Exploring the band structure of Wurtzite InAs nanowires using photocurrent spectroscopy
- Resource Type
- Authors
- A. S. Ameruddin; Samuel Linser; Hannah J. Joyce; Seyyedesadaf Pournia; Philippe Caroff; Jennifer Wong-Leung; Hark Hoe Tan; Chennupati Jagadish; Howard E. Jackson; Giriraj Jnawali; Leigh M. Smith
- Source
- Nano Research
- Subject
- Materials science
Photoluminescence
energy band structure
Nanowire
FOS: Physical sciences
Physics::Optics
02 engineering and technology
010402 general chemistry
01 natural sciences
Crystal
Condensed Matter::Materials Science
Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
General Materials Science
optical selection rules
Electrical and Electronic Engineering
Spectroscopy
Electronic band structure
Wurtzite crystal structure
Photocurrent
Condensed Matter - Materials Science
Condensed Matter - Mesoscale and Nanoscale Physics
Condensed matter physics
Condensed Matter::Other
business.industry
Materials Science (cond-mat.mtrl-sci)
Condensed Matter::Mesoscopic Systems and Quantum Hall Effect
021001 nanoscience & nanotechnology
Condensed Matter Physics
Atomic and Molecular Physics, and Optics
0104 chemical sciences
Wurtzite InAs
photocurrent measurement
Semiconductor
nanowires
0210 nano-technology
business
- Language
- ISSN
- 1998-0000
1998-0124
We use polarized photocurrent spectroscopy in a nanowire device to investigate the band structure of hexagonal Wurtzite InAs. Signatures of optical transitions between four valence bands and two conduction bands are observed which are consistent with the symmetries expected from group theory. The ground state transition energy identified from photocurrent spectra is seen to be consistent with photoluminescence emitted from a cluster of nanowires from the same growth substrate. From the energies of the observed bands we determine the spin orbit and crystal field energies in Wurtzite InAs. This information is essential to the development of crystal phase engineering of this important III-V semiconductor.
Comment: 25 pages, 5 figures