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Photoluminescence of High‐Aspect‐Ratio PbTiO 3 Nanotube Arrays
Author(s) -
Yang Yang,
Wang Xiaohui,
Sun Changku,
Li Longtu
Publication year - 2008
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.1551-2916.2008.02763.x
Subject(s) - photoluminescence , nanotube , materials science , raman spectroscopy , tetragonal crystal system , perovskite (structure) , spectroscopy , x ray photoelectron spectroscopy , hydrothermal synthesis , impurity , nanotechnology , optoelectronics , hydrothermal circulation , optics , crystallography , carbon nanotube , physics , chemistry , chemical engineering , crystal structure , nuclear magnetic resonance , engineering , quantum mechanics
High‐aspect‐ratio PbTiO 3 nanotube arrays have been synthesized by the hydrothermal method. X‐ray diffraction result shows that PbTiO 3 nanotube arrays have a tetragonal perovskite structure without any other impurity. The photoluminescence property of PbTiO 3 nanotube arrays studied at room temperature reveals a strong green emission band peaking at 550 nm (2.25 eV). Both Raman spectroscopy and X‐ray photoelectron spectroscopy demonstrate the existence of local defects in PbTiO 3 nanotube arrays, which act as emission source and result in the photoluminescence behavior of PbTiO 3 nanotube arrays.