ALEXANDRIA, Va., Aug. 12 -- United States Patent no. 12,707,757, issued on Aug. 11, was assigned to LAPLACE Renewable Energy Technology Co. Ltd. (Shenzhen, China).

"Method for making solar cell and solar cell" was invented by Wei Fan (Shenzhen, China), Jiaji Lin (Shenzhen, China) and Wu Zhang (Shenzhen, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "A method for making a solar cell includes: providing and texturing a silicon substrate including a first surface and a second surface opposite to the first surface; performing boron diffusion and high-temperature oxidation treatment on the silicon substrate; forming a tunnel oxide layer and a doped polycrystalline silicon layer on a second surface; depositi...