| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a method of manufacturing a highly efficient and inexpensive solar cell by employing a rational process while reducing the usage of silicon by making the solar cell thinner. <P>SOLUTION: An SiO<SB POS="POST">2</SB>film and an SiN<SB POS="POST">x</SB>film are formed on both surfaces of a silicon solar cell having an n<SP POS="POST">+</SP>-p-p<SP POS="POST">+</SP>structure created by phosphorus diffusion and boron diffusion. A thin Al electrode having a grid electrode on the light receiving surface and many small openings on the rear surface is then formed over the substantially entire surface, thus forming a p<SP POS="POST">++</SP>layer which becomes a strong back surface field (BSF) layer in the Al electrode. <P>COPYRIGHT: (C)2012,JPO&INPIT |
