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Supercritical Fluid Deposition of Uniform PbS Nanoparticle Films for Energy‐Transfer Studies
Author(s) -
Wang Joanna S.,
Brown Gail J.,
Hung WeiChun,
Wai Chien M.
Publication year - 2012
Publication title -
chemphyschem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.016
H-Index - 140
eISSN - 1439-7641
pISSN - 1439-4235
DOI - 10.1002/cphc.201200042
Subject(s) - nanoparticle , supercritical fluid , deposition (geology) , materials science , chemical engineering , nanotechnology , silicon , copper , chemistry , optoelectronics , organic chemistry , metallurgy , biology , paleontology , sediment , engineering
Using supercritical fluid CO 2 (Sc‐CO 2 ) as a medium, PbS nanoparticles can be uniformly deposited on surfaces of various substrates. Sc‐CO 2 deposition of PbS nanoparticles on carbon‐coated copper grids, into small holes in silicon, and formation of uniform PbS nanoparticle films on glass are described. Fluorescence spectra of PbS nanoparticles obtained from the films prepared by the Sc‐CO 2 method indicate effective energy transfer between PbS nanoparticles of different sizes.