WO1995022177A1 - Semiconductor fiber solar cells and modules - Google Patents
Semiconductor fiber solar cells and modules Download PDFInfo
- Publication number
- WO1995022177A1 WO1995022177A1 PCT/US1995/001909 US9501909W WO9522177A1 WO 1995022177 A1 WO1995022177 A1 WO 1995022177A1 US 9501909 W US9501909 W US 9501909W WO 9522177 A1 WO9522177 A1 WO 9522177A1
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- WIPO (PCT)
- Prior art keywords
- solar cell
- recited
- substrate
- semiconductive
- semiconductor
- Prior art date
Links
- 239000004065 semiconductor Substances 0.000 title claims abstract description 38
- 239000000835 fiber Substances 0.000 title abstract description 19
- 239000000463 material Substances 0.000 claims abstract description 23
- 239000000758 substrate Substances 0.000 claims description 29
- 238000001465 metallisation Methods 0.000 claims description 11
- 239000011248 coating agent Substances 0.000 claims description 10
- 238000000576 coating method Methods 0.000 claims description 10
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical group [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 claims description 6
- 229910052750 molybdenum Inorganic materials 0.000 claims description 6
- 239000011733 molybdenum Substances 0.000 claims description 6
- 229910052782 aluminium Inorganic materials 0.000 claims description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical group [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 4
- 230000007613 environmental effect Effects 0.000 claims description 2
- 239000002019 doping agent Substances 0.000 claims 4
- 230000001681 protective effect Effects 0.000 claims 3
- 230000003667 anti-reflective effect Effects 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 239000013307 optical fiber Substances 0.000 abstract 2
- 238000000034 method Methods 0.000 description 10
- 238000000151 deposition Methods 0.000 description 8
- 230000008021 deposition Effects 0.000 description 8
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 6
- 239000011521 glass Substances 0.000 description 4
- 239000004033 plastic Substances 0.000 description 4
- 229920003023 plastic Polymers 0.000 description 4
- 238000007740 vapor deposition Methods 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 230000003287 optical effect Effects 0.000 description 3
- 239000004020 conductor Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 238000003491 array Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 238000005137 deposition process Methods 0.000 description 1
- 238000009713 electroplating Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000005350 fused silica glass Substances 0.000 description 1
- 229910052736 halogen Inorganic materials 0.000 description 1
- 150000002367 halogens Chemical class 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 229910021421 monocrystalline silicon Inorganic materials 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 239000006223 plastic coating Substances 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000005361 soda-lime glass Substances 0.000 description 1
- HUAUNKAZQWMVFY-UHFFFAOYSA-M sodium;oxocalcium;hydroxide Chemical compound [OH-].[Na+].[Ca]=O HUAUNKAZQWMVFY-UHFFFAOYSA-M 0.000 description 1
- 238000004544 sputter deposition Methods 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
Classifications
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- 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
- H01L31/06—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 characterised by at least one potential-jump barrier or surface barrier
- H01L31/072—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 characterised by at least one potential-jump barrier or surface barrier the potential barriers being only of the PN heterojunction type
- H01L31/0749—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 characterised by at least one potential-jump barrier or surface barrier the potential barriers being only of the PN heterojunction type including a AIBIIICVI compound, e.g. CdS/CulnSe2 [CIS] heterojunction solar cells
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- 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
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- 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
- H01L31/02—Details
- H01L31/02002—Arrangements for conducting electric current to or from the device in operations
- H01L31/02005—Arrangements for conducting electric current to or from the device in operations for device characterised by at least one potential jump barrier or surface barrier
- H01L31/02008—Arrangements for conducting electric current to or from the device in operations for device characterised by at least one potential jump barrier or surface barrier for solar cells or solar cell modules
- H01L31/0201—Arrangements for conducting electric current to or from the device in operations for device characterised by at least one potential jump barrier or surface barrier for solar cells or solar cell modules comprising specially adapted module bus-bar structures
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- 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
- H01L31/02—Details
- H01L31/0224—Electrodes
- H01L31/022408—Electrodes for devices characterised by at least one potential jump barrier or surface barrier
- H01L31/022425—Electrodes for devices characterised by at least one potential jump barrier or surface barrier for solar cells
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- 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
- H01L31/0248—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 characterised by their semiconductor bodies
- H01L31/0352—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 characterised by their semiconductor bodies characterised by their shape or by the shapes, relative sizes or disposition of the semiconductor regions
- H01L31/035272—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 characterised by their semiconductor bodies characterised by their shape or by the shapes, relative sizes or disposition of the semiconductor regions characterised by at least one potential jump barrier or surface barrier
- H01L31/035281—Shape of the body
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- 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
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- 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
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- 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
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- 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
- H01L31/05—Electrical interconnection means between PV cells inside the PV module, e.g. series connection of PV cells
- H01L31/0504—Electrical interconnection means between PV cells inside the PV module, e.g. series connection of PV cells specially adapted for series or parallel connection of solar cells in a module
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- 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
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/52—PV systems with concentrators
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/541—CuInSe2 material PV cells
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Definitions
- the present invention relates generally to solar cells, and more particularly to thin film solar cells constructed of semiconductor material formed substantially about a fiber and incorporated into a module.
