Recombination Dynamics of Surface-Related Excitonic States in Single ZnO Nanowires
With decreasing diameter the influence of surface-related effects becomes increasingly important for an understanding of the optical properties of semiconductor nanowires. We present time integrated and time resolved photoluminescence studies of single zincoxide nanowires with different
diameters. We analyze the changes in the optical spectra for wires with different surface-to-volume ratios, present optical spectra of single wires at different excitation densities, and study the time-resolved dynamics of the surface related and donor-bound exciton related emission lines
for a single nanowire at low temperatures.
Keywords: EXCITON; NANOWIRE; PHOTOLUMINESCENCE; RECOMBINATION DYNAMICS; SURFACE; SURFACE EXCITON; SURFACE LAYER; ZNO
Document Type: Research Article
Publication date: 01 January 2008
- Journal for Nanoscience and Nanotechnology (JNN) is an international and multidisciplinary peer-reviewed journal with a wide-ranging coverage, consolidating research activities in all areas of nanoscience and nanotechnology into a single and unique reference source. JNN is the first cross-disciplinary journal to publish original full research articles, rapid communications of important new scientific and technological findings, timely state-of-the-art reviews with author's photo and short biography, and current research news encompassing the fundamental and applied research in all disciplines of science, engineering and medicine.
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