Sol-Gel Template Synthesis and Photoluminescence Properties of (Pb_(0.5)Sr_(0.5))TiO_(3) Nanotube Arrays

作     者：JIANG Yan-Ping WANG Yu CHAN Lai Wa Helen TANG Xin-Gui ZHOU Yi-Chun 蒋艳平;王雨;陈王丽华;唐新桂;周益春

作者机构：Key Laboratory of Low-Dimensional Materials and Application TechnologyXiangtan UniversityXiangtan 411105 Department of Applied Physics and Materials Research CentreHong Kong Polytechnic UniversityHung HomKowloonHong KongChina School of Physics&Optoelectric Engineeringand Guangzhou Higher Education Mega CenterGuangdong University of TechnologyGuangzhou 510006 

出 版 物：《Chinese Physics Letters》 (中国物理快报（英文版）)

年 卷 期：2011年第28卷第7期

页      面：278-281页

核心收录：

学科分类：08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 0704[理学-天文学] 

基　　金：by the Major Program of the National Natural Science Foundation of China under Grant No 11032010 the Opening Project Program of Key Laboratory of Low-Dimensional Materials and Application Technology(Ministry of Education) Xiangtan University,under Grant No DWKF0804 

主　　题：template perovskite bands 

摘      要：Lead strontium titanate(Pb_(0.5)Sr_(0.5))TiO_(3)(PST)nanotube arrays are prepared by a sol-gel and spin-coating process using an anodic aluminium oxide *** structure and morphology of the as-prepared sample are characterized by x-ray diffraction,scanning electron microscopy and transmission electron *** results show that the as-prepared PST sample possesses a perovskite structure with a relatively uniform diameter of about 200 ***(PL)spectrum of the sample shows emission bands centered at about 2.87 eV at room temperature,which consists of three intense emission sub-bands at 3.02,2.87 and 2.76 eV,*** energy corresponding to the central PL peak is lower than the band-gap energy(3.2 eV)of PST bulk materials,which may originate from the size effect of the PST nanotube *** multi-peaks in the PL spectrum may be attributed to the radiative recombination of trapped electrons and holes in tail and gap states induced by local defect and oxygen *** Raman scattering spectrum of the PST nanotube arrays,which are obviously broadened in comparison with the bulk materials,show that their phonon modes are in agreement with those allowed in the tetragonal phase.