Journal article
Polarization anisotropy of individual core/shell GaAs/AlGaAs nanowires by photocurrent spectroscopy
Applied physics letters, v 98(15), p153106
11 Apr 2011
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Abstract
We investigate the photodetection properties of individual core/shell GaAs/AlGaAs nanowires (NWs) and, in particular, their behavior under linearly polarized light. The NWs are grown by Au-assisted metalorganic vapor phase epitaxy and electrical contacts are defined on NWs by electron beam induced deposition. The spectral photocurrent of the single NW is measured and the dependence of the polarization anisotropy rho (varying from similar to 0.1 to similar to 0.55) on the absorption wavelength is found to be clearly affected by the core/shell structure. High quantum efficiency values (10% at 600 nm) are obtained which are attractive for a wide range of optoelectronic devices. (C) 2011 American Institute of Physics. [doi:10.1063/1.3578189]
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Details
- Title
- Polarization anisotropy of individual core/shell GaAs/AlGaAs nanowires by photocurrent spectroscopy
- Creators
- Anna Persano - Natl Council Res IMM CNR, Inst Microelect & Microsyst, Unit Lecce, I-73100 Lecce, ItalyBahram Nabet - Drexel UniversityAntonietta Taurino - Natl Council Res IMM CNR, Inst Microelect & Microsyst, Unit Lecce, I-73100 Lecce, ItalyPaola Prete - Natl Council Res IMM CNR, Inst Microelect & Microsyst, Unit Lecce, I-73100 Lecce, ItalyNico Lovergine - Univ Salento, Dept Innovat Engn, I-73100 Lecce, ItalyAdriano Cola - Natl Council Res IMM CNR, Inst Microelect & Microsyst, Unit Lecce, I-73100 Lecce, Italy
- Publication Details
- Applied physics letters, v 98(15), p153106
- Publisher
- American Institute of Physics
- Number of pages
- 3
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Electrical and Computer Engineering
- Web of Science ID
- WOS:000289580800054
- Scopus ID
- 2-s2.0-79954615493
- Other Identifier
- 991019168420104721
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- Collaboration types
- Domestic collaboration
- International collaboration
- Web of Science research areas
- Physics, Applied