Hybrid GaAs nanowire-polymer device on glass: Al-doped ZnO (AZO) as transparent conductive oxide for nanowire based photovoltaic applications

Al-doped ZnO (AZO) is pursued as an alternative low-cost transparent conductive oxide (TCO) to expensive ITO. Atomic layer deposition grown AZO films showing resistivity of 5 x 10-3 Ωcm and transmittance > 85% in the visible region are reported. Au-assisted GaAs nanowires are grown directly on an optimized AZO coated glass and a GaAs nanowire-polymer hybrid device on glass is demonstrated which confirms that the as-grown GaAs nanowires form a perfect ohmic contact to AZO film. The device shows that AZO can be used as transparent electrode as well as low-cost growth platform for GaAs NWs. Finally, a simple device idea is proposed to fabricate optically transparent GaAs nanowire based solar cells on low-cost glass.

Keywords

B2 semiconducting gallium arsenide, A1 nanostructures, B1 nanowires, A3 metalorganic vapor phase epitaxy, B3 photovoltaic applications, B2 transparent conductive oxides

DOI

10.1016/j.jcrysgro.2020.125840

Citation

Khayrudinov, V, Mäntynen, H, Dhaka, V, Pyymaki Perros, A, Haggren, T, Jussila, H & Lipsanen, H 2020, ' Hybrid GaAs nanowire-polymer device on glass: Al-doped ZnO (AZO) as transparent conductive oxide for nanowire based photovoltaic applications ', Journal of Crystal Growth, vol. 548, 125840 . https://doi.org/10.1016/j.jcrysgro.2020.125840

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https://urn.fi/URN:NBN:fi:aalto-202008285235

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[article-cris] Sähkötekniikan korkeakoulu / ELEC

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Hybrid GaAs nanowire-polymer device on glass: Al-doped ZnO (AZO) as transparent conductive oxide for nanowire based photovoltaic applications

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