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Synthesis and White-Light Emission of ZnO/HfO2: Eu Nanocables

Liu, Lixin and Zhang, Hongliang and Wang, Yuan and Su, Yurong and Ma, Ziwei and Xie, Yizhu and Zhao, Haiting and Chen, Changcheng and Liu, Yanxia and Guo, Xiaosong and Su, Qing and Xie, Erqing (2010) Synthesis and White-Light Emission of ZnO/HfO2: Eu Nanocables. Nanoscale Research Letters, 5 (9). pp. 1418-1423.

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Abstract

ZnO/HfO2:Eu nanocables were prepared by radio frequency sputtering with electrospun ZnO nanofibers as cores. The well-crystallized ZnO/HfO2:Eu nanocables showed a uniform intact core–shell structure, which consisted of a hexagonal ZnO core and a monoclinic HfO2 shell. The photoluminescence properties of the samples were characterized. A white-light band emission consisted of blue, green, and red emissions was observed in the nanocables. The blue and green emissions can be attributed to the zinc vacancy and oxygen vacancy defects in ZnO/HfO2:Eu nanocables, and the yellow–red emissions are derived from the inner 4f-shell transitions of corresponding Eu3+ ions in HfO2:Eu shells. Enhanced white-light emission was observed in the nanocables. The enhancement of the emission is ascribed to the structural changes after coaxial synthesis.

Item Type:Article
Uncontrolled Keywords:ZnO, HfO2:Eu, Nanocables, White-light emission, Electrospinning
Subjects:Material Science > Nanofabrication processes and tools
Material Science > Nanostructured materials
ID Code:9544
Deposited By:SPI
Deposited On:21 Oct 2010 09:25
Last Modified:21 Oct 2010 09:25

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