device side surface becomes laterally conductive. A potential difference between this back surface and the
  • the return electrode of the solar cell on the device side surface causes an electric field to form across the glass carrier.
  • the electric field drives ions, especially sodium ions, to move through the glass carrier to the back electrode of the solar cell.
  • the ions react with the material of the back electrode, which leads to a degradation of its function.
  • the protective layer can help reduce ion flux by reducing or even preventing the build-up of the electric field across the glass substrate. This can be achieved either by the surface potential on the
  • the protective layer may be formed of a conductive material, such as metal, to act as an equipotential surface to which any voltage can be applied to counteract the electric field.
  • the protective layer may be formed so as to prevent lateral conductivity of the back surface even in humid and hot environments. This can be achieved by means of
  • the protective layer may be applied to the back surface of the glass substrate at any time during the manufacturing process, for example, before or after the deposition of the solar cell structure, or even between the process steps for the deposition of the solar cell structure.
  • the glass carrier with a pre-deposited protective layer on its backside surface can be delivered to the solar module manufacturing site.
  • the solar cell structure is monolithic on the device side surface of the glass carrier
  • the monolithic production of the solar cell structure on the glass carrier has the advantage that an intimate
  • the glass carrier There is a connection between the glass carrier and the solar cell structure.
  • the solar cell structure is deposited in layers on the glass substrate.
  • the opposite of monolithic deposition would be to make the solar cell structures separate from the glass slide and then place them on the glass slide.
  • the cover glass which is arranged on the monolithic structure of the solar cell on glass substrate for sealing the solar cells, not monolithic with the
  • the thin-film solar cells can be on amorphous silicon or other
  • CdTe cadmium telluride
  • CIS copper indium gallium selenium
  • DSC dye-sensitized
  • the glass carrier is a substrate of the solar cell structure. This means that the glass carrier is arranged on the rear side of the solar cell structure opposite to the right side of the fall.
  • the glass substrate may be a superstrate of the solar cell structure. In which case, the incident light must penetrate through the glass substrate in order to penetrate the glass substrate To achieve solar cell structure. In the latter case, the protective layer must be formed on a transparent material.
  • the solar cell structure of the solar cell module for protection against degradation comprises a metal layer in direct contact with the device side surface of the glass carrier.
  • the metal layer may in particular be formed from molybdenum.
  • a surface area on the back surface corresponding to an area covered by the solar cell structure is
  • Device side surface corresponds, substantially completely covered by the protective layer.
  • the expression “corresponds” means that the area of the device side surface covered by the photosensitive cell structure is projected on the back side to obtain the surface area covered by the protective layer.
  • at least the area on the back surface is directly adjacent to the solar cell structure of FIG the protective layer covered to prevent the build-up of an electric field immediately below the solar cell structure.
  • the protective layer substantially cover the entire back surface of the solar cell module
  • This embodiment has the additional advantage that the protective layer on the back surface does not need to be patterned and that the solar cell structure and the protective layer need not be aligned with each other.
  • the protective layer is made of a conductive material for
  • the protective layer can be formed, for example, from a metal or from a conductive oxide. Such a conductive
  • the protective layer makes it possible to have a predetermined or regulated potential
  • the protective layer is formed of a non-conductive material, as shown in the foregoing, to apply the back surface of the glass carrier to counteract the potential difference between the device side surface and the back surface.
  • the protective layer preferably has a sheet resistance of at least 10 12 ohms per square, more preferably at least 2 ⁇ 10 12 , 5 ⁇ 10 12 , or 10 13 ohms per square.
  • the protective layer comprises a layer of lacquer which is applied to the rear side surface of the glass carrier.
  • the protective layer may include one
  • Polyvinylbutylaldehyde based primer with an epoxy resin Such a material may be used alone or as a primer for paint.
  • the paint itself can be based on polyurethane, if necessary, with an addition of pigments.
  • the protective layer is amorphous, nanocrystalline, polycrystalline or monocrystalline.
  • nanocrystalline may also be termed monocrystalline, while the term monocrystalline may also be termed monocrystalline.
  • the protective layer comprises an oxide, a nitride and / or an oxynitride.
  • the protective layer may be a
  • the protective layer may either be deposited on the back surface or applied to it by suitable means, for example by a printing process.
  • the protective layer is of aluminum oxide, silicon oxide, silicon nitride, silicon oxine tride, aluminum oxynitride,
  • the protective layer is a moisture barrier.
  • a surface of the protective layer facing away from the glass carrier is hydrophobic.
  • the entire protective layer may be formed of a hydrophobic material, or the surface of the protective layer may be rendered hydrophobic by surface treatment. This embodiment is particularly useful for nonconductive protective layers because of
  • the protective layer may preferably have a layer thickness of more than 25 nm, preferably between 25 and 500 nm, although thicker layers may also be suitable.
  • the protective layer according to any of the embodiments described herein may be deposited by physical or chemical vapor deposition (PVD or CVD), which is plasma can be supportive (PECVD).
  • PVD or CVD physical or chemical vapor deposition
  • PECVD plasma can be supportive
  • Other deposition methods may also be useful, such as sputtering or epitaxy deposition methods,
  • Fig. 1 a glass carrier
  • FIG. 2 shows the glass carrier from FIG. 1, covered by a protective layer
  • FIG. 3 shows solar cell structures formed on the glass carrier
  • FIG. 4 shows a solar cell module with the solar cell structures which are arranged between the glass carrier and a cover glass.
  • FIGS. 1 to 4 illustrate different stages in the manufacture of a solar cell module according to a preferred embodiment.
  • a glass substrate 1 of a suitable size and thickness is first provided, comprising a device side surface 11 and a back surface 12.
  • the back surface 12 of the glass carrier 1 is substantially completely covered by a protective layer 3, which
  • the glass carrier 1 may already be provided with a protective layer 3 when it is supplied to the solar cell manufacturing site.
  • solar cell structures 2 are formed on the device side surface 3 of the glass substrate 1 comprising a number of layers deposited on the glass substrate 1.
  • Solar cell structure 2 made of thin film solar cells is suitable for this purpose. Finally, as shown in Fig. 4, a coverslip 4 is placed on the solar cell structures 2 to protect them while it is
  • the protective layer 3 is deposited on the back surface 12 of the glass substrate 1 before the solar cell structures 2 are fabricated, the process may be reversed instead, or the protective layer 3 may alternatively be deposited between the deposition steps of the solar cell structures 2.
  • the solar cell module can be sealed along the edges and arranged for support in a frame.

