Conductivity of nanoporous InP membranes investigated using terahertz spectroscopy
Închide
Conţinutul numărului revistei
Articolul precedent
Articolul urmator
678 0
SM ISO690:2012
MERCHANT, S. K.E., LLOYD-HUGHES, James, SIRBU, Lilian, TIGINYANU, Ion, PARKINSON, Patrick, HERZ, Laura, JOHNSTON, Michael. Conductivity of nanoporous InP membranes investigated using terahertz spectroscopy. In: Nanotechnology, 2008, vol. 19, p. 0. ISSN 0957-4484. DOI: https://doi.org/10.1088/0957-4484/19/39/395704
EXPORT metadate:
Google Scholar
Crossref
CERIF

DataCite
Dublin Core
Nanotechnology
Volumul 19 / 2008 / ISSN 0957-4484

Conductivity of nanoporous InP membranes investigated using terahertz spectroscopy

DOI: https://doi.org/10.1088/0957-4484/19/39/395704

Pag. 0-0

Merchant S. K.E.1, Lloyd-Hughes James12, Sirbu Lilian34, Tiginyanu Ion34, Parkinson Patrick1, Herz Laura1, Johnston Michael1
 
1 University of Oxford,
2 Institut für Quantenelektronik ETH Zürich,
3 Technical University of Moldova,
4 Academy of Sciences of Moldova
 
Disponibil în IBN: 10 aprilie 2018


Rezumat

We have investigated the terahertz conductivity of extrinsic and photoexcited electrons in nanoporous indium phosphide (InP) at different pore densities and orientations. The form of electronic transport in the film was found to differ significantly from that for bulk InP. While photo-generated electrons showed Drude-like transport, the behaviour for extrinsic electrons deviated significantly from the Drude model. Time-resolved photoconductivity measurements found that carrier recombination was slow, with lifetimes exceeding 1 ns for all porosities and orientations. When considered together, these findings suggest that the surfaces created by the nanopores strongly alter the dynamics of both extrinsic and photoexcited electrons.

Cuvinte-cheie
Electric conductivity, indium phosphide