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New Generation Silicon Solar Cells

5.5 Solar cell contacts

New Generation Silicon Solar Cells

Prevent obscuration of the solar cell or high reflection and absorption of the silver grids.

small and high grids, which will become smaller towards the edge of the cell

COSIMA (Contacts to a-Si:H passivated wafers

by means of annealing):

Amorphous silicon (silane process) on mono-

crystalline silicon

Aluminium on theses layers results in

contacting the monocrystalline silicon

Process temperature ~ 200°C

No photolithography

Solar cell with a-Si:H-rear passivation and COSIMA contacts

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