WO2013092259A2 - Diffuseur optique et procédé de fabrication d'un diffuseur optique - Google Patents

Diffuseur optique et procédé de fabrication d'un diffuseur optique Download PDF

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Publication number
WO2013092259A2
WO2013092259A2 PCT/EP2012/074861 EP2012074861W WO2013092259A2 WO 2013092259 A2 WO2013092259 A2 WO 2013092259A2 EP 2012074861 W EP2012074861 W EP 2012074861W WO 2013092259 A2 WO2013092259 A2 WO 2013092259A2
Authority
WO
WIPO (PCT)
Prior art keywords
solar cell
diffuser
modification
layer
optical diffuser
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.)
Ceased
Application number
PCT/EP2012/074861
Other languages
German (de)
English (en)
Other versions
WO2013092259A3 (fr
Inventor
Ortwin Siepmann
Chakanga Kabulakwao
Karsten Von Maydell
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.)
Ewe-Forschungszentrum fur Energietechnologie Ev
EWE FORSCHUNGSZENTRUM fur ENERGIETECHNOLOGIE EV
Original Assignee
Ewe-Forschungszentrum fur Energietechnologie Ev
EWE FORSCHUNGSZENTRUM fur ENERGIETECHNOLOGIE EV
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 Ewe-Forschungszentrum fur Energietechnologie Ev, EWE FORSCHUNGSZENTRUM fur ENERGIETECHNOLOGIE EV filed Critical Ewe-Forschungszentrum fur Energietechnologie Ev
Publication of WO2013092259A2 publication Critical patent/WO2013092259A2/fr
Publication of WO2013092259A3 publication Critical patent/WO2013092259A3/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/02—Diffusing elements; Afocal elements
    • G02B5/0268—Diffusing elements; Afocal elements characterized by the fabrication or manufacturing method
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/02—Diffusing elements; Afocal elements
    • G02B5/0205—Diffusing elements; Afocal elements characterised by the diffusing properties
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10F—INORGANIC SEMICONDUCTOR DEVICES SENSITIVE TO INFRARED RADIATION, LIGHT, ELECTROMAGNETIC RADIATION OF SHORTER WAVELENGTH OR CORPUSCULAR RADIATION
    • H10F77/00—Constructional details of devices covered by this subclass
    • H10F77/40—Optical elements or arrangements
    • H10F77/413—Optical elements or arrangements directly associated or integrated with the devices, e.g. back reflectors
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10F—INORGANIC SEMICONDUCTOR DEVICES SENSITIVE TO INFRARED RADIATION, LIGHT, ELECTROMAGNETIC RADIATION OF SHORTER WAVELENGTH OR CORPUSCULAR RADIATION
    • H10F77/00—Constructional details of devices covered by this subclass
    • H10F77/40—Optical elements or arrangements
    • H10F77/42—Optical elements or arrangements directly associated or integrated with photovoltaic cells, e.g. light-reflecting means or light-concentrating means
    • H10F77/484—Refractive light-concentrating means, e.g. lenses
    • 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 optical diffuser according to the invention is preferably formed by means of the method according to the invention or an advantageous embodiment thereof.
  • the method according to the invention is preferably designed for producing the optical diffuser according to the invention or a preferred embodiment thereof.
  • the optical diffuser according to the invention is suitable for use with a photovoltaic solar cell or a solar cell module and comprises a diffusor layer.
  • the diffuser layer has a plurality of alternately arranged optically collecting and optically scattering modification regions.
  • the lateral distance between two adjacent modification regions is in the range 1 pm to 200 pm.
  • the optical diffuser according to the invention thus comprises a diffuser layer having a plurality of modification regions which on the one hand serve as optically collecting regions, i. with the optical effect of a positive lens and, on the other hand, as optically diffusing regions, i. are formed with the optical effect of a diverging lens.
  • the optical diffuser according to the invention furthermore differs from previously known approaches in which periodic structures with period lengths in the wavelength range of the incident light are formed in order to achieve wave-optical or quantum-optical effects.
  • the modification regions of the optical diffuser according to the invention have a lateral spacing between two adjacent regions in the range of 1 ⁇ m to 200 ⁇ m, so that in particular a less complex production is possible.
  • the multiplicity of laterally spaced modification regions is preferably formed within the diffuser layer.
  • the plurality of optically collecting and optically scattering modification regions is preferably formed by a locally inhomogeneous refractive index in the diffuser layer. According to the findings of the inventor, this preferred embodiment has the advantage that a formation of the optically collecting and optically scattering regions in a simple and cost-effective form can be achieved by a local variation of the refractive index in the diffuser layer:
  • the modification regions may have different shapes.
  • the modification regions of the optical diffuser have approximately cylindrical or spherical shapes.
  • the center of a modification region is defined as the center of a sphere enclosing the modification region or of a cylinder enveloping the modification region.
  • the abovementioned preferred embodiments with regard to the lateral spacing between the centers of the modification regions in each case favor the diffusion effect in the spectral range relevant for solar cells, in particular in the range from 300 nm to 2500 nm.
  • the diffuser layer is preferably made of at least one of the materials
  • the optical diffuser according to the invention can be produced over a large area at low cost and is therefore particularly suitable for use in the manufacture of a solar cell module.
  • the object according to the invention is thus likewise achieved by a solar cell module, which solar cell module comprises a plurality of laterally juxtaposed photovoltaic solar cells comprises which solar cells are electrically connected to each other, preferably in a conventional manner, for example by forming a plurality of strings, which are connected in series.
  • the solar cell module has an optical diffuser according to the invention or, preferably, embodiments thereof, which optical diffuser covers the plurality of solar cells.
  • the optical diffuser is preferably arranged on the side of the solar cells facing the incident light. In this way, an increase in efficiency is achieved at the module level by using the diffuser to achieve a longer light path of the incident light in the solar cells.
  • modification ranges can be used in principle to known per se, for example, on the in Siebenmorgen, production of waveguides by femtosecond laser structuring in Nd and Yb-doped YAG crystals, thesis 2010, University of Hamburg described.
  • the glass was in each case subjected to 15 consecutive laser pulses, so that 15 superimposed modification regions were formed.
  • FIG. 1 shows, an essential, advantageous effect forms:
  • FIGS. 2 and 3 The representations of the thin-film solar cells in FIGS. 2 and 3 are schematic and highly abstracted. Partial sections are shown, ie in FIGS. 2 and 3 the surface of the solar cell facing the light incidence is perpendicular to the plane of the drawing.
  • the structural design of the solar cell in particular contacting and arrangement of the PN junction, are These solar cells are formed in a conventional manner, such as in Thin-Film Solar Ceils, Y. Hamakawa, Springer-Verlag Berlin Heidelberg New York 2004, ISBN 3-540-43945-5, in particular on pages 106ff. and Figures 6. 1 and 6.2 described.
  • the efficiency of the solar cell changes because, due to the oblique coupling of the incident light by means of the diffuser layer 1, the light path in the amorphous silicon layer 4 and thus the light absorption increases.
  • FIG. 3 shows a second exemplary embodiment of a photovoltaic solar cell, which is fundamentally analogous to the solar cell shown in FIG. 2 and likewise has a TCO layer 3, an amorphous silicon layer 4 and a metallic contacting layer 5,

