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Research and innovation | REF: RE257 V1

Atomic layer deposition for photovoltaics

Authors: Danièle BLANC PELISSIER, Nathanaelle SCHNEIDER

Publication date: November 10, 2016 | Lire en français

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    2. Passivation of high-efficiency crystalline silicon photovoltaic cells

    Crystalline silicon (c-Si) photovoltaic cells account for 80-90% of panels installed today. We'll start with an overview of ALD applications for this type of cell.

    2.1 The challenge: constantly improving the conversion efficiency of photovoltaic cells

    For c-Si cells, as for all other PV technologies, conversion efficiency is essentially limited by the quality of the absorber (which determines the lifetime of the charge carriers), resistive losses, the geometry of the electrical contacts and, finally, the recombination of charge carriers on the front and rear surfaces. The constant reduction in the thickness of silicon wafers means that surfaces play an increasingly important role. As a result, recombinations at the interfaces between a heavily doped semiconductor...

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