- U.S. Patent 3,984,256 invented by Fletcher et al. , discloses forming a cell array constructed of silicon fibers, each being doped to produce an inner region of one polarity type and an outer region of an opposite polarity type to form a continuous radial semiconductor junction. These fibers are arranged in both parallel and serial arrangements. The fiber is made of semiconductor material used as the base of the solar cell.
- Re. 29,833 discloses a tubular structure and is directed to providing conductive paths between interconnected fibers or tubes. Further examples of such tube-like structures are disclosed in U.S. Patents 3,134,906, 3,687,633 and 3,591,348.
- U.S. Patent 3,990,914, invented by Weinstein et al. discloses forming a photovoltaic cell disposed on the inner and outer surfaces of a glass tube.
- the cell is formed of Cu 2 S and CdS which provides a heterojunction.
- the semiconductor material is disposed around the circumference of the glass tube.
- U.S. Patent 4,056,404 invented by Garone et al , discloses a method and structure for providing an oval solar cell.
- U.S. Patent 4, 152,536, invented by Ravi discloses forming a monocrystalline silicon ribbon according to the process disclosed in U.S. Patent 3,591,348.
- the ribbon is formed by a hollow tube along the length of the tube. This provides a slightly curved photovoltaic cell.
- U.S. Patent 4, 143,234, invented by Johnson et al. discloses a monocrystalline element formed as a half cylindrical junction. A collector is formed atop the arcuate cell.
- U.S. Patent 5,240,510 invented by Goldade et al. , discloses a planar cell provided with a hemispherical portion for directing radiant energy to the cell.
- U.S. Patent 4,913,744 invented by Hoegl et al. , discloses forming a layered cylindrical photovoltaic cell arrangement.
- the cell is formed by layering multiple cylindrical cells disposed on a planar substrate.
- a generic semiconductor solar cell and module comprising: a substrate coated with at least two semiconductive layers, the substrate having at least two conductive connections; a first conductive connection between the first semiconductive layer and the substrate; and a second conductive connection disposed on the second semiconductive layer.
- the semiconductive layers are selectively disposed about the substrate.
- Figure 1 is a cross section of the substrate fiber constructed in accordance with a preferred embodiment of the invention.
- Figure 2 is a cross section of the substrate with a coating of molybdenum
- Figure 3 is a cross section of the substrate with a coating of semiconductive material on the molybdenum layer
- Figure 4 is a cross section of the substrate with a coating of a second semiconductive material on the first semiconductor material layer;
- Figure 5 is a cross section of a semiconductor solar cell which is constructed in accordance with a preferred embodiment of the invention;
- Figure 6 is a cross section of the semiconductor solar cell embedded into an acrylic material forming a lens and support system
- Figure 7 is a cross section of the cell and lens with a metallization layer forming a module which is constructed in accordance with a preferred embodiment of the invention
- Figure 8 is a schematic of a circuit having diodes which are connected in series
- Figure 9 is a cross section of the semiconductor solar cell with selectively removed metalization areas to provide an equivalent circuit as shown in Figure 8;
- Figure 10 is a schematic of a circuit having diodes connected in parallel
- Figure 11 is a cross section of the semiconductor solar cell with selectively removed metalization areas to provide an equivalent circuit as shown in Figure 10;
- Figure 12 is a perspective view of the module and frame assembly
- Figure 13 is a cross section of the solar cell module showing notched areas and an edge bus strip
- Figure 14 is a block diagram showing the steps in the cell formation process
- Figure 15 is a block diagram showing the steps in the module formation process
- Figure 16 is side view of a vapor deposition system
- Figure 17 is a diagrammatic view illustrating the steps in the process of manufacturing the solar cell and module.
- Substrate 10 is made of glass.
- the types of glass may include fused quartz, borosilicate or soda-lime.
