Infrared-optical spectroscopy of transparent conducting perovskite (La,Ba)SnO3 thin films

被引：34
|
作者：
Seo, Dongmin [1 ]
Yu, Kwangnam [1 ]
Chang, Young Jun [1 ]
Sohn, Egon [2 ]
Kim, Kee Hoon [2 ]
Choi, E. J. [1 ]
机构：
[1] Univ Seoul, Dept Phys, Seoul 130743, South Korea
[2] Seoul Natl Univ, Dept Phys & Astron, Ctr Novel States Complex Mat Res, Seoul 151747, South Korea
来源：
APPLIED PHYSICS LETTERS | 2014年 / 104卷 / 02期
关键词：
INDIUM OXIDE; ZNO FILMS; DEPOSITION; SNO2;
D O I：
10.1063/1.4861776
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
We have performed optical transmission, reflection, spectroscopic ellipsometry, and Hall effect measurements on the electron-doped LaxBa1-xSnO3 (x = 0.04) transparent thin films. From the infrared Drude response and plasma frequency analysis we determine the effective mass of the conducting electron m* = 0.35m(0). In the visible-UV region the optical band gap shifts to high energy in (La, Ba)SnO3 by 0.18 eV compared with undoped BaSnO3 which, in the context of the Burstein-Moss analysis, is consistent with the infrared-m*. m* of BaSnO3 is compared with other existing transparent conducting oxides (TCO), and implication on search for high-mobility TCO compounds is discussed. (C) 2014 AIP Publishing LLC.
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页数：4
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