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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. |
URI: | http://jap.aip.org/resource/1/japiau/v88/i3/p1333_s1 http://bura.brunel.ac.uk/handle/2438/5733 |
DOI: | http://dx.doi.org/10.1063/1.373877 |
ISSN: | 0021-8979 |
Appears in Collections: | Publications |
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