Patent ID: 8304336

Claim:
A method for fabricating a solar cell comprising a first electrode, a P layer, an intrinsic layer, an N-type layer and a second electrode, the method comprising: preparing a first-type Si substrate; forming a first electrode on a rear surface of the first-type Si substrate; forming an intrinsic layer on a front surface of the first-type Si substrate, the intrinsic layer including a hydrogenated amorphous silicon (Si) thin film by an inductively coupled plasma chemical vapor deposition (ICP-CVD) device using mixed gas including hydrogen (H2) gas and silane (SiH4) gas, wherein a maximum ratio of hydrogen gas relative to silane gas is about 10:1 and a minimum ratio of hydrogen gas relative to silane gas is about 8:1, wherein the intrinsic layer is one of a-Si:H layer or a μc-Si:H layer, wherein in the forming of the intrinsic layer, a working pressure ranges from about 70 to about 90 mtorr, and an inductively coupled plasma (ICP) power ranges from about 200 to about 300 W and a substrate temperature ranges from about 250 to about 350 C; forming a second-type layer on the intrinsic layer; and forming a second electrode on the second-type layer.