A low temperature solution phases synthesis for silicon quantum dots
Conference
·
OSTI ID:559979
- Univ. of California, Davis, CA (United States)
- Lawrence Livermore National Lab., CA (United States); and others
Silicon nanoparticles are of interest because of their optoelectronic properties. This warrants finding new methods for making these clusters which are more economical and allow for greater versatility in their mechanical and chemical manipulation. We have produced silicon nanoclusters using a low temperature solution phase method. Our approach uses the Zintl salts KSi, NaSi or Mg{sub 2}Si as the source of silicon anion, This is reacted with tetrachlorosilane, the silicon cation source, in appropriate solvents. These nanoclusters have been terminated with various organic groups via reaction with alkyl-Li or alkylgrignard reagents. High resolution TEM, FTIR, and Raman spectroscopy have been used to establish the size, structure and surface composition of the particles. UV-vis and photoluminescence have been used to investigate their optical properties. The effect of termination on the photoluminescence will be discussed in detail.
- OSTI ID:
- 559979
- Report Number(s):
- CONF-970443--
- Country of Publication:
- United States
- Language:
- English
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