Please use this identifier to cite or link to this item: doi:10.22028/D291-24398
Title: Semiconductor clusters in the sol-gel process : synthesis and properties of CdS nanocomposites
Author(s): Spanhel, Lubomir
Arpac, Ertugrul
Schmidt, Helmut K.
Language: English
Year of Publication: 1992
OPUS Source: Journal of non-crystalline solids. - 147/148. 1992, S. 657-662
SWD key words: Halbleiter
DDC notations: 620 Engineering and machine engineering
Publikation type: Journal Article
Abstract: CdS nanocomposites (CdS cluster sizes < 5 nm) were prepared via multifunctional inorganic-organic sol-gel processing. In CdS sols as precursors, the CdS clusters are carrying inorganic components as stabilizing centers, along with bifunctional ligands acting as inorganic and organic network formers. Hydrolysis and condensation produces an inorganic skeleton yielding viscous liquids useful to prepare films or monoliths. The final organic cross-linking at T < 100°C results in optically transparent materials. The nature of stabilizing centers and the starting synthesis conditions influence strongly the resulting electronic properties. Cd2+ complexed by mercapto compounds gives smaller cluster sizes with a narrower distribution than Cd2+ complexed with amine or carboxylate groups. Mercaptosilane-stabilized CdS clusters synthesized via cleavage of bis triethoxy silyl propyl tetrasulfides show an enhanced room temperature photoluminescence compared with similarly stabilized clusters prepared through H2S exposure.
Link to this record: urn:nbn:de:bsz:291-scidok-27034
Date of registration: 17-Feb-2010
Faculty: SE - Sonstige Einrichtungen
Department: SE - INM Leibniz-Institut für Neue Materialien
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