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Title: Evolution of ion-induced nanoparticle arrays on GaAs surfaces

Journal Article · · Applied Physics Letters
DOI:https://doi.org/10.1063/1.4874329· OSTI ID:1383847
 [1];  [2];  [1];  [1];  [1];  [1];  [1]
  1. Univ. of Michigan, Ann Arbor, MI (United States). Dept. of Materials Science and Engineering
  2. Univ. of Michigan, Ann Arbor, MI (United States). Dept. of Physics
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We have examined the evolution of irradiation-induced Ga nanoparticle (NP) arrays on GaAs surfaces. Focused-ion-beam irradiation of pre-patterned GaAs surfaces induces monotonic increases in the NP volume and aspect ratio up to a saturation ion dose, independent of NP location within the array. Beyond the saturation ion dose, the NP volume continues to increase monotonically while the NP aspect ratio decreases monotonically. In addition, the NP volumes (aspect ratios) are highest (lowest) for the corner NPs. We discuss the relative influences of bulk and surface diffusion on the evolution of Ga NP arrays.

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:
1383847
Journal Information:
Applied Physics Letters, Vol. 104, Issue 18; 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: 2 works
Citation information provided by
Web of Science

References (10)

Mechanisms of ion-beam-enhanced diffusion in amorphous silicon journal June 1992
Nanoscale Optical Biosensor:  Short Range Distance Dependence of the Localized Surface Plasmon Resonance of Noble Metal Nanoparticles journal June 2004
Plasmonic nanoparticle enhanced light absorption in GaAs solar cells journal September 2008
PHYSICS: Negative Refractive Index at Optical Wavelengths journal January 2007
Surface plasmon resonances of Ga nanoparticle arrays journal August 2012
Ga nanoparticle-enhanced photoluminescence of GaAs journal September 2013
Spontaneous Growth of Gallium-Filled Microcapillaries on Ion-Bombarded GaN journal September 2013
Formation and coarsening of Ga droplets on focused-ion-beam irradiated GaAs surfaces journal October 2009
Modeling the diffusion of grown‐in Be in molecular beam epitaxy GaAs journal August 1995
Diffusion constant of Ga adatom on GaAs (001) surface: molecular dynamics calculations journal May 1995

Cited By (1)

Ion irradiation of III–V semiconductor surfaces: From self-assembled nanostructures to plasmonic crystals journal December 2019

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Related Subjects

36 MATERIALS SCIENCE
77 NANOSCIENCE AND NANOTECHNOLOGY
solar (photovoltaic)
solar (thermal)
phonons
thermal conductivity
thermoelectric
electrodes - solar
defects
charge transport
materials and chemistry by design
optics
synthesis (novel materials)
synthesis (self-assembly)