FOLLOWUS
Guangxi Key Laboratory of Precision Navigation Technology and Application, Guilin University of Electronic Technology, Guilin 541004, China
Center for Optoelectronics Materials and Devices & Key Laboratory of Optical Field Manipulation of Zhejiang Province, Zhejiang Sci-Tech University, Hangzhou 310018, China
School of Mechanical Engineering, Shanghai Dianji University, Shanghai 200245, China
[ "Fabi ZHANG, E-mail: zhangfabi@outlook.com" ]
Zujun QIN, E-mail: qinzj@guet.edu.cn
纸质出版日期:2021-10,
收稿日期:2020-07-08,
修回日期:2021-09-02,
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张法碧, 孙巾寓, 李海鸥, 等. 磁控溅射法生长的带隙可调谐(Ga
FABI ZHANG, INYU SUNJ, HAIOU LI, et al. Band-gap tunable (Ga
张法碧, 孙巾寓, 李海鸥, 等. 磁控溅射法生长的带隙可调谐(Ga
FABI ZHANG, INYU SUNJ, HAIOU LI, et al. Band-gap tunable (Ga
采用磁控溅射技术和热退火技术在(0001)蓝宝石衬底上制备了多组分氧化物(Ga
x
In
1−
x
)
2
O
3
薄膜,实现可调带隙。详细研究了三元化合物(Ga
x
In
1−
x
)
2
O
3
在整个组成范围内的光学性质和能带结构演化。X射线衍射谱表明,Ga含量在0.11至0.55之间的(Ga
x
In
1−
x
)
2
O
3
薄膜既有立方结构,也有单斜结构,而Ga含量高于0.74的(Ga
x
In
1?
x
)
2
O
3
薄膜只有单斜结构。在可见光范围,所有薄膜透光率均高于86%,吸收边清晰,条纹清晰。此外,随着Ga含量增加,紫外吸收边出现380至250 nm的蓝移,表明禁带能从3.61 eV增加至4.64 eV。实验结果为透明导电化合物半导体(Ga
x
In
1−
x
)
2
O
3
薄膜在光电和光伏行业的应用,特别是在显示器、发光二极管和太阳能电池的应用奠定了基础。
Multicomponent oxide (Ga
x
In
1-
x
)
2
O
3
films are prepared on (0001) sapphire substrates to realize a tunable band-gap by magnetron sputtering technology followed by thermal annealing. The optical properties and band structure evolution over the whole range of compositions in ternary compounds (Ga
x
In
1-
x
)
2
O
3
are investigated in detail. The X-ray diffraction spectra clearly indicate that (Ga
x
In
1-
x
)
2
O
3
films with Ga content varying from 0.11 to 0.55 have both cubic and monoclinic structures
and that for films with Ga content higher than 0.74
only the monoclinic structure appears. The transmittance of all films is greater than 86% in the visible range with sharp absorption edges and clear fringes. In addition
a blue shift of ultraviolet absorption edges from 380 to 250 nm is noted with increasing Ga content
indicating increasing band-gap energy from 3.61 to 4.64 eV. The experimental results lay a foundation for the application of transparent conductive compound (Ga
x
In
1-
x
)
2
O
3
thin films in photoelectric and photovoltaic industry
especially in display
light-emitting diode
and solar cell applications.
(GaxIn1−x)2O3薄膜带隙可调谐磁控溅射
(GaxIn1-x)2O3 filmsBand-gap tunableMagnetron sputtering
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