Structural and optical properties of silicon-germanium alloy nanoparticles

Chung Wei Lin, Shih Yen Lin, Si Chen Lee, Chi-Ta Chia

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

Silicon-germanium alloy nanoparticles with spherical shape have been prepared by the thermal evaporation method. The shape and structure of these dots have been studied. Transmission electron microscopy images show that the SiGe nanoparticles grown at 100 Torr may be composed of two half-moon shaped sections. Furthermore from the transmission electron diffraction patterns and Raman spectra, a change of structure from amorphous to crystalline at the 0.4 Torr growth pressure was observed. It is also found that if the growth pressure increases, the Ge composition of SiGe dots will decrease. A model is proposed to explain this phenomenon.

Original languageEnglish
Pages (from-to)2322-2325
Number of pages4
JournalJournal of Applied Physics
Volume91
Issue number3
DOIs
Publication statusPublished - 2002 Feb 1

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germanium alloys
silicon alloys
optical properties
nanoparticles
natural satellites
diffraction patterns
electron diffraction
evaporation
Raman spectra
transmission electron microscopy

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Structural and optical properties of silicon-germanium alloy nanoparticles. / Lin, Chung Wei; Lin, Shih Yen; Lee, Si Chen; Chia, Chi-Ta.

In: Journal of Applied Physics, Vol. 91, No. 3, 01.02.2002, p. 2322-2325.

Research output: Contribution to journalArticle

Lin, Chung Wei ; Lin, Shih Yen ; Lee, Si Chen ; Chia, Chi-Ta. / Structural and optical properties of silicon-germanium alloy nanoparticles. In: Journal of Applied Physics. 2002 ; Vol. 91, No. 3. pp. 2322-2325.
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