Jump to main content
Jump to site search

Issue 2, 2015
Previous Article Next Article

Near-band-edge exciton polarization change in ZnO nanowires

Author affiliations

Abstract

Using the atomistic pseudopotential method complemented by configuration interaction calculations, we have studied the electronic and optical properties of ZnO nanowires (NWs) in the presence of quantum confinement effects. Our results indicate that the near-band-edge exciton experiences a crossover from an in-plane polarized A-exciton (for D ≥ 3 nm) to an out-of-plane polarized C-exciton (for D < 3 nm) due to quantum confinement. This transition leads to a non-monotonic variation of Stokes shift, exhibiting a maximum value around the critical diameter of 3 nm. The observed behavior is analyzed by a stepwise inclusion of correlation effects, leading to a comprehensive description of the excitonic fine structure.

Graphical abstract: Near-band-edge exciton polarization change in ZnO nanowires

Back to tab navigation

Supplementary files

Publication details

The article was received on 10 Oct 2014, accepted on 05 Nov 2014 and first published on 12 Nov 2014


Article type: Paper
DOI: 10.1039/C4CP04551C
Author version available: Download Author version (PDF)
Citation: Phys. Chem. Chem. Phys., 2015,17, 1197-1203
  •   Request permissions

    Near-band-edge exciton polarization change in ZnO nanowires

    Z. Zeng, A. Petoni, C. S. Garoufalis, S. Baskoutas and G. Bester, Phys. Chem. Chem. Phys., 2015, 17, 1197
    DOI: 10.1039/C4CP04551C

Search articles by author

Spotlight

Advertisements