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Development of Ge nanoparticles embedded in GeO2 matrix
Y Batra1, D Kabiraj, D Kanjilal
1Inter University Accelerator Centre, Aruna Asaf Ali Marg, New Delhi 110067, India.
Journal of Nanoscience and Nanotechnology
|December 4, 2008
Summary
Germanium (Ge) nanoparticles embedded in a germanium dioxide (GeO2) matrix were successfully synthesized. These Ge nanoparticles exhibit promising optical properties, confirmed by various characterization techniques.
Area of Science:
- Materials Science
- Nanotechnology
- Solid State Physics
Background:
- Germanium (Ge) nanoparticles are of significant interest due to their unique optical properties.
- Controlling the formation and structure of Ge nanoparticles is crucial for their applications.
Purpose of the Study:
- To report the formation of Ge nanoparticles within a GeO2 matrix.
- To investigate the structural and optical evolution of these nanoparticles upon annealing.
Main Methods:
- Electron beam evaporation and subsequent annealing were employed for material preparation.
- Transmission electron microscopy (TEM) was used to confirm nanocrystal formation.
- Fourier transform infrared (FTIR) spectroscopy, Micro-Raman analysis, and photoluminescence (PL) spectroscopy were utilized for structural and optical characterization.
- Atomic force microscopy (AFM) was used to study surface morphology.
Main Results:
- Ge nanocrystals were observed in films annealed at 500°C.
- FTIR and Micro-Raman analyses confirmed the formation and structural evolution of Ge nanoparticles.
- Photoluminescence (PL) analysis further established the development of Ge nanoparticles.
- AFM revealed a granular structure evolution with increasing annealing temperature.
Conclusions:
- The study successfully demonstrates the formation of Ge nanoparticles embedded in a GeO2 matrix.
- The results indicate that annealing is effective in controlling the formation and structure of Ge nanoparticles.
- The characterized Ge nanoparticles show potential for applications leveraging their optical properties.
