Patent ID: 8633379

Claim:
A solar cell, comprising: a substrate having a first conductivity type and made of crystalline semiconductor; an emitter region including a first emitter portion formed of an amorphous semiconductor and a second emitter portion formed of a crystalline semiconductor, the first emitter portion and the second emitter portion each having a second conductivity type opposite the first conductivity type and forming a p-n junction with the substrate; a surface field region including a first surface field portion formed of an amorphous semiconductor and a second surface field portion formed of a crystalline semiconductor and being separated from the emitter region, the first surface field portion and the second surface field portion each having the first conductive type; a first buffer region positioned between the emitter region and the substrate and between the surface field region and the substrate; a first electrode being directly contacted with the second emitter portion of the emitter region; and a second electrode being directly contacted with the second surface field portion of the surface field region.