Composition dependent mobility and bandgaps in (La0.05BaxSr0.95-x)SnO3 epitaxial films

doi:10.1063/5.0014409

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	Composition dependent mobility and bandgaps in (La0.05BaxSr0.95-x)SnO3 epitaxial films
	Li, Kaifeng 3; Gao, Qiang 3; Zhao, Li 3; Lv, Kai 3; Yin, Lichang 1; Liu, Qinzhuang 2,3
刊名	APPLIED PHYSICS LETTERS
	2020-08-17
卷号	117 期号:7 页码:5
ISSN号	0003-6951
DOI	10.1063/5.0014409
通讯作者	Liu, Qinzhuang(qzliu@mail.ustc.edu.cn)
英文摘要	Perovskite stannates ASnO(3) (A=Ba, Sr) as transparent conducting oxides have recently attracted much attention due to their high electron mobility and high optical transparency. Here, we investigated experimentally and theoretically the composition-dependent structural, electrical, and optical properties of (La0.05BaxSr0.95-x)SnO3 (LBSSO, x=0-0.95) thin films. Detailed x-ray diffraction characterization studies show that the LBSSO films were epitaxially grown on the LaAlO3(001) substrates. The out-of-plane lattice constants of the LBSSO films increase from 4.045 to 4.122 angstrom with incorporation of the Ba content from 0 up to 0.95 in the films. The electron mobility values of the films increase gradually from 22.2 to 34.4cm(2)/Vs with the increasing Ba contents. The direct/indirect optical bandgaps decrease monotonously from 4.64/4.04 to 4.05/3.40eV upon changing the Ba content from 0 to 0.95. Density functional theory calculations indicated that the Ba substitution can reduce the electron effective mass and the bandgaps, leading to a higher carrier mobility.
资助项目	Natural Science Foundation of China (NSFC)[11974127] ; Natural Science Foundation of China (NSFC)[51972312] ; Natural Science Foundation of Anhui Province[2008085MA19] ; Natural Science Foundation of Anhui Higher Education Institutions of China[KJ2019ZD40]
WOS研究方向	Physics
语种	英语
出版者	AMER INST PHYSICS
WOS记录号	WOS:000563578000001
资助机构	Natural Science Foundation of China (NSFC) ; Natural Science Foundation of Anhui Province ; Natural Science Foundation of Anhui Higher Education Institutions of China
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/140320]
专题	金属研究所_中国科学院金属研究所
通讯作者	Liu, Qinzhuang
作者单位	1.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China 2.Huaibei Normal Univ, Anhui Prov Key Lab Pollutant Sensit Mat & Environ, Huaibei 235000, Peoples R China 3.Huaibei Normal Univ, Sch Phys & Elect Informat, Huaibei 235000, Peoples R China
推荐引用方式 GB/T 7714	Li, Kaifeng,Gao, Qiang,Zhao, Li,et al. Composition dependent mobility and bandgaps in (La0.05BaxSr0.95-x)SnO3 epitaxial films[J]. APPLIED PHYSICS LETTERS,2020,117(7):5.
APA	Li, Kaifeng,Gao, Qiang,Zhao, Li,Lv, Kai,Yin, Lichang,&Liu, Qinzhuang.(2020).Composition dependent mobility and bandgaps in (La0.05BaxSr0.95-x)SnO3 epitaxial films.APPLIED PHYSICS LETTERS,117(7),5.
MLA	Li, Kaifeng,et al."Composition dependent mobility and bandgaps in (La0.05BaxSr0.95-x)SnO3 epitaxial films".APPLIED PHYSICS LETTERS 117.7(2020):5.