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Direct growth of metal nanoplates on semiconductor substrates

Patent ·
OSTI ID:1531757
Metal nanoplates are grown on n-type and p-type semiconductor wafer substrates through galvanic reactions between substantially pure aqueous metal solutions and the substrates. The morphology of the resulting metal nanoplates that protrude from the substrate can be tuned by controlling the concentration of the metal solution and the reaction time of the solution with the semiconductor wafer. Nanoplate size gradually increases with prolonged growth time and the nanoplate thicknesses increases in a unique stepwise fashion due to polymerization and fusion of adjacent nanoplates. Further, the roughness of the nanoplates can also be controlled. In a particular embodiment, Ag nanoplates are grown on a GaAs substrate through reaction with a solution of AgNO3 with the substrate.
Research Organization:
Argonne National Laboratory (ANL), Argonne, IL (United States)
Sponsoring Organization:
USDOE
DOE Contract Number:
AC02-06CH11357; W-31109-ENG-38
Assignee:
UChicago Argonne, LLC (Chicago, IL)
Patent Number(s):
8,247,325
Application Number:
12/574,552
OSTI ID:
1531757
Country of Publication:
United States
Language:
English

References (10)

Synthesis of silver nanoplates at high yields by slowing down the polyol reduction of silver nitrate with polyacrylamide journal January 2007
Synthesis of Out-of-Substrate Au-Ag Nanoplates with Enhanced Stability for Catalysis journal September 2009
Effects of visible and synchrotron x-ray radiation on the growth of silver nanoplates on n-GaAs wafers: A comparative study journal May 2008
Synthesis of Ag Nanoplates on GaAs Wafers: Evidence for Growth Mechanism journal November 2009
Formation of Oxides and Their Role in the Growth of Ag Nanoplates on GaAs Substrates journal October 2008
Laser-Driven Growth of Silver Nanoplates on p-Type GaAs Substrates and Their Surface-Enhanced Raman Scattering Activity journal March 2009
Facile tuning of superhydrophobic states with Ag nanoplates journal October 2008
Comparative Study on the Growth of Silver Nanoplates on GaAs Substrates by Electron Microscopy, Synchrotron X-ray Diffraction, and Optical Spectroscopy journal May 2008
Surfactantless Synthesis of Silver Nanoplates and Their Application in SERS journal November 2007
Direct Growth of Dense, Pristine Metal Nanoplates with Well-Controlled Dimensions on Semiconductor Substrates journal November 2007

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Related Subjects

36 MATERIALS SCIENCE
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
77 NANOSCIENCE AND NANOTECHNOLOGY