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Aufsatz zugänglich unter
Nanostructures, optical properties, and imaging application of lead-sulfide nanocomposite coatings
URN: urn:nbn:de:bsz:291-scidok-30739
URL: http://scidok.sulb.uni-saarland.de/volltexte/2011/3073/
Quelle:
(2004) International journal of applied ceramic technology. - 1. 2004, 2, S. 119-128
pdf-Format:
Dokument 1.pdf (1.267 KB)
SWD-Schlagwörter:
Nanostruktur , Blei , Sulfide , Nanokristall , Nanokomposit , Absorption
Institut:
DDC-Sachgruppe:
Naturwissenschaften
Dokumentart:
Aufsatz
Sprache:
Englisch
Erstellungsjahr:
2004
Publikationsdatum:
18.02.2011
Kurzfassung auf Englisch:
Lead-sulfide (PbS) nanocrystals were precipitated in nanocomposite coatings after a pre-photo-polymerization followed by a reaction with H2S gas at 25°C for 1 hr. PbS nanocrystalline size and optical absorption increased with decreasing UV energy for prephoto-polymerization and increasing concentration. The absorption onset has a large blue shift from 0,41 eV of the corresponding bulk crystal, resulting from the quantum confinement effect. As a result, coating color changes significantly from deep brown to light yellow depending on coating processing conditions. Partially masking the coatings during pre-photo-polymerization gives rise to different colors, leading to imaging applications of PbS nanocomposite coatings.
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