SOLAR CELL, PREPARATION METHOD THEREFOR, AND APPLICATION THEREOF

WIPO Patent Application WO/2023/208107

A1

The present application discloses a solar cell, a preparation method therefor, and an application thereof. The preparation method comprises: S10, providing a silicon wafer substrate having a first surface and a second surface opposite to the first surface; S20, forming a silicon-containing thin film on the first surface of the silicon wafer substrate; S30, patterning the silicon-containing thin film by using laser, to form a patterned region; S40, placing the silicon wafer substrate, which has the silicon-containing thin film and the patterned region, in an alkaline solution containing a monobasic strong base to prepare a pretreated silicon wafer substrate, and placing the pretreated silicon wafer substrate in a texturing solution containing a monobasic strong base for texturing treatment, wherein the molar concentration of the monobasic strong base in the alkaline solution is greater than the molar concentration of the monobasic strong base in the texturing solution. According to the preparation method, additional film layers formed during laser treatment are effectively removed, and effective texturing and effective etching of the patterned region can also be simultaneously achieved during the subsequent texturing treatment, so that good front side appearances of cells and cell performance are ensured.

FAN JIANBIN (CN)
MENG XIAJIE (CN)
XING GUOQIANG (CN)

PCT/CN2023/091139

November 02, 2023

April 27, 2023

Click for automatic bibliography generation  

TONGWEI SOLAR MEISHAN CO LTD (CN)

H01L31/18; C30B33/10; H01L31/068

CN114843368A	2022-08-02
CN113363354A	2021-09-07
CN111628049A	2020-09-04
CN113380922A	2021-09-10
US6133119A	2000-10-17

ADVANCE CHINA IP LAW OFFICE (CN)

View/Download PDF      PDF Help

Previous Patent: COMPOUND HAVING LIVER-TARGETING DELIVERY EFFECT AND OLIGONUCLEOTIDE CONJUGATE THEREOF

Next Patent: COMPOUND FOR REDUCING URIC ACID