US Patent Issued to TONGWEI SOLAR (CHENGDU) on June 2 for "Solar cell and preparation method therefor" (Chinese Inventors)

ALEXANDRIA, Va., June 2 -- United States Patent no. 12,648,256, issued on June 2, was assigned to TONGWEI SOLAR (CHENGDU) Co. LTD. (Chengdu, China).

"Solar cell and preparation method therefor" was invented by Peng Zhang (Chengdu, China), Xiajie Meng (Chengdu, China) and Guoqiang Xing (Chengdu, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "In one aspect, a preparation method for a solar cell includes the following steps: sequentially forming a first silicon oxide layer, an intrinsic amorphous silicon layer, a phosphorosilicate glass layer and a second silicon oxide layer on the back surface of an n-type silicon substrate; removing the phosphorosilicate glass layer and the second silicon oxide layer in...