共 17 条
Self-organized germanium quantum dots grown by molecular beam epitaxy on Si(100)
被引:25
作者:

Jiang, ZM
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h-index: 0
机构:
Fudan Univ, Surface Phys Lab, Shanghai 200433, Peoples R China Fudan Univ, Surface Phys Lab, Shanghai 200433, Peoples R China

Zhu, HJ
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h-index: 0
机构: Fudan Univ, Surface Phys Lab, Shanghai 200433, Peoples R China

Lu, F
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h-index: 0
机构: Fudan Univ, Surface Phys Lab, Shanghai 200433, Peoples R China

Qin, J
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h-index: 0
机构: Fudan Univ, Surface Phys Lab, Shanghai 200433, Peoples R China

Huang, DM
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h-index: 0
机构: Fudan Univ, Surface Phys Lab, Shanghai 200433, Peoples R China

Wang, X
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h-index: 0
机构: Fudan Univ, Surface Phys Lab, Shanghai 200433, Peoples R China

Hu, CW
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h-index: 0
机构: Fudan Univ, Surface Phys Lab, Shanghai 200433, Peoples R China

Chen, YF
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机构: Fudan Univ, Surface Phys Lab, Shanghai 200433, Peoples R China

Zhu, ZQ
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机构: Fudan Univ, Surface Phys Lab, Shanghai 200433, Peoples R China

Yao, T
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机构: Fudan Univ, Surface Phys Lab, Shanghai 200433, Peoples R China
机构:
[1] Fudan Univ, Surface Phys Lab, Shanghai 200433, Peoples R China
[2] Tohoku Univ, Mat Res Inst, Sendai, Miyagi, Japan
来源:
基金:
中国国家自然科学基金;
关键词:
quantum dots;
three-dimensional islanding growth;
molecular beam epitaxy;
D O I:
10.1016/S0040-6090(98)00444-1
中图分类号:
T [工业技术];
学科分类号:
08 ;
摘要:
Under proper and critical growth conditions, very uniform Ge islands could be formed on Si(100) by using molecular beam epitaxy. The atomic force microscopic and cross-sectional transmission electron microscopic observations illustrate that the size and height uniformities of the islands are about +/-3%. The Auger electron spectroscopic measurements show that the wetting layer is converted into a SiGe alloy layer due to its intermixing with the substrate during the growth. A very narrow peak with the full width at half maximum (FWHM) of 1.6 meV at the energy of 0.767 eV is observed at the temperature of 16 K. We attribute this peak to the free exciton longitudinal acoustic (LA) phonon replica originated from the Ge islands. As the temperature increases, this narrow peak splits into a doublet. This 'camel-like' peak is temporarily explained as the exciton-polariton luminescence. (C) 1998 Elsevier Science S.A. All rights reserved.
引用
收藏
页码:60 / 64
页数:5
相关论文
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