Preparation and optical properties of barium titanate thin films

被引：57
|
作者：
Cai, Wei [1 ,2 ]
Fu, Chunlin [1 ]
Gao, Jiacheng [2 ]
Guo, Qian [1 ]
Deng, Xiaoling [1 ]
Zhang, Chaoyang [3 ]
机构：
[1] Chongqing Univ Sci & Technol, Sch Met & Mat Engn, Chongqing 401331, Peoples R China
[2] Chongqing Univ, Coll Mat Sci & Engn, Chongqing 400044, Peoples R China
[3] CAEP, Inst Chem Mat, Mianyang 621900, Sichuan, Peoples R China
来源：
PHYSICA B-CONDENSED MATTER | 2011年 / 406卷 / 19期
关键词：
Barium titanate; Film; Sol-gel; Optical properties; Band structure; Band gap; ELECTRONIC-STRUCTURE; BATIO3; 1ST-PRINCIPLES; BAXSR1-XTIO3; SRTIO3;
D O I：
10.1016/j.physb.2011.06.041
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
Barium titanate (BTO) films were prepared by sol-gel spin-coating technique. The crystal structure and optical properties of BTO films have been investigated. The results indicate that the BTO films are single perovskite phase having tetragonal symmetry. The band gap of the BTO films increases with the increasing of layer number and decreasing of solution concentration. The transmittance and band gap of the BTO films annealed at 900 degrees C is more than that of the BTO films annealed at 700 degrees C when wavelength is 200-1000 nm. When wavelength is 400-1000 nm, the absorption coefficient alpha obtained by experiment is higher than that obtained by calculation (close to zero). (C) 2011 Elsevier B.V. All rights reserved.
引用
收藏
页码：3583 / 3587
页数：5
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