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Fabrication and Photoluminescent Properties of Gd2O3: Eu3+ Nanowires in AAO Template

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Abstract:

Uniform Gd2O3: Eu3+ nanowires were fabricated by using anodic aluminum oxide template (AAO). The spectral measurements indicate that with the increasing annealing temperature the excitation band of Eu3+ in Gd2O3 : Eu3+ nanowires/AAO shifted blue, the intensity ratio of 5D07F2 to 5D07F1 decreased, and the lifetime became longer. In the sample annealed at 1000°C two spectral components, the sharper and broader lines were identified, corresponding to two different local environments, the Eu3+ ions in cubic phase and in amorphous phase, respectively. The 5D07F1 transitions of Eu3+ ions in cubic phase had longer lifetime than that in amorphous phase. In contrast to the lifetime of the 5D07FJ transitions in the bulk, that in Gd2O3 : Eu3+/AAO composite films increased due to influence of the surrounding media (AAO).

Keywords: AAO TEMPLATE; ANNEALING; LOCAL ENVIRONMENTS; NANOWIRES; PHOTOLUMINESCENCE CHARACTERISTICS

Document Type: Research Article

DOI: http://dx.doi.org/10.1166/jnn.2007.103

Publication date: February 1, 2007

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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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