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

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Journal Title
Journal ISSN
Volume Title
A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
Date
2020-10-15
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Mcode
Degree programme
Language
en
Pages
Series
Journal of Crystal Growth, Volume 548
Abstract
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.
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Keywords
B2 semiconducting gallium arsenide, A1 nanostructures, B1 nanowires, A3 metalorganic vapor phase epitaxy, B3 photovoltaic applications, B2 transparent conductive oxides
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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