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Computer Hardware Design (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Power Engineering (AREA)
  • General Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Physics & Mathematics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • Organic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Manufacturing & Machinery (AREA)
  • Photovoltaic Devices (AREA)

Abstract

L'invention concerne un module de cellules solaires comportant un support en verre (1) et une structure de cellules solaires (2) disposée sur une face côté dispositif (11) du support en verre (1). Le module de cellules solaires est caractérisé en ce qu'il comporte une couche de protection (3) disposée sur une face côté arrière (12) du support en verre (1), opposée à la face côté dispositif (11). L'invention concerne également un procédé de fabrication du module de cellules solaires.
EP11782375.7A 2010-06-04 2011-05-27 Module de cellules solaires et procédé de fabrication de celui-ci Withdrawn EP2577739A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102010017246A DE102010017246A1 (de) 2010-06-04 2010-06-04 Solarzellenmodul und Herstellungsverfahren hierfür
PCT/DE2011/075121 WO2012022312A2 (fr) 2010-06-04 2011-05-27 Module de cellules solaires et procédé de fabrication de celui-ci

Publications (1)

Publication Number Publication Date
EP2577739A2 true EP2577739A2 (fr) 2013-04-10

Family

ID=44970903

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11782375.7A Withdrawn EP2577739A2 (fr) 2010-06-04 2011-05-27 Module de cellules solaires et procédé de fabrication de celui-ci

Country Status (7)

Country Link
US (1) US20130104965A1 (fr)
EP (1) EP2577739A2 (fr)
JP (1) JP2013527622A (fr)
CN (1) CN102959733A (fr)
AU (1) AU2011291158B2 (fr)
DE (1) DE102010017246A1 (fr)
WO (1) WO2012022312A2 (fr)

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WO2012022312A2 (fr) 2012-02-23
DE102010017246A1 (de) 2011-12-08
WO2012022312A3 (fr) 2012-08-09
AU2011291158A1 (en) 2013-01-10
JP2013527622A (ja) 2013-06-27
US20130104965A1 (en) 2013-05-02
CN102959733A (zh) 2013-03-06
AU2011291158B2 (en) 2014-04-10

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