(19)
(11) EP 4 318 600 A8

(12) CORRECTED EUROPEAN PATENT APPLICATION
published in accordance with Art. 153(4) EPC

(15) Correction information:
Corrected version no 2 (W2 A1)

(48) Corrigendum issued on:
07.08.2024 Bulletin 2024/32

(43) Date of publication:
07.02.2024 Bulletin 2024/06

(21) Application number: 22872114.8

(22) Date of filing: 23.09.2022
(51) International Patent Classification (IPC): 
H01L 31/0216(2014.01)
H01L 31/068(2012.01)
C30B 29/06(2006.01)
 H01L 31/0236(2006.01)
H01L 31/18(2006.01)
C30B 33/10(2006.01)
(52) Cooperative Patent Classification (CPC):
Y02E 10/547; Y02P 70/50; C30B 33/10; C30B 29/06; H01L 31/068; H01L 31/1804; H01L 31/02366; H01L 31/02363; H01L 31/18
(86) International application number:
PCT/CN2022/120880
(87) International publication number:
WO 2023/046070 (30.03.2023 Gazette 2023/13)
(84) Designated Contracting States:
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated Extension States:
BA ME
Designated Validation States:
KH MA MD TN

(30) Priority: 23.09.2021 CN 202111114953

(71) Applicant: Trina Solar Co., Ltd
Changzhou, Jiangsu 213031 (CN)

(72) Inventors:
  • CHEN, Hong
    Changzhou, Jiangsu 213031 (CN)
  • GAO, Jifan
    Changzhou, Jiangsu 213031 (CN)
  • CHEN, Yifeng
    Changzhou, Jiangsu 213031 (CN)

(74) Representative: Canzler & Bergmeier Patentanwälte Partnerschaft mbB 
Despag-Straße 6
85055 Ingolstadt
85055 Ingolstadt (DE)

   


(54) TEXTURE STRUCTURE OF SOLAR CELL AND PREPARATION METHOD THEREFOR


(57) The present invention provides a texture structure of a solar cell and a preparation method therefor. The texture structure comprises a texture; a texture surface comprises a contact region and a non-contact region; the contact region is provided with a metal gate line; the specific surface area of the contact region is less than that of the non-contact region. According to the texture structure of a solar cell and the preparation method therefor provided by the present invention, texture structures having different microscopic morphologies are formed on the texture of a metal gate line coverage region and the texture of a metal gate line non-coverage region, and the specific surface area of the texture structure in the non-coverage region is much greater than that of the texture structure in the coverage region, thereby reducing the contact area between slurry metal and the PN junction on the texture, reducing metal compounding by more than 20%, and improving conversion efficiency.