Structural and optical properties of silicon-germanium alloy nanoparticles

Chung Wei Lin, Shih Yen Lin, Si Chen Lee, Chih Ta Chia

研究成果: 雜誌貢獻期刊論文同行評審

11 引文 斯高帕斯(Scopus)


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.

頁(從 - 到)2322-2325
期刊Journal of Applied Physics
出版狀態已發佈 - 2002 二月 1

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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