Structure of germanium nanoparticles prepared by evaporation method
- 15 November 2003
- journal article
- research article
- Published by AIP Publishing in Journal of Applied Physics
- Vol. 94 (10) , 6818-6821
- https://doi.org/10.1063/1.1620373
Abstract
The structural characteristics of crystalline germanium nanoparticles prepared by an evaporation method were investigated by transmission electron microscopy and electron energy-loss spectroscopy. Fivefold multiply twinned particles with diameters as fine as 7 nm were found; the misfit angle caused by symmetry is compensated by lattice distortion without introducing lattice defects. It is clarified that both the quantum size effect and lattice distortion occur in particles with 12–20 nm diameter. Due to distortion, the unit cell volume of these particles is compressed to 94% of that for bulk, on average. It was also found that the diamond structure is stable when the particle diameter is as small as approximately 2 nm.This publication has 19 references indexed in Scilit:
- Structural and optical properties of germanium nanoparticlesJournal of Applied Physics, 2002
- Growth and electrical transport of germanium nanowiresJournal of Applied Physics, 2001
- Microstructural and photoluminescence studies of germanium nanocrystals in amorphous silicon oxide filmsJournal of Applied Physics, 2001
- Optical and structural studies of Ge nanocrystals embedded in AlN matrix fabricated by pulsed laser depositionApplied Physics Letters, 1999
- Raman characterization of germanium nanocrystals in amorphous silicon oxide films synthesized by rapid thermal annealingJournal of Applied Physics, 1999
- Density of states of the tetragonal-phase germanium nanocrystals using x-ray photoelectron spectroscopyApplied Physics Letters, 1998
- Photo-oxidation of germanium nanostructures deposited by the cluster-beam evaporation techniqueJournal of Applied Physics, 1997
- Tetragonal germanium flims deposited by the cluster-beam evaporation techniqueApplied Physics Letters, 1995
- New crystalline structure for nanometer-sized Ge microcrystallites prepared by plasma enhanced chemical vapor depositionApplied Physics Letters, 1994
- Formation of Ultrafine Particles by Gas-Evaporation Technique. V. Silicon and Germanium in ArgonJapanese Journal of Applied Physics, 1978