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Promising features of low-temperature grown Ge nanostructures on Si(001) substrates
Wang, Z; Wang, SG; Yin, YF; Liu, T; Lin, DD; Li, DH; Yang, XJ; Jiang, ZM; Zhong, ZY
2017
Source PublicationNANOTECHNOLOGY
ISSN0957-4484
Volume28Issue:11Pages:-
Subtype期刊论文
AbstractHigh-quality Ge nanostructures are obtained by molecular beam epitaxy of Ge on Si(001) substrates at 200 degrees C and ex situ annealing at 400 degrees C. Their structural properties are comprehensively characterized by atomic force microscopy, transmission electron microscopy and Raman spectroscopy. It is disclosed that they are almost defect free except for some defects at the Ge/Si interface and in the subsequent Si capping layer. The misfit strain in the nanostructure is substantially relaxed. Dramatically strong photoluminescence (PL) from the Ge nanostructures is observed. Detailed analyses on the power-and temperature-dependent PL spectra, together with a self-consistent calculation, indicate the confinement and the high quantum efficiency of excitons within the Ge nanostructures. Our results demonstrate that the Ge nanostructures obtained via the present feasible route may have great potential in. optoelectronic devices for. monolithic optical-electronic integration circuits.
KeywordSemiconductor Nanostructure Photoluminescence Raman Spectra Molecular Beam Epitaxy
DOI10.1088/1361-6528/aa5b3d
Indexed BySCI
Language英语
WOS IDWOS:000400813200001
Citation statistics
Document Type期刊论文
Identifierhttp://ir.sinap.ac.cn/handle/331007/27423
Collection中科院上海应用物理研究所2011-2018年
Recommended Citation
GB/T 7714
Wang, Z,Wang, SG,Yin, YF,et al. Promising features of low-temperature grown Ge nanostructures on Si(001) substrates[J]. NANOTECHNOLOGY,2017,28(11):-.
APA Wang, Z.,Wang, SG.,Yin, YF.,Liu, T.,Lin, DD.,...&Zhong, ZY.(2017).Promising features of low-temperature grown Ge nanostructures on Si(001) substrates.NANOTECHNOLOGY,28(11),-.
MLA Wang, Z,et al."Promising features of low-temperature grown Ge nanostructures on Si(001) substrates".NANOTECHNOLOGY 28.11(2017):-.
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