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I am unable to grasp how this only-rear-contact solar cell works. From what I understand the solar cell produces electricity by making the top and bottom side of solar cell complementing each other (that's why putting Al and Ag paste on both sides could be completing the circuit)

Thus, for this, how?

enter image description here

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  • $\begingroup$ Well it doesn't appear to have only 1 contact for starters. The top and bottom edges appear to be the two contacts, with copper fingers reach into the cell from each. $\endgroup$ – Drew Jan 4 at 9:02

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