Carrier Lifetime and Mobility Enhancement in Nearly Defect-Free Core−Shell Nanowires Measured Using Time-Resolved Terahertz Spectroscopy

Parkinson, Patrick; J. Joyce, Hannah; Gao, Qiang; Hoe Tan, Hark; Zhang, Xin; Zou, Jin; Jagadish, C.; M. Herz, Laura; B. Johnston, Michael

doi:10.1021/nl9016336

Public

Carrier Lifetime and Mobility Enhancement in Nearly Defect-Free Core−Shell Nanowires Measured Using Time-Resolved Terahertz Spectroscopy

Published in Nano Letters • Jul 28, 2009

Authors:

Patrick Parkinson

Hannah J. Joyce

Qiang Gao

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-c...

Subject

Materials science

Terahertz radiation

Nanowire

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