Fabrication and Photoluminescent Properties of Gd2O3: Eu3+ Nanowires in AAO Template
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 5D0–7F2 to 5D0–7F1 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 5D0–7F1 transitions of Eu3+ ions in cubic phase had longer lifetime than that in amorphous phase. In contrast to the lifetime of the 5D0–7FJ transitions in the bulk, that in Gd2O3 : Eu3+/AAO composite films increased due to influence of the surrounding media (AAO).
Document Type: Research Article
Publication date: February 1, 2007
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