SOLAR CELL AND SOLAR CELL MODULE

• US 20090050190A1
• Filed: 08/21/2008
• Published: 02/26/2009
• Est. Priority Date: 08/24/2007
• Status: Abandoned Application

• Current Assignee: Sanyo Electric Company Limited (Panasonic Holdings Corporation)
• Original Assignee: Sanyo Electric Company Limited (Panasonic Holdings Corporation)
• Inventors: NISHIDA, Toyozo, Ninomiya, Kunimoto
• Application Number:
  US12/195,601
• Publication Number:
  US 20090050190A1
• Time in Patent Office: Days
• US Class Current: 136/244
• CPC Class Codes: H01L 31/022433 Particular geometry of the grid contacts
• CPC Class Codes: H01L 31/0516 specially adapted for interconnection of back-contact solar cells
• CPC Class Codes: Y02E 10/50 Photovoltaic [PV] energy

Abstract

Solar cells each include: an insulator connected to a back surface of a photoelectric conversion part; a first through-hole electrode penetrating the insulator, and electrically connected to a first collector electrode; and a second through-hole electrode penetrating the insulator, and electrically connected to a second collector electrode. In addition, a wiring member is disposed on the insulator.

Claims

1. A solar cell module comprising:

a first solar cell; and

a second solar cell electrically connected to the first solar cell with a wiring member, wherein

the first solar cell and the second solar cell are arranged in arrangement direction,

the first solar cell and the second solar cell each include;

a photoelectric conversion part including a light-receiving surface and a back surface provided on a reverse side of the light-receiving surface, and configured to generate electrons and holes by receiving light;

a first collector electrode formed on the photoelectric conversion part, and configured to collect the electrons;

a second collector electrode formed on the photoelectric conversion part, and configured to collect the holes;

an insulator connected to the back surface of the photoelectric conversion part;

a first through-hole electrode penetrating the insulator, and electrically connected to the first collector electrode; and

a second through-hole electrode penetrating the insulator, and electrically connected to the second collector electrode, and

on the insulator, the wiring member is electrically connected to the first through-hole electrode included in the first solar cell and the second through-hole electrode included in the second solar cell.

2. The solar cell module according to claim 1, wherein

the first collector electrode is formed on the light-receiving surface of the photoelectric conversion part,

the second collector electrode is formed on the back surface of the photoelectric conversion part, and

the first through-hole electrode penetrates the photoelectric conversion part.

3. The solar cell module according to claim 1, wherein

the photoelectric conversion part includes:

an n-type region provided in the back surface; and

a p-type region provided in the back-surface,

the first collector electrode is disposed on the n-type region, and

the second collector electrode is disposed on the p-type region.

4. The solar cell module according to any one of claims 1 to 3, wherein the first through-hole electrode included in the first solar cell and the second through-hole electrode included in the second solar cell are linearly arranged in the arrangement direction, in a plan view from the back-surface side.

5. The solar cell module according to claim 1, wherein the insulator included in any one of the first solar cell and the second solar cell is formed of a resin material containing a plurality of particles.

6. The solar cell module according to claim 1, wherein surface processing is applied to the insulator included in any one of the first solar cell and the second solar cell, the surface processing for enabling the insulator to diffuse light.

7. The solar cell module according to claim 1, wherein the insulator included in the first solar cell and the insulator included in the second solar cell are integrally formed in a flat plate shape.

8. The solar cell module according to claim 1, wherein

the wiring member includes;

a first wiring member arranged in the arrangement direction, and connected to the first through-hole electrode included in the first solar cell; and

a second wiring member arranged in the arrangement direction, and connected to the second through-hole electrode included in the second solar cell,

the first solar cell includes a third wiring member arranged on the insulator in orthogonal direction substantially orthogonal to the arrangement direction, and

the first wiring member and the second wiring member are each electrically connected to the third wiring member.

9. The solar cell module according to claim 8, wherein

in a plan view from the back-surface side,

the first through-hole electrode included in the first solar cell and the second through-hole included in the second solar cell are disposed on a line intersecting the arrangement direction.

10. The solar cell module according to any one of claims 8 and 9, wherein

the first solar cell includes a third collector electrode electrically connected to the second collector electrode, and

the third collector electrode is formed in the orthogonal direction on the back surface of the photoelectric conversion part.

11. A solar cell comprising:

a photoelectric conversion part including a light-receiving surface and a back surface provided on a reverse side of the light-receiving surface, and configured to generate electrons and holes by receiving light;

a first collector electrode formed on the photoelectric conversion part, and configured to collect the electrons;

a second collector electrode formed on the photoelectric conversion part, and configured to collect the holes;

an insulator connected to the back surface of the photoelectric conversion part;

a first through-hole electrode penetrating the insulator, and electrically connected to the first collector electrode; and

a second through-hole electrode penetrating the insulator, and electrically connected to the second collector electrode.