Patent ID: 8119903

Claim:
A method for manufacturing a single crystal silicon solar cell including at least a light reflection film, a single crystal silicon layer as a light conversion layer, and a transparent insulator substrate, which are laminated on one another with a surface on the transparent insulator substrate side used as a light receiving surface, comprising at least the steps of: preparing the transparent insulator substrate and the single crystal silicon substrate having a first conductivity type; implanting at least one of hydrogen ions and rare gas ions to the single crystal silicon substrate to form an ion implanted layer; performing surface activation on at least one of an ion-implanted surface of the single crystal silicon substrate and one surface of the transparent insulator substrate; bonding the ion-implanted surface of the single crystal silicon substrate and the transparent insulator substrate with the surface-activated surface being set as a bonding surface; applying an impact to the ion implanted layer to mechanically delaminate the single crystal silicon substrate to form the single crystal silicon layer; forming a plurality of diffusion regions having a second conductivity type different from the first conductivity type on the delaminated plane side of the single crystal silicon layer, and forming a plurality of pn junctions at least in a planar direction and forming a plurality of first conductivity type regions and a plurality of second conductivity type regions on the delaminated plane of the single crystal silicon layer; forming a plurality of first individual electrodes on the plurality of first conductivity type regions of the single crystal silicon layer, and forming a plurality of second individual electrodes on the plurality of second conductivity type regions of the single crystal silicon layer; forming first collecting electrodes connecting the plurality of first individual electrodes and second collecting electrodes connecting the plurality of second individual electrodes; and forming a light reflection film on a surface of the single crystal silicon substrate that is opposite to the ion-implanted surface of the single crystal silicon substrate that is bonded to the transparent insulator substrate.