SOLAR CELL AND METHOD AND APPARATUS FOR MAKING SAID SOLAR CELL Russian patent published in 2012 - IPC H01L31/18 

FIELD: physics.

SUBSTANCE: method of making a solar cell involves: forming a silicon layer on a p-type or n-type silicon substrate, said layer containing a dopant whose conductivity type differs from that of the silicon substrate, and diffusion of the dopant from the silicon layer into the silicon substrate via thermal treatment of the silicon layer. When the dopant diffuses from the silicon layer into the silicon substrate, the maximum heating temperature higher than or equal to 600°C and lower than or equal to 1200°C. Disclosed also is apparatus for making a solar cell and a second method of making a solar element.

EFFECT: invention enables to cut the duration of thermal treatment when the diffusion layer forms in the silicon substrate, possibility of cutting manufacturing time and eliminating several phases by simultaneously carrying out diffusion of the dopant and the process of burning the top electrode, and possibility of making a solar cell having the same photoelectric conversion efficiency as the conversion efficiency of an ordinary solar cell.

19 cl, 4 dwg, 2 ex