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Title: Formation and coarsening of near-surface Ga nanoparticles on SiNx

Journal Article · · Applied Physics Letters
DOI:https://doi.org/10.1063/1.4922454· OSTI ID:1370079

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
Citation Metrics:
Cited by: 1 work
Citation information provided by
Web of Science

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