Open Access
Two-photon-assisted excited state absorption in nanocomposite films of PbS stabilized in a synthetic glue matrix
Publication type: Journal Article
Publication date: 2007-01-12
scimago Q2
wos Q2
SJR: 0.597
CiteScore: 6.2
Impact factor: 2.8
ISSN: 09574484, 13616528
PubMed ID:
21730516
General Chemistry
General Materials Science
Electrical and Electronic Engineering
Mechanical Engineering
Bioengineering
Mechanics of Materials
Abstract
Strong nonlinear absorption is observed in nanocomposite films containing PbS nanocrystals of mean size of 3.3 nm stabilized in a commercial poly(vinyl acetate) glue by a novel and simple chemical route of synthesis. A significant blueshift of the optical absorption edge indicates strong quantum confinement. The mean nanocrystal size was characterized by x-ray diffraction and transmission electron microscopy. The surface structure of nanocrystals is analysed using infrared spectroscopy. The excitonic transitions are probed by photoacoustic spectroscopy and the results are analysed on the basis of theoretical calculations using envelope function formalism. Results of open aperture z-scan experiments suggest a model involving saturable absorption followed by two-photon absorption at a lower concentration while the data for a higher concentration fitted saturable absorption followed by three-photon absorption. Free carrier absorption due to two-photon-assisted excited state absorption appears to be the predominant mechanism of optical nonlinearity.
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57
Total citations:
57
Citations from 2024:
2
(3.51%)
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GOST
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Kurian P. A. et al. Two-photon-assisted excited state absorption in nanocomposite films of PbS stabilized in a synthetic glue matrix // Nanotechnology. 2007. Vol. 18. No. 7. p. 75708.
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Kurian P. A., Vijayan C., Sandeep C. S. S., Philip R., Sathiyamoorthy K. Two-photon-assisted excited state absorption in nanocomposite films of PbS stabilized in a synthetic glue matrix // Nanotechnology. 2007. Vol. 18. No. 7. p. 75708.
Cite this
RIS
Copy
TY - JOUR
DO - 10.1088/0957-4484/18/7/075708
UR - https://doi.org/10.1088/0957-4484/18/7/075708
TI - Two-photon-assisted excited state absorption in nanocomposite films of PbS stabilized in a synthetic glue matrix
T2 - Nanotechnology
AU - Kurian, Pushpa Ann
AU - Vijayan, C.
AU - Sandeep, C. S. Suchand
AU - Philip, Reji
AU - Sathiyamoorthy, K.
PY - 2007
DA - 2007/01/12
PB - IOP Publishing
SP - 75708
IS - 7
VL - 18
PMID - 21730516
SN - 0957-4484
SN - 1361-6528
ER -
Cite this
BibTex (up to 50 authors)
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@article{2007_Kurian,
author = {Pushpa Ann Kurian and C. Vijayan and C. S. Suchand Sandeep and Reji Philip and K. Sathiyamoorthy},
title = {Two-photon-assisted excited state absorption in nanocomposite films of PbS stabilized in a synthetic glue matrix},
journal = {Nanotechnology},
year = {2007},
volume = {18},
publisher = {IOP Publishing},
month = {jan},
url = {https://doi.org/10.1088/0957-4484/18/7/075708},
number = {7},
pages = {75708},
doi = {10.1088/0957-4484/18/7/075708}
}
Cite this
MLA
Copy
Kurian, Pushpa Ann, et al. “Two-photon-assisted excited state absorption in nanocomposite films of PbS stabilized in a synthetic glue matrix.” Nanotechnology, vol. 18, no. 7, Jan. 2007, p. 75708. https://doi.org/10.1088/0957-4484/18/7/075708.