Please use this identifier to cite or link to this item: doi:10.22028/D291-24408
Title: Inorganic-organic sol-gel processing of semiconductor quantum dots and some preliminary self-diffraction studies on CdS-PbS
Author(s): Spanhel, Lubomir
Schmidt, Helmut K.
Uhrig, A.
Klingshirn, C.
Language: English
Year of Publication: 1992
OPUS Source: Chemical processes in inorganic materials : Symposium held April 27-29, 1992, San Francisco, Calif. / Eds.: Persans, Peter D. ... - Pittsburgh, Pa. : Materials Research Society, 1992. — (Materials Research Society symposia proceedings ; 272), S. 53-58
SWD key words: Monolith
DDC notations: 620 Engineering and machine engineering
Publikation type: Conference Paper
Abstract: Films and monoliths, containing clusters (sizes < 5 nm) of the binary semiconductor CdS and sandwiched CdS-PbS, were prepared via multifunctional inorganic-organic sol-gel processing. As a sulfur source, hexamethyldisilylthiane was employed. In precursor sols, the metal sulfide clusters are carrying functionalized silanes acting as stabilizing centers as well as inorganic and organic network formers. Hydrolysis and condensation produces an inorganic network yielding viscous liquids useful to prepare optically transparent films or monoliths. The final organic cross-linking at T < 100°C results in materials of variable spectral response, thickness and optical density. In preliminar degenerate four-wave mixing experiments, self-diffraction from laser-induced gratings was observed on unsupported 200 µm thick CdS-PbS doped monoliths. The maximum first order grating efficiency, measured at different wavelengths between 490 and 520 nm, was 0,5 10-³ and the corresponding calculated effective third order susceptibility was of the order of 10(-9) esu.
Link to this record: urn:nbn:de:bsz:291-scidok-27153
ISBN: 1-55899-167-0
Date of registration: 18-Feb-2010
Faculty: SE - Sonstige Einrichtungen
Department: SE - INM Leibniz-Institut für Neue Materialien
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