Please use this identifier to cite or link to this item: doi:10.22028/D291-24707
Title: Nonlinear optical properties of lead sulfide nanocrystals in polymeric coatings
Author(s): Lu, Songwei
Sohling, Ulrich
Mennig, Martin
Schmidt, Helmut K.
Language: English
Year of Publication: 2002
OPUS Source: Nanotechnology. - 13. 2002, 5, S. 669-673
SWD key words: NLO-Polymere
Fused Silica
DDC notations: 620 Engineering and machine engineering
Publikation type: Journal Article
Abstract: Lead sulfide (PbS) nanocrystals with a particle size of 3.3 +/- 0.7 nm have been synthesized in a poly vinyl alcohol (PVA) coating on fused silica glass substrates. The coating was dip-coated from a PVA aqueous solution, in which PbS nanocrystals were precipitated and stabilized in the polymer matrix. Third-order nonlinear optical susceptibility of PbS nanocrystals is dependent on the wavelength with its maximum located near the first excitonic absorption peak resulting from the quantum confinement effect, according to the results of degenerate four wave-mixing. This suggests an enhancement of the nonlinear optical property by excitonic resonance. The maximum figure of merit, chi((3))/alpha, is as high as 2.91 x 10(-12) esu m as measured at 595 nm.
Link to this record: urn:nbn:de:bsz:291-scidok-30318
Date of registration: 12-Nov-2010
Faculty: SE - Sonstige Einrichtungen
Department: SE - INM Leibniz-Institut für Neue Materialien
SciDok - Der Wissenschaftsserver der Universität des Saarlandes

Files for this record:
File Description SizeFormat 
sm200208.pdf1,17 MBAdobe PDFView/Open

Items in SciDok are protected by copyright, with all rights reserved, unless otherwise indicated.