# US 2014/0196760 A1 · Solar cell and solar module

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- Number: US 2014/0196760 A1
- Document ID: US20140196760A1
- Status: Published application
- Kind: A1
- Application number: 14/210,498
- Filed: 2014-03-14
- Published: 2014-07-17
- Earliest claimed: 2011-09-15
- Assignees: Sanyo Electric Co., Ltd.
- Applicants: Sanyo Electric Co., Ltd.
- Inventors: Takahiro Mishima
- Web page: https://patentgrep.com/patent/US20140196760A1

## CPC

- H10F 19/90: Structures for connecting between photovoltaic cells, e.g. interconnections or insulating spacers (between thin-film photovoltaic cells on a single substrate H10F19/35)
- H10F 10/146: {Back-junction photovoltaic cells, e.g. having interdigitated base-emitter regions on the back side}
- Y02E 10/547: Monocrystalline silicon PV cells
- H10F: INORGANIC SEMICONDUCTOR DEVICES SENSITIVE TO INFRARED RADIATION, LIGHT, ELECTROMAGNETIC RADIATION OF SHORTER WAVELENGTH OR CORPUSCULAR RADIATION
- Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION

## Abstract

A solar cell and a solar module are provided which have improved output characteristics. A solar cell (20) has a photovoltaic conversion unit (23), a first electrode (21), and a second electrode (22). The first electrode (21) and the second electrode (22) are arranged on one main surface of the photovoltaic conversion unit (23). The first electrode (21) has first finger portions (21a) and a first busbar portion (21b). The first finger portions (21a) extend in one direction. The first finger portions (21a) are connected electrically to the first busbar portion (21b). The width (W11) of the first busbar portion (21b) is smaller than the width (W21) of each first finger portion.

## Claims

### Claim 1

A solar cell having a photovoltaic conversion unit, and a first electrode and a second electrode arranged on the same main surface of the photovoltaic conversion unit,
the first electrode having a plurality of finger portions extending in one direction, and a first busbar portion connected electrically to the plurality of first finger portions, and
the width of the first busbar portion being smaller than the width of first finger portion.

### Claim 2 (depends on 1)

The solar cell according to claim 1, wherein the width of the first busbar portion is no more than 0.95 times the width of first finger portion.

### Claim 3 (depends on 1)

The solar cell according to claim 1, wherein the first electrode is the electrode used to collect the majority carrier.

### Claim 4 (depends on 1)

The solar cell according to claim 1, wherein the first electrode includes a plated film.

### Claim 5 (depends on 1)

The solar cell according to claim 1, wherein the second electrode has a plurality of second finger portions extending in the one direction, and a second busbar portion connected electrically to the plurality of second finger portions,
the width of the second busbar portion being smaller than the width of second finger portion.

### Claim 6

A solar module comprising:
a plurality of solar cells each having a photovoltaic conversion unit, and a first electrode and a second electrode arranged on the same main surface of the photovoltaic conversion unit, and
a wiring member electrically connecting the plurality of solar cells;
the first electrode having a plurality of finger portions extending in one direction, and a first busbar portion connected electrically to the plurality of first finger portions, and
the width of the first busbar portion being smaller than the width of first finger portion.

### Claim 7 (depends on 6)

The solar module according to claim 6, wherein the wiring member is connected electrically to the first electrode in the first finger portions.