Work

Temperature dependence of photoluminescence from single core-shell GaAs–AlGaAs nanowires

Year: 2006

Type: article

Abstract: Temperature-dependent polarized microphotoluminescence measurements of single GaAs∕AlGaAs core-shell nanowires are used to probe their electronic states. The low-temperature emission from these wires is strongly enhanced compared with that observed in bare GaAs nanowires and is strongly polarized, reflecting the dielectric mismatch between the nanowire and the surrounding air. The temperature-dependent band gap of the nanowires is seen to be somewhat different from that observed in bulk GaAs, and the PL rapidly quenches above 120K, with an activation energy of 17meV reflecting the presence of nonradiative defects.

Source: Applied Physics Letters

DOI: 10.1063/1.2364885

Authors: L. V. Titova, Thang B. Hoang, H. E. Jackson, L. M. Smith, J. M. Yarrison-Rice, Y. Kim, H. J. Joyce, H. H. Tan, C. Jagadish

Institutions: University of Cincinnati, Miami University, Australian National University, Dong-A University

Language: English

Topic: Nanowire Synthesis and Applications

Subfield: Biomedical Engineering

Field: Engineering

Domain: Physical Sciences

Open Access status: bronze

OpenAlex ID: W2069715449

FWCI: 8.698

Cites: 18

Cited by: 183

Related to: 10