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

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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.
Original languageEnglish
Article number125840
Number of pages5
JournalJournal of Crystal Growth
Volume548
Early online date2020
DOIs
Publication statusPublished - 15 Oct 2020
MoE publication typeA1 Journal article-refereed

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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