# US 2013/0154047 A1 · Photoelectric conversion device and method for fabricating the photoelectric conversion device

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- Number: US 2013/0154047 A1
- Document ID: US20130154047A1
- Status: Published application
- Kind: A1
- Application number: 13/770,707
- Filed: 2013-02-19
- Published: 2013-06-20
- Earliest claimed: 2010-08-20
- Assignees: Sanyo Electric Co., Ltd.
- Inventors: Toshio YAGIURA; Satoru OGASAHARA; Kazushi ISHIKI; Ryoji NAITO
- Web page: https://patentgrep.com/patent/US20130154047A1

## CPC

- H10F 77/00: Constructional details of devices covered by this subclass (constructional details of integrated devices, or assemblies of multiple devices, comprising at least one element in which radiation controls the flow of current H10F39/00)
- H10F 19/31: having multiple laterally adjacent thin-film photovoltaic cells deposited on the same substrate
- H10F 19/902: {for series or parallel connection of photovoltaic cells}
- H10F 77/937: {Busbar structures for modules}
- Y02E 10/50: Photovoltaic [PV] energy
- 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 photoelectric conversion device includes a substrate, a plurality of photoelectric conversion cells formed on the main surface of the substrate, a current-collecting wiring formed on the plurality of photoelectric conversion cells, an output wiring connected to the current-collecting wiring, and a back-side protective member bonded to the plurality of photoelectric conversion cells via a sealing member in a manner such that the plurality of photoelectric conversion cells formed on the main surface of the substrate are interposed between the substrate and the back-side protective member via the sealing member. The current-collecting wiring and the output wiring are positioned such that the current-collecting wiring and the output wiring do not overlap with each other above the main surface of the substrate.

## Claims

### Claim 1

A photoelectric conversion device including:
a substrate;
a plurality of photoelectric conversion cells formed on a main surface of the substrate;
a current-collecting wiring formed on the plurality of photoelectric conversion cells;
an output wiring connected to the current-collecting wiring; and
a back-side protective member bonded to the plurality of photoelectric conversion cells via a sealing member in a manner such that the plurality of photoelectric conversion cells are interposed between the substrate and the back-side protective member via the sealing member,
wherein the current-collecting wiring and the output wiring are positioned and connected such that the current-collecting wiring and the output wiring do not overlap with each other above the main surface of the substrate, and
wherein at least one of the current-collecting wiring and the output wiring has asperities on a joint surface between the current-collecting wiring and the output wiring.

### Claim 2 (depends on 1)

A photoelectric conversion device according to claim 1, wherein the current-collecting wiring is such that the current-collecting wiring has a first connecting component, which is recessed from an edge of the current-collecting wiring facing a center of the substrate, in a part of the current-collecting wiring with which the output wiring is connected,
wherein the output wiring has a second connecting component corresponding to the first connecting component, and
wherein the first connecting component and the second connecting component are placed such that the first connecting component and the second connecting component are in mesh with each other.

### Claim 3 (depends on 1)

A photoelectric conversion device according to claim 1, wherein the current-collecting wiring is formed of a plurality of members and is configured such that the output wiring is placed among the plurality of members constituting current-collecting wiring and such that the output wiring is electrically connected to the current-collecting wiring.

### Claim 4 (depends on 1)

A photoelectric conversion device according to claim 1, wherein surfaces of the output wiring and the current-collecting wiring are covered with a solder, and
wherein the output wiring and the current-collecting wiring are connected via the solder.

### Claim 5

A method for fabricating a photoelectric conversion device, the method including:
forming a plurality of photoelectric conversion cells on a main surface of a substrate;
forming a current-collecting wiring for collecting currents generated by the plurality of photoelectric conversion cells;
forming an output wiring for outputting power generated by the current-collecting wiring to the outside; and
bonding a back-side protective member to the plurality of photoelectric conversion cells via sealing member in a manner such that the plurality of photoelectric conversion cells are interposed between the substrate and the back-side protective member via the sealing member,
wherein the current-collecting wiring and the output wiring are positioned and connected such that the current-collecting wiring and the output wiring do not overlap with each other above the main surface of the substrate, and
wherein at least one of the current-collecting wiring and the output wiring has asperities on a joint surface between the current-collecting wiring and the output wiring.

### Claim 6 (depends on 5)

A method, for fabricating a photoelectric conversion device, according to claim 5, wherein the current-collecting wiring is such that the current-collecting wiring has a first connecting component, which is recessed from an edge of the current-collecting wiring facing a center of the substrate, in a part of the current-collecting wiring with which the output wiring is connected,
wherein the output wiring has a second connecting component corresponding to the first connecting component, and
wherein the first connecting component and the second connecting component are placed and connected to each other such that the first connecting component and the second connecting component are in mesh with each other.

### Claim 7 (depends on 5)

A method, for fabricating a photoelectric conversion device, according to claim 5, wherein the current-collecting wiring is formed of a plurality of members and is configured such that the output wiring is placed among the plurality of members constituting current-collecting wiring and such that the output wiring is electrically connected to the current-collecting wiring.

### Claim 8 (depends on 5)

A method, for fabricating a photoelectric conversion device, according to claim 5, wherein surfaces of the output wiring and the current-collecting wiring are covered with a solder, and
wherein the output wiring and the current-collecting wiring are connected via the solder.