Characterization of a Ga-Assisted GaAs Nanowire Array Solar Cell on Si Substrate

J P Boulanger,T Kasama,B Wood,S Yazdi,A C E Chia,R R Lapierre,M Aagesen

doi:10.1109/jphotov.2016.2537547

Characterization of a Ga-Assisted GaAs Nanowire Array Solar Cell on Si Substrate

J P Boulanger, T Kasama + Show 5 more

https://doi.org/10.1109/jphotov.2016.2537547

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Journal: IEEE Journal of Photovoltaics	Publication Date: May 1, 2016
Citations: 87

Affiliation: Technical University of Denmark, McMaster University, Rice University

#GaAs Nanowire Array Solar Cell #Si Substrate + Show 8 more

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Abstract

A single-junction core-shell GaAs nanowire (NW) solar cell on Si (1 1 1) substrates is presented. A Ga-assisted vapor-liquid-solid growth mechanism was used for the formation of a patterned array of radial p-i-n GaAs NWs encapsulated in AlInP passivation. Novel device fabrication utilizing facet-dependent properties to minimize passivation layer removal for electrical contacting is demonstrated. Thorough electrical characterization and analysis of the cell is reported. The electrostatic potential distribution across the radial p-i-n junction GaAs NW is investigated by off-axis electron holography.

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