Solar cell and solar cell module

Patent metadata

Field	Value
Publication number	US-2016197210-A1
Application number	US-201615072903-A
Country	US
Kind code	A1
Filing date	Mar 17, 2016
Priority date	Sep 19, 2013
Publication date	Jul 7, 2016
Grant date	—

Abstract

A solar cell includes: a base substrate that has a principle surface; a first semiconductor layer provided in a first region on the principle surface; a second semiconductor layer provided in a second region on the principle surface; an n-side electrode provided on the first semiconductor layer; a p-side electrode provided on the second semiconductor layer; and grooves that separate the n-side electrode and the p-side electrode from each other. The respective widths of the grooves in a direction in which the n-side electrode and the p-side electrode are spaced apart are set to be wider in the outer peripheral region than in the inner region.

First claim

What is claimed is:

1 . A solar cell comprising:
a base substrate that has a principle surface; a first semiconductor layer that is provided in a first region on the principle surface; a second semiconductor layer that is provided in a second region, which is different from the first region, on the principle surface; an n-side electrode that is provided on the first semiconductor layer; a p-side electrode that is provided on the second semiconductor layer; and a groove that separates the n-side electrode and the p-side electrode from each other, wherein the principle surface has an outer peripheral region provided along the outer periphery of the principle surface and an inner region provided inside the outer peripheral region, and wherein the width of the groove in a direction in which the n-side electrode and the p-side electrode are spaced apart is set to be wider in the outer peripheral region than in the inner region.

2 . The solar cell according to claim 1 , further comprising:
an insulating layer provided between the first semiconductor layer and the second semiconductor layer, wherein the groove is arranged at a position where the insulating layer is provided, and wherein the width of the insulating layer in the direction is set to be wider in the outer peripheral region than in the inner region.

3 . The solar cell according to claim 1 ,
wherein the width of the groove in the direction is set to be wider toward the outer periphery of the principle surface.

4 . The solar cell according to claim 3 ,
wherein, while the width of the groove in the direction in the outer peripheral region is determined according to the distance from the outer periphery, the width in the direction in the inner region is determined regardless of the distance from the outer periphery.

5 . A solar cell module comprising:
a plurality of solar cells and a sealing layer that seals the solar cells, wherein the solar cells include: a base substrate that has a principle surface; a first semiconductor layer that is provided in a first region on the principle surface; a second semiconductor layer that is provided in a second region, which is different from the first region, on the principle surface; an n-side electrode that is provided on the first semiconductor layer; a p-side electrode that is provided on the second semiconductor layer; and a groove that separates the n-side electrode and the p-side electrode from each other, wherein the principle surface has an outer peripheral region provided along the outer periphery of the principle surface and an inner region provided inside the outer peripheral region, and wherein the width of the groove in a direction in which the n-side electrode and the p-side electrode are spaced apart is set to be wider in the outer peripheral region than in the inner region.

Assignees

• Panasonic Ip Man Co Ltd

Inventors

• Hayashi Naofumi
• Mishima Takahiro
• Takahama Tsuyoshi
• Yamaguchi Tsutomu

Classifications

• Y02E10/50

  Photovoltaic [PV] energy · CPC title

• H10F77/219

  Arrangements for electrodes of back-contact photovoltaic cells · CPC title

• H10F77/148

  Shapes of potential barriers · CPC title

• H10F19/908

  for back-contact photovoltaic cells · CPC title

• H10F19/80 Primary

  Encapsulations or containers for integrated devices, or assemblies of multiple devices, having photovoltaic cells · CPC title