Formation and coarsening of near-surface Ga nanoparticles on SiNx
- Univ. of Michigan, Ann Arbor, MI (United States). Dept. of Materials Science and Engineering
Here, we have investigated the formation and coarsening of near-surface Ga nanoparticles (NPs) in SiNx using Ga+ focused-ion-beam-irradiation of SiNx, followed by rapid thermal annealing. For surfaces with minimal curvature, diffusive growth is apparent, leading to nearly close packed arrays with NP diameters as small as 3 nm and densities as high as ~4 × 1012 cm-2. The diffusive flux increases with annealing temperature, leading to NP coarsening by Ostwald ripening. For surfaces with increased curvature, diffusion towards the valleys also increases during annealing, leading to Ga NP coalescence and a bi-modal distribution of NP sizes.
- Research Organization:
- Energy Frontier Research Centers (EFRC) (United States). Center for Solar and Thermal Energy Conversion (CSTEC)
- Sponsoring Organization:
- USDOE Office of Science (SC), Basic Energy Sciences (BES)
- Grant/Contract Number:
- SC0000957
- OSTI ID:
- 1370079
- Alternate ID(s):
- OSTI ID: 1226759
- Journal Information:
- Applied Physics Letters, Vol. 106, Issue 24; Related Information: CSTEC partners with University of Michigan (lead); Kent State University; ISSN 0003-6951
- Publisher:
- American Institute of Physics (AIP)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
Cited by: 1 work
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