Solar cell arrangement

• US 4,913,744 A
• Filed: 01/12/1988
• Issued: 04/03/1990
• Est. Priority Date: 01/13/1987
• Status: Expired due to Term

• Current Assignee: Helmut Hoegl, Ralf M. Kern
• Original Assignee: Helmut Hoegl, Ralf M. Kern
• Inventors: Kern, Ralf M., Hoegl, Helmut
• Primary Examiner(s): Weisstuch, Aaron
• Application Number:
  US07/142,964
• Time in Patent Office: 812 Days
• Field of Search: 136/244, 136/249 TJ:255, 136/256, 136/263
• US Class Current: 136/244
• CPC Class Codes: H01L 31/022425 for solar cells
• CPC Class Codes: H01L 31/035272 characterised by at least one potential jump barrier or surface barrier
• CPC Class Codes: H01L 31/035281 Shape of the body
• CPC Class Codes: H01L 31/042 PV modules or arrays of single PV cells supporting structures for PV modules H02S20/00
• CPC Class Codes: H10K 30/00 Organic devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation integrated devices or assemblies of multiple devices H10K39/00, H10K65/00; electrolytic light-sensitive devices H01G9/20
• CPC Class Codes: H10K 30/53 in the form of fibres or tubes, e.g. photovoltaic fibres
• CPC Class Codes: H10K 39/10 Organic photovoltaic [PV] modules; Arrays of single organic PV cells
• CPC Class Codes: Y02E 10/549 Organic PV cells

Abstract

In a solar cell arrangement comprising a plurality of solar cell elements having a photovoltaic layer around an elongate center electrode, each solar cell element as a whole forms an individual separate voltage cell with a counterelectrode. The construction may comprise different photovoltaically operative inorganic and organic materials and may assume various configurations. An electrode assembly for such a cell arrangement provides that center electrodes in wire or thread form which are disposed in parallel juxtaposed or superposed relationship are electrically connected together by way of photoactive layers encasing same. The solar cell arrangement may be produced by a continuous process of passing center electrode material through a plurality of working stations to provide the finished construction with photoactive layer structure thereon.

Claims

1. A solar cell arrangement including a plurality of solar cell elements, wherein each solar cell element comprises:

an elongate base electrode; and

a photovoltaic layer of n-type or p-type disposed about said elongate electrode,

said elements being arranged within said solar cell arrangement such that elements having a p-type photovoltaic layer are so positioned with respect to elements having an n-type photovoltaic layer that the base electrode of each element functions as the counterelectrode of the adjacent elements.

2. An arrangement as set forth in claim 1 wherein each base electrode carries an additional photovoltaic layer such that each electrode carries contacting n-type and p-type layers.

3. An arrangement as set forth in claim 2 wherein a plurality of said solar cell elements are arranged in a plane in mutually parallel juxtaposed relationship.

4. An arrangement according to claim 2 wherein a plurality of said solar cell elements are arranged in more than one layer and in superposed relationship and in electrical contact at their peripheries.

5. An arrangement as set forth in claim 4 wherein the elongate center electrodes are arranged in laterally mutually offset relationship.

6. An arrangement as set forth in claim 4 wherein said solar cell elements are of differing diameters.

7. An arrangement as set forth in claim 4 wherein said elements in each layer are sensitive to a different portion of the sun'"'"'s radiation spectrum.

8. An arrangement as set forth in claim 2 wherein the individual solar cell elements are of a thread-like configuration.

9. An arrangement as set forth in claim 8 wherein said individual solar cell elements have a convex surface on the light incident side.

10. An arrangement as set forth in claim 2 wherein the individual solar cell elements are connected together in a woven structure.

11. An arrangement as set forth in claim 10 wherein the solar cell elements are connected together to provide a woven structure and wherein the solar cell elements forming the weft threads of the woven structure have outer photovoltaically operative layers opposite from those of the warp threads, said threads being in electrically conductive contact at the points of intersection of the solar cell elements in the woven structure, and wherein the elongate base electrodes of the weft threads and the elongate base electrodes of the warp threads are the opposite poles of the elements making up the said woven structure.

12. An arrangement as set forth in claim 11 wherein said woven structure is at least partially light-transmissive.

13. An arrangement as set forth in claim 2 wherein the individual solar cell elements are connected together in a non-woven structure.

14. An arrangement as set forth in claim 13 wherein the base electrodes of certain of said elements are connected to a first conductor and wherein the base electrodes of certain of said other elements are connected to a second conductor.

15. An arrangement as set forth in claim 2 wherein said base electrode occupies the predominant portion of the cross-sectional area of the element in comparison with the photovoltaic layer enclosing same.

16. An arrangement as set forth in claim 2 wherein said photovltaic layer comprises a flexible organic material.

17. An arrangement as set forth in claim 16 wherein said photovoltaic layer comprises a plurality of layers of different plastic compounds.

18. An arrangement as set forth in claim 2 wherein said photovoltaic layer comprises a plurality of different photovoltaic layer portions combined from photoactive organic and inorganic substances.

19. An arrangement as set forth in claim 2 wherein the photovoltaic layer includes color sensitizing means.

20. An arrangement as set forth in claim 2 including activator means for the sensitization of photoactive substances.

21. An arrangement as set forth in claim 2 wherein the individual solar cell elements are embedded in a layer of conductive material.

22. An arrangement as set forth in claim 2 wherein a respective intrinsic undoped i-layer is provided between each individual element.

23. An arrangement as set forth in claim 2 wherein said photovoltaic layers are shaped in the form of a triangle.