Parkinson, P and Joyce, HJ and Gao, Q and Tan, HH and Zhang, X and Zou, J and Jagadish, C and Herz, LM and Johnston, MB (2009) Carrier lifetime and mobility enhancement in nearly defect-free core-shell nanowires measured using time-resolved terahertz spectroscopy. Nano Lett, 9. pp. 3349-3353.
Full text not available from this repository.Abstract
We have used transient terahertz photoconductivity measurements to assess the efficacy of two-temperature growth and core-shell encapsulation techniques on the electronic properties of GaAs nanowires. We demonstrate that two-temperature growth of the GaAs core leads to an almost doubling in charge-carrier mobility and a tripling of carrier lifetime. In addition, overcoating the GaAs core with a larger-bandgap material is shown to reduce the density of surface traps by 82%, thereby enhancing the charge conductivity.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | Arsenicals Electric Conductivity Gallium Materials Testing Nanotechnology Nanowires Particle Size Photochemistry Surface Properties Temperature Terahertz Spectroscopy Time Factors |
| Subjects: | UNSPECIFIED |
| Divisions: | Div B > Electronics, Power & Energy Conversion |
| Depositing User: | Cron Job |
| Date Deposited: | 12 Jul 2013 15:10 |
| Last Modified: | 14 Oct 2013 01:13 |
| DOI: | 10.1021/nl9016336 |
Actions (login required)
| View Item |
