Enhanced luminescence and two-photon absorption of silver nano-clusters
2009 (English)In: Physica Status Solidi c, Vol. 6, no 0, S162-S166 p.Article in journal (Refereed) Published
Luminescence of silver nanoparticles photo-deposited on titan dioxide nanoparticles of mesoporous film is studied. Luminescence was registered under the two-photon excitation by femto-second laser pulses of