SOLAR BATTERY MANUFACTURING METHOD AND SOLAR BATTERY

Title:

SOLAR BATTERY MANUFACTURING METHOD AND SOLAR BATTERY

Document Type and Number:

Japanese Patent JP2017011190

Kind Code:

A

Abstract:

PROBLEM TO BE SOLVED: To provide a solar battery manufacturing method that uses aluminum as an element electrode on a solar battery having passive membranes on both the surfaces thereof, and can cause aluminum to act as a dopant in a semiconductor contacting aluminum, and suppress formation of oxide film.SOLUTION: A solar battery manufacturing method comprises: forming an opening h in a passivation film 121 on the back surface 100 B of a semiconductor substrate; bringing molten aluminum or aluminum alloy into contact with the opening h to form a back surface spot-like electrode 122D made of an aluminum-containing film; heating the semiconductor substrate after a light receiving surface electrode forming film containing glass frit is printed on the light receiving surface 100A to form a light receiving surface electrode 115 which penetrates through a passivation film 111 and contains glass frit; and heating the body portion 132 of an inter-element connection body comprising a metal foil while the body portion 132 is brought into contact with the back surface spot-like electrode 122D to diffuse aluminum just below the back surface spot-like electrode 122D so as to form a high-concentration p-type doped layer 123.SELECTED DRAWING: Figure 11

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Inventors:

NIINOBE DAISUKE
SAKAI YUICHI

Application Number:

JP2015127083A

Publication Date:

January 12, 2017

Filing Date:

June 24, 2015

Export Citation:

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Assignee:

MITSUBISHI ELECTRIC CORP

International Classes:

H01L31/0224; H01L31/068; H01L31/18

Domestic Patent References:

JP2013048126A	2013-03-07
JP2014075505A	2014-04-24
JP2015019049A	2015-01-29
JPH05235001A	1993-09-10
JP2000188409A	2000-07-04
JP2013151728A	2013-08-08

Foreign References:

US20120094421A1

2012-04-19

Attorney, Agent or Firm:

Jun Takamura

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