Solution synthesis and characterization of quantum confined Ge nanoparticles
A solution synthesis of crystalline Ge nanoparticles (nc-Ge) is reported. The metathesis reaction of NaGe with excess GeCl{sub 4} in glyme solvents produces nc-Ge. Metathesis reactions between KGe and excess GeCl{sub 4} or GeCl{sub 2}:(dioxane) in glyme and Mg{sub 2}Ge and excess GeCl{sub 4} in diglyme and triglyme were also investigated. The surface of these nanoparticles is terminated with alkyl groups by reaction with alkyl Li and Grignard reagents. The alkyl-terminated crystalline Ge nanoparticles ({cflx R}-nc-Ge) were characterized by Fourier transform infrared spectroscopy, high-resolution transmission electron microscopy, powder X-ray diffraction, UV-vis absorption spectroscopy, photoluminescence, and photoluminescence excitation spectroscopy. The optical properties of {cflx R}-nc-Ge made by this method agree with predictions from quantum confinement models.
- Research Organization:
- Lawrence Livermore National Lab., CA (US)
- Sponsoring Organization:
- US Department of Energy; National Science Foundation
- DOE Contract Number:
- AC03-76SF00098; W-7405-ENG-48
- OSTI ID:
- 20001172
- Journal Information:
- Chemistry of Materials, Journal Name: Chemistry of Materials Journal Issue: 9 Vol. 11; ISSN CMATEX; ISSN 0897-4756
- Country of Publication:
- United States
- Language:
- English
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