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Title: Electron beam stimulated formation of CdS nanoparticles within calixarene Langmuir-Blodgett films
Authors: Nabok, AV
Ray, AK
Hassan, AK
Keywords: Cadmium compounds;II-VI semiconductors;Nanostructured materials;Semiconductor quantum dots;Transmission electron microscopy;Electron diffraction;Langmuir-Blodgett films;Organic compounds;Ultraviolet spectra;Electron beam effects
Issue Date: 2000
Publisher: American Institute of Physics
Citation: Journal of Applied Physics, 88(3): 1333-1338, 2000
Abstract: Two possible types of cadmium sulphide (CdS) nanostructures can be formed within Langmuir-Blodgett (LB) films of calixarene Cd salt as a result of exposure to H2S gas: nanoclusters with the size of about 1.5 nm or two-dimensional planes with the thickness of about 1.7 nm. Transmission electron microscopy and electron diffraction studies on calixarene/CdS LB films show that CdS particles are not present in the fresh samples at the beginning, but they are gradually formed under exposure to a high energy electron beam. A blueshift of the first exciton absorption band and an increase of the extinction coefficient, caused by exposure to H2S gas, were found with UV-visible optical spectroscopy and surface plasmon resonance, respectively.
Description: Copyright @ 2000 American Institute of Physics.
ISSN: 0021-8979
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