130
S. Leu and D. Sontag
Fig. 5.18 Basic structure of the PERC back side in bifacial design. Above is the cross-section of
the PERC cell and below is the arrangement of the laser openings on the back side
5.5 Other Homojunction Cell Concepts
5.5.1 PERT Solar Cells (Passivated Emitter and Rear Totally
Diffused)
We have learnt that in the Al-BSF cell a back-surface field could be built up internally
thanks to the aluminium paste. As a result, the electrons at the back side of the cell
are repelled and sent back into the cell; they are then collected at the front side, where
S. Leu and D. Sontag
Fig. 5.18 Basic structure of the PERC back side in bifacial design. Above is the cross-section of
the PERC cell and below is the arrangement of the laser openings on the back side
5.5 Other Homojunction Cell Concepts
5.5.1 PERT Solar Cells (Passivated Emitter and Rear Totally
Diffused)
We have learnt that in the Al-BSF cell a back-surface field could be built up internally
thanks to the aluminium paste. As a result, the electrons at the back side of the cell
are repelled and sent back into the cell; they are then collected at the front side, where