- the substrate 10 is sputter coated with a conductive layer such as molybdenum 20. It should be appreciated, however, that any well known method of coating substrate 10 may be utilized.
- a first coating of semiconductor material 30 is then applied onto the molybdenum 20, shown in Figure 3.
- the material 30 is applied to cover a portion of the substrate 10.
- a second coating of semiconductor material 40 is then applied onto first semiconductor material 30, as shown in Figure 4.
- Semiconductor materials 30 and 40 are oppositely doped. That is one is N type and the other is P type. Though, as is known, one could as easily be P+ + and the other N— . Further, CIGS and CdS may be used.
- Figure 5 shows a second conductive layer of material 50, e.g. ZnO, applied onto layer 40.
- Layers 20 and 50 provide electrical contact to the semiconductor junction formed by layers 30 and 40.
- This construction forms a basic cell 100.
- cells 100 are formed on a spool and heat pressed into an acrylic lens superstrate 200, as shown in Figure 6.
- Acrylic lens superstrate 200 is used to focus light to a high degree.
- Manufacture of the superstrate 200 may be carried out in a number of ways, including, injection molding stamping, extrusion, or any other method known in the fabricating art.
- FIG. 7 a plurality of cells 100 affixed to superstrate 200 and having a metallization coating 300 applied thereto are illustrated. Coating 300 is selectively removed to provide either serial or parallel connections between cells.
- Figure 8 is a schematic of an equivalent diode model of the serial module 610 illustrated in Figure 9. As may be seen in Figure 9, module 610 has a selectively removed metallization layer 300 and substrate side supports 220. The remaining interconnections labeled A, B, C and D provide connections between cells 100 and bus strips 310 and 320. Bus strips 310 and 320 and metallization layer 300 may be metals such as Al, Cu, Ni, or any other conducting material and are applied by known techniques such as evaporating, sputtering, or electroplating. A plastic coating 400 is shown in Figure 13 as covering the interconnections A, B, C and D. This layer is provided for environmental protection.
- Figure 10 is a schematic of an equivalent diode model of a parallel module 620 illustrated in Figure 11.
- FIG. 13 shows a portion of a module 600.
- module 600 is the generic representation of either module 610 or 620.
- Acrylic superstrate 200 may have notches to save plastics.
- Concentrated light beams 601 impinge on a section of cell 100.
- the geometry between acrylic superstrate 200 and cell 100 is important so as to allow the maximum amount of radiant energy to focus at the focal line for each cell, i.e. , superstrate 200 is a focusing lens.
- light beams 601 are focused to each cell 100.
- acrylic has been chosen, any optical material with proper optical characteristics may be used.
- Module 600 is fitted with an aluminum frame 650, as shown in Figure 12. This provides structural integrity to large sized modules.
- aluminum is the preferred metal, a number of other likely materials may be used such as alloys or other metals or plastics.
- substrate 10 measures 500 ⁇ m in diameter and is preferably formed of soda lime glass.
- the depositions of molybdenum 20, CIGS 30, CdS 40 and ZnO 50 are applied selectively while fiber 10 is spooled. If coevaporating widths of 15 cm are used in a rotating system, shown in Figure 17, a 40 cm diameter spool would hold 300 wraps or one 375 m fiber cell. This constitutes approximately one module 600.
- Superstrate 200 dimensions were calculated as .45 cm from top of superstrate 200 to the focal point within the cell 100. This provides a concentration ratio of 12:1.
- the lens shape was generated using software based on Snell's law and reflectance loss data compiled from OPTIC AD analysis. Total plastic volume is approximately 4600 cm 3 resulting in a 4.5 kgm module weight. Center to center fiber separation is 0.4 cm and there are one hundred and fifty parallel cell fibers. One hundred parallel cell fibers are needed to yield a 60 cm width.
- Each cell 100 operates at 750 mv and the module generates an operating voltage of approximately 112 V. The power and current will be 144W and 1.28 A, respectively.
- Module 600 has an over-all dimension of 60cm x 240 cm.
- the superstrate optical power transmission is approximately between 78% and 91 % .
- the fiber cell module costs approximately 50% less to manufacture than a similarly constructed monolithic cell module.
- each cell 100 has an efficiency approaching 10%.
- substrate 10 is drawn and coated with a first layer of conductive material. This step is illustrated by blocks 301 and 302. This coated fiber is then spooled into spool 500.
- Spool 500 is inserted into a vapor deposition chamber 700 with a bell jar 800 and monitoring system 760.
