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吉林大学电子科学与工程学院 集成光电子学国家重点联合实验室, 吉林 长春 130012
[ "刁肇悌(1998-),女,山东菏泽人,硕士研究生,2020年于山东大学获得学士学位,主要从事宽禁带半导体材料的研究。Email: Diaozt20@mails. jlu. edu. cn" ]
[ "董鑫(1980-),男,吉林桦甸人,博士,教授,2008 年于大连理工大学获得博士学位,主要从事宽禁带半导体材料及器件的研究。Email: dongx@jlu.edu.cn" ]
收稿日期:2021-12-20,
修回日期:2022-01-05,
纸质出版日期:2022-07-05
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刁肇悌,陈威,董鑫等.砷化镓热氧化法制备β⁃Ga2O3体块薄膜[J].发光学报,2022,43(07):1095-1101.
DIAO Zhao-ti,CHEN Wei,DONG Xin,et al.β-Ga2O3 Bulk Films Prepared by Thermal Oxidation of GaAs[J].Chinese Journal of Luminescence,2022,43(07):1095-1101.
刁肇悌,陈威,董鑫等.砷化镓热氧化法制备β⁃Ga2O3体块薄膜[J].发光学报,2022,43(07):1095-1101. DOI: 10.37188/CJL.20210399.
DIAO Zhao-ti,CHEN Wei,DONG Xin,et al.β-Ga2O3 Bulk Films Prepared by Thermal Oxidation of GaAs[J].Chinese Journal of Luminescence,2022,43(07):1095-1101. DOI: 10.37188/CJL.20210399.
通过对p型砷化镓(p⁃GaAs)单晶衬底高温热氧化方法制备了β⁃Ga
2
O
3
体块薄膜。探讨了高温氧化过程中O
2
流量对β⁃Ga
2
O
3
体块薄膜形貌的影响。通过对体块薄膜的晶体质量、结构特性、光致发光特性的测试分析,可以发现在高温高氧环境下GaAs转变为β⁃Ga
2
O
3
体块薄膜的过程与Langmuir蒸发相关。当O
2
流量较低时(0.2 L/min),GaAs衬底处于缺氧状态,所制备样品呈现纳米线状形貌;而当通入O
2
流量超过0.4 L/min时,GaAs衬底被完全氧化为具有纳米岛状结构的β⁃Ga
2
O
3
体块薄膜,且晶体质量得到显著提高。本文提出的砷化镓单晶热氧化工艺可以高效、低成本地获得较高结晶质量的纳米结构β⁃Ga
2
O
3
体块薄膜,对于β⁃Ga
2
O
3
材料的应用具有极大的丰富作用。
In this paper, β-Ga
2
O
3
bulk films were prepared by high-temperature thermal oxidation of p-type gallium arsenide (p-GaAs) single crystal substrate. The effect of O
2
flow rate on the morphology of β-Ga
2
O
3
bulk films was also discussed. By testing and analysing the crystal quality, structural characteristics and photoluminescence characteristics of the bulk films, we found that the transformation of GaAs into β-Ga
2
O
3
bulk films was related to Langmuir evaporation. When the O
2
flow rate was low(0.2 L/min), GaAs substrate was in anoxic state, and the prepared samples showed nanolinear morphology. However, when the flow rate of O
2
exceeds 0.4 L/min, GaAs substrate is completely oxidized into β-Ga
2
O
3
bulk film with nanometer island structure, and the crystal quality is significantly improved. The thermal oxidation process based on the GaAs single crystal proposed in this article can obtain nano-structured β-Ga
2
O
3
bulk films of high crystal quality with high efficiency and low cost. This process enriches the application of β-Ga
2
O
3
materials greatly.
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