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The amorphous/crystalline silicon (a-Si/c-Si) heterostructure has recently attracted new interest due to higher open circuit voltage V oc and low temperature fabrication processes. By reducing the wafer thickness all these characteristics become a necessity, together with the requirement of a back reflecting mirror, to obtain an effective optical confinement. To this aim dielectric mirrors...
In this work we present the design and fabrication of a Bragg reflector, formed on the rear side of an amorphous/crystalline silicon (a-Si/c-Si) n-a-Si/i-a-Si/p-c-Si heterostructure solar cell, in order to obtain an enhancement of the optical confinement of the near-infrared wavelength. The mirror has been grown alternating several couples of amorphous silicon/silicon nitride films whose thicknesses...
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