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Effective Passivation of Black Silicon Surfaces by Atomic Layer Deposition

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7 Author(s)
Repo, P. ; Sch. of Electr. Eng., Aalto Univ., Aalto, Finland ; Haarahiltunen, A. ; Sainiemi, L. ; Yli-Koski, M.
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The poor charge-carrier transport properties attributed to nanostructured surfaces have been so far more detrimental for final device operation than the gain obtained from the reduced reflectance. Here, we demonstrate results that simultaneously show a huge improvement in the light absorption and in the surface passivation by applying atomic layer coating on highly absorbing silicon nanostructures. The results advance the development of photovoltaic applications, including high-efficiency solar cells or any devices, that require high-sensitivity light response.

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Photovoltaics, IEEE Journal of  (Volume:3 ,  Issue: 1 )