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Study of the carrier transfer across the GaNP nanowire electrolyte interface by electron paramagnetic spin trapping
Justus Liebig University of Giessen, Germany.
Linköpings universitet, Institutionen för fysik, kemi och biologi, Ytors Fysik och Kemi. Linköpings universitet, Tekniska fakulteten. Linköpings universitet, Institutionen för fysik, kemi och biologi, Funktionella elektroniska material.ORCID-id: 0000-0001-7640-8086
Justus Liebig University of Giessen, Germany.
Linköpings universitet, Institutionen för fysik, kemi och biologi, Ytors Fysik och Kemi. Linköpings universitet, Tekniska fakulteten. Linköpings universitet, Institutionen för fysik, kemi och biologi, Funktionella elektroniska material.ORCID-id: 0000-0001-7155-7103
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2017 (engelsk)Inngår i: Applied Physics Letters, ISSN 0003-6951, E-ISSN 1077-3118, Vol. 110, nr 22, artikkel-id 222101Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

We investigate the transfer of photoexcited charge carriers from GaP and GaNP nanowires to an electrolyte by bias-dependent photocurrent and electron paramagnetic resonance experiments using 5,5-dimethyl-1-pyrroline-N-oxide as a spin trap. The results of the latter show that hydroxyl radicals are created over the entire applied bias range from -1000mV to +1300mV by hole transfer. In contrast, the photocurrent changes from cathodic to anodic at the open circuit potential of the three-electrode setup with the nanowire sample acting as the working electrode. The experiments show that the photoelectrochemical response of GaNP nanowires is significantly stronger compared to that of the GaP nanowires. Published by AIP Publishing.

sted, utgiver, år, opplag, sider
AMER INST PHYSICS , 2017. Vol. 110, nr 22, artikkel-id 222101
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URN: urn:nbn:se:liu:diva-139194DOI: 10.1063/1.4984277ISI: 000403341300019OAI: oai:DiVA.org:liu-139194DiVA, id: diva2:1120178
Tilgjengelig fra: 2017-07-05 Laget: 2017-07-05 Sist oppdatert: 2018-04-25

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