Patent ID: 8211738

Claim:
A method of fabricating a polycrystalline silicon solar cell, comprising: forming a back electrode on a transparent insulating substrate; forming a first conductive polycrystalline silicon layer on the back electrode; patterning the first conductive polycrystalline silicon layer to form a plurality of island patterns disposed at regular intervals; forming an intrinsic amorphous silicon layer on the first conductive polycrystalline silicon layer; doping a second conductive dopant to a predetermined depth into the intrinsic amorphous silicon layer through an ion injection process; heat-treating the transparent insulating substrate to vertically crystallize the intrinsic amorphous silicon layer using the first conductive polycrystalline silicon layer as a seed for crystallization through a metal induced vertical crystallization (MIVC) process, and simultaneously activating the second conductive dopant to form the intrinsic amorphous silicon layer into a light-absorbing layer made of polycrystalline silicon and a second conductive polycrystalline silicon layer; depositing a transparent electrode layer on the second conductive polycrystalline silicon layer; forming front electrodes on the transparent electrode layer; and forming an anti-reflection coating film to cover the front electrodes and the transparent electrode layer.