Optical thin film filters of colloidal gold and silica nanoparticles prepared by a layer-by-layer self-assembly method
2011 (English)In: Journal of Materials Science, ISSN 0022-2461, E-ISSN 1573-4803, Vol. 46, no 21, 6877-6882 p.Article in journal (Refereed) Published
A novel fabrication method for optical thin film filters based on the self-organization of alternating layers of colloidal gold and silica nanoparticles (NP) is reported. The filter is designed to work in the deep-UV to visible spectral range. The spectral absorption peaks are tuned by three parameters: the organic capping ligand of the gold NPs (citrate, chitosan, poly (diallyl-dimethylammonium)- chloride or PDDA); the capping environment (bare, chitosan, or PDDA) of the silica NPs and the thickness of the film. Precise control of the transmission color (less than 1% color distance per layer), is achieved by changing the film thickness. Exploitation of the self-assembly process should lead to the facile production of highly reliable large area thin film optical filters at considerably lower costs.
Place, publisher, year, edition, pages
Springer, 2011. Vol. 46, no 21, 6877-6882 p.
IdentifiersURN: urn:nbn:se:kth:diva-176526DOI: 10.1007/s10853-011-5651-0ISI: 000293757000015ScopusID: 2-s2.0-80052044401OAI: oai:DiVA.org:kth-176526DiVA: diva2:918218
QC 201604212016-04-112015-11-072016-04-21Bibliographically approved