Title:
METHOD FOR PRODUCING SOLAR BATTERY
Document Type and Number:
WIPO Patent Application WO/2020/116794
Kind Code:
A1
Abstract:
The present invention relates to a method for producing a solar battery. A method for producing a solar battery according to an embodiment of the present invention comprises: an n-type film depositing step of depositing a first conductive region, which is a silicon layer containing n-type conductive impurities, onto a first surface of a semiconductor substrate made of a silicon wafer material; and a p-type film depositing step of, after the n-type film depositing step, depositing a second conductive region, which is a silicon layer containing p-type conductive impurities, onto a second surface of the semiconductor substrate, wherein a first deposition temperature in the n-type film depositing step is higher than a second deposition temperature in the p-type film depositing step. In addition, a method for producing a solar battery according to another embodiment of the present invention may further comprise: an n-type film depositing step; a p-type film depositing step; a transparent electrode depositing step of, after the p-type film depositing step is performed, depositing a first and a second transparent electrode layer onto a first and a second conductive region; and an electrode firing step of applying paste for a first and a second contact electrode onto the first and the second transparent electrode layer, respectively, and firing same, wherein a heat treatment temperature of the electrode firing step is higher than a first deposition temperature in the n-type film depositing step and a second deposition temperature in the p-type film depositing step.
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Inventors:
LEE KYOUNGSOO (KR)
HWANG SUNGHYUN (KR)
PARK SANGWOOK (KR)
HWANG SUNGHYUN (KR)
PARK SANGWOOK (KR)
Application Number:
PCT/KR2019/014773
Publication Date:
June 11, 2020
Filing Date:
November 01, 2019
Export Citation:
Assignee:
LG ELECTRONICS INC (KR)
International Classes:
H01L31/0392; H01L31/0224; H01L31/0376; H01L31/072; H01L31/18
Foreign References:
| US20120211079A1 | 2012-08-23 | |||
| KR20080074127A | 2008-08-12 | |||
| KR20150114792A | 2015-10-13 | |||
| KR20120122292A | 2012-11-07 | |||
| KR20180018895A | 2018-02-22 |
Attorney, Agent or Firm:
ROYAL PATENT & LAW OFFICE (KR)
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