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Photovoltaic Devices (AREA)

Abstract

L'invention concerne un diffuseur optique pour des cellules solaires photovoltaïques ou des modules de cellules solaires comprenant une couche de diffusion. L'essentiel est que la couche de diffusion présente une pluralité de zones de modification optiquement collectrices et optiquement dispersives qui sont disposées en alternance, chaque zone de modification optiquement collectrice présentant une distance de l'ordre de 1 µm à 200 µm par rapport à une zone optiquement dispersive voisine. L'invention concerne également un procédé de fabrication d'un diffuseur optique.
PCT/EP2012/074861 2011-12-20 2012-12-07 Diffuseur optique et procédé de fabrication d'un diffuseur optique Ceased WO2013092259A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102011089245.1 2011-12-20
DE102011089245A DE102011089245B3 (de) 2011-12-20 2011-12-20 Optischer Diffusor und Verfahren zur Herstellung eines optischen Diffusors

Publications (2)

Publication Number Publication Date
WO2013092259A2 true WO2013092259A2 (fr) 2013-06-27
WO2013092259A3 WO2013092259A3 (fr) 2013-10-03

Family

ID=47469913

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2012/074861 Ceased WO2013092259A2 (fr) 2011-12-20 2012-12-07 Diffuseur optique et procédé de fabrication d'un diffuseur optique

Country Status (2)

Country Link
DE (1) DE102011089245B3 (fr)
WO (1) WO2013092259A2 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20220190649A1 (en) * 2019-03-20 2022-06-16 Wi-Charge Ltd. Photovoltaic cell for laser beam power detection

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102014201034A1 (de) * 2013-10-17 2015-04-23 POG-Präzisionsoptik Gera GmbH Gewerbepark Optisches Bauelement mit transparentem Grundkörper und einer passiv lichtstreuenden Struktur
AT16668U1 (de) * 2015-10-15 2020-04-15 Zumtobel Lighting Gmbh Verfahren zur Herstellung einer Streuoptik sowie Streuoptik und Leuchte mit Streuoptik

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4063896B2 (ja) * 1995-06-20 2008-03-19 株式会社半導体エネルギー研究所 有色シースルー光起電力装置
JP4634129B2 (ja) * 2004-12-10 2011-02-16 三菱重工業株式会社 光散乱膜，及びそれを用いる光デバイス
DE102008060599A1 (de) * 2008-12-06 2010-06-10 Rainer Merdonig Solarzelleneinheit
TWM370095U (en) * 2009-06-30 2009-12-01 Acpa Energy Conversion Devices Co Ltd Wave length modulating apparatus for light source
DE102009053768A1 (de) * 2009-11-18 2011-05-19 Daimler Ag Kraftwagenbauteil und Verfahren zu dessen Herstellung
DE102010003222A1 (de) * 2010-03-24 2011-11-17 Uwe Peter Braun Optisches System

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
Y. HAMAKAWA: "Thin-Film Solar Cells", 2004, SPRINGER-VERLAG BERLIN HEIDELBERG NEW YORK, pages: 106

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20220190649A1 (en) * 2019-03-20 2022-06-16 Wi-Charge Ltd. Photovoltaic cell for laser beam power detection
US11909224B2 (en) * 2019-03-20 2024-02-20 Wi-Charge Ltd. Photovoltaic cell for laser beam power detection
US12451734B2 (en) 2019-03-20 2025-10-21 Wi-Charge Ltd. Photovoltaic cell for laser beam power detection

Also Published As

Publication number Publication date
WO2013092259A3 (fr) 2013-10-03
DE102011089245B3 (de) 2013-06-06

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