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Preparation and Photoluminescence Properties of Eu 3+ ‐Doped BaZrO 3 Nanotube Arrays
Author(s) -
Guo Limin,
Wang Xiaohui,
Zhong Caifu,
Li Longtu
Publication year - 2011
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1551-2916.2011.04741.x
Subject(s) - photoluminescence , nanotube , materials science , luminescence , doping , excited state , hydrothermal circulation , octahedron , nanotechnology , hydrothermal synthesis , nanorod , band gap , crystallography , optoelectronics , chemical engineering , crystal structure , chemistry , carbon nanotube , atomic physics , physics , engineering
The BaZrO 3 : Eu hybrid nanotube arrays with different Eu 3+ ‐doped contents are synthesized by hydrothermal method using ZrO 2 nanotube layers as template. XRD , SEM , and TEM analysis reveal that the BaZrO 3 : Eu nanotubes have a cubic perovskite structure with uniform diameter (about 150 nm) and tubular wall. Photoluminescence property of the hybrid nanotube arrays are studied at room temperature. PL spectra, excited at 283 nm, consist of 4f→4f emission transitions from the 5 D 0 excited level of the Eu 3+ ions to the 7 F J (J = 0˜4) levels. The intense 5 D 0 – 7 F 0,2 transition suggests the local defects and distortion of EuO 6 octahedra in the BaZrO 3 : Eu host lattice. In addition, the dependence of luminescence intensity on the Eu 3+ concentration in the nanotube arrays is studied.