Patent ID: 8404511

Claim:
A method for making a solar cell, the method including the steps of: providing a first substrate ( 210 ) with first and second faces ( 212 , 214 ); providing a second substrate ( 220 ) with first and second faces ( 222 , 224 ); providing a first coating device ( 10 ) for forming a transparent electrode layer ( 230 ) on the first face ( 212 ) of the first substrate ( 210 ); providing a second coating device ( 12 ) for forming an absorbing layer ( 260 ) on the first face ( 222 ) of the second substrate ( 220 ); and providing a joining device ( 14 ) for joining together the first and second substrates ( 210 , 220 ) by joining the transparent electrode layer ( 230 ) with the absorbing layer ( 260 ), wherein the step of forming the transparent electrode layer ( 230 ) on the first face ( 212 ) of the first substrate includes the steps of: forming a transparent conductive material layer ( 232 ) on the first face ( 212 ) of the first substrate ( 200 ); forming a coating-resisting material layer ( 280 ) on each of the first and second faces ( 212 , 214 ) of the first substrate ( 210 ); forming a buffering material layer ( 252 ) on the coating-resisting material layer ( 280 ) and the transparent conductive material layer ( 232 ); removing the coating-resisting material layer ( 280 ) so that the buffering material layer ( 252 ) exposes a portion of the transparent conductive material layer ( 232 ), and forming a pattern on the transparent conductive material layer ( 232 ) and the buffering material layer ( 252 ) to respectively form the transparent electrode layer ( 230 ) and the buffering layer ( 250 ) so that the transparent electrode layer ( 230 ) exposes a portion of the first substrate ( 210 ).