- a robotic arm 900 see Figure 17, is used to move spool 500 from one vapor deposition chamber to the next.
- the monitor 760 is used to check the stoichiometry of each coating.
- a halogen spool heater 550 At the center of spool 500 is a halogen spool heater 550.
- Deposition chamber 700 may consist of a single source or multiple sources 710, 720, 730 and 740.
- the multiple sources may be Cu 710, In 720, Ga 730 and Se 740.
- a deposition chamber 700 for each material being deposited. These chambers are illustrated as 700', 700" and 700'" in Figure 17.
- spool 500 is rotated to allow for selective deposition. Spool 500 is placed into a vapor deposition chamber for selenization. Deposition continues with a first semiconductor material 30 and second semiconductor material 40. These depositions are performed within separate chambers.
- the final step in constructing cell 100 is to deposit ZnO by means of a deposition process.
- the deposition steps are illustrated in Figure 14 as blocks 303 through 305.
- spool 500 is cut into or striped and fiber cell strip sections 100 are heat pressed into the superstrate 200.
- This step is illustrated in Figure 17 element 410 and in Figure 15 as block 411.
- Cells 100 are rotated about their centers relative to superstrate 200, to provide access to both front and back contact layers 50 and 20.
- Superstrate 200 has formed within, bus strips 310 and 320. Further, superstrate 200 is formed with side supports 220.
- a metallization process 420 is used to coat the back of cell 100 and module 600. This step is illustrated by block 421 of Figure 15.
- Metallization layer 300 is then selectively removed by means of burnishing or scoring, see block 430.
- Module 600 is then encapsulated with plastic, see block 440.
- Electrical posts are connected to the bus strips 310 and 320, see block 450.
- aluminum supports 650 are added to gain structural integrity and mounting points, as shown in Figure 12. This step is illustrated as block 460.
- the end product is then combined with other modules 600 to form arrays, see block 470.
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CA002183440A CA2183440C (en) | 1994-02-15 | 1995-02-15 | Semiconductor fiber solar cells and modules |
AU18441/95A AU704057B2 (en) | 1994-02-15 | 1995-02-15 | Semiconductor fiber solar cells and modules |
EP95910264A EP0745276A4 (en) | 1994-02-15 | 1995-02-15 | Semiconductor fiber solar cells and modules |
MXPA/A/1996/003422A MXPA96003422A (en) | 1994-02-15 | 1996-08-15 | Cells and solar modules of fiber semiconduct |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US08/196,382 US5437736A (en) | 1994-02-15 | 1994-02-15 | Semiconductor fiber solar cells and modules |
US08/196,392 | 1994-02-15 |
Publications (1)
Publication Number | Publication Date |
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WO1995022177A1 true WO1995022177A1 (en) | 1995-08-17 |
Family
ID=22725176
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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PCT/US1995/001909 WO1995022177A1 (en) | 1994-02-15 | 1995-02-15 | Semiconductor fiber solar cells and modules |
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Country | Link |
---|---|
US (1) | US5437736A (en) |
EP (1) | EP0745276A4 (en) |
KR (1) | KR100426420B1 (en) |
AU (1) | AU704057B2 (en) |
CA (1) | CA2183440C (en) |
WO (1) | WO1995022177A1 (en) |
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Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1033762A2 (en) * | 1999-03-04 | 2000-09-06 | Manfred Dr. Baumgärtner | Solar collector made of fibres |
EP1033762A3 (en) * | 1999-03-04 | 2002-02-06 | Manfred Dr. Baumgärtner | Solar collector made of fibres |
GB2440366A (en) * | 2006-07-22 | 2008-01-30 | Spencer William Jansen | Solar cell formed on an optical fibre |
GB2440366B (en) * | 2006-07-22 | 2008-11-26 | Spencer William Jansen | Solar cells |
WO2015036809A1 (en) | 2013-09-13 | 2015-03-19 | Holger Behrendt | Solar energy recovering leads |
Also Published As
Publication number | Publication date |
---|---|
EP0745276A4 (en) | 1998-05-13 |
US5437736A (en) | 1995-08-01 |
CA2183440C (en) | 2004-06-22 |
KR100426420B1 (en) | 2004-07-19 |
CA2183440A1 (en) | 1995-08-17 |
MX9603422A (en) | 1997-12-31 |
AU1844195A (en) | 1995-08-29 |
KR970701433A (en) | 1997-03-17 |
AU704057B2 (en) | 1999-04-15 |
EP0745276A1 (en) | 1996-12-04 |
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