Preparation and Characterization of Ge Nanoneedles AITranslate

1Heath J R,LeGoues F K. A liquid solution synthesis of single crystal germanium quantum wires[J]. Chem Phys Lett, 1993,208 (2) : 262-268.

2Hanrath T, Korgel B. Nucleation and growth of germanium nanowires seeded by organic monolayer-coated gold nanocrystals[J]. J Am Chem Soc, 2002,124 (7) : 1 424- 1 429.

3Hanrath T, Korgel B A. Crystallography and surface faceting of germanium nanowires[J]. Small, 2005,1 (7) : 717 -721.

5Dailey J W,Taraci J ,Clement T,et al. Vapor-liquid-solid growth of germanium nanostructures on silicon [J].J Appl Phys,2004,96(12) :7 556-7 567.

6Wang D, Dai H. Low-temperature synthesis of singlecrystal germanium nanowires by chemical vapor deposition[J].Angew Chem Int Ed,2002,41:4 783-4 786.

7Coleman N R B,Ryan K M,Spalding T R,etal. The formation of dimensionally ordered germanium nanowires within mesoporous silica[J].Chem Phys Lett,2001,343: 1-6.

8Han W Q, Wu L J,Zhu Y M,et al. In-situ growth of crystalline Ge nanowires by using nanotuhes as template[J]. Microsc Microanal, 2005,11 (S2) : 1 506-1 507.

10Morales A M, Lieber C M. A laser ablation method for the synthesis of crystalline semiconductor nanowires [J]. Science, 1998,279 (15) : 208-211.

9Kenneth E.Lee,Eugene A.Fitzgerald,Lionel C.Kimerling,Jurgen Michel.Efficient above-band-gap light emission in germanium[J].中国光学快报：英文版,2009,7(4):271-273.

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Chinese Library Classification Number:TN304.11[电子电信—物理电子学]

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Ge nanoneedles were prepared by hydrothermal deposition process using Ge and GeO2 as the starting materials and copper sheet as the deposition substrate. The Ge nanoneedle sample was characterized by scanning electron microscopy （SEM）, energy dispersive X-ray spectrum （EDS）, transmission electron microscopy （TEM） and high-resolution transmission electron microscopy （HRTEM）. The results demonstrate that the sample is of typical needle structure and composed of monocrystalline Ge and amorphous Ge oxide outer layer,and its length is more than 10 μm. Furthermore, the formation and growth of the Ge nanoneedle are explained by the mechanisms of metal-catalyzed vapor-liquid-solid and oxide-assisted growth.