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Aligned Er-Doped ZnO Nanorod Arrays with Enhanced 1.54 m Infrared Emission

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Abstract:

Vertically aligned Er-doped ZnO nanorod arrays with sharp and intense 1.54 m infrared emission have been fabricated on Si substrates through a well controlled spin-coating and annealing process. The synthesis method is advantageous for synthesizing ZnO nanostructures free from structural defects, capability for large-scale production, minimum equipment requirement and product homogeneity. Er atoms were found to incorporate into ZnO lattice from XRD, ESCA, TEM, STEM/EDS and PL measurements. The single-crystal Er-doped nanorods maintained their high microstructural quality after annealing for 4 hr at 800 °C. The intensity of 1.54 m infrared emission was found to be correlated with the deep level green emission. The enhanced luminescence intensity and best ever narrow wavelength distribution of Er-doped ZnO nanorod arrays at 1.54 m emission will be conductive to applications in optoelectronic devices and optical communications.

Keywords: ER-DOPED ZNO; INFRARED EMISSION; NANOROD ARRAYS

Document Type: Research Article

DOI: http://dx.doi.org/10.1166/jnn.2008.164

Publication date: July 1, 2008

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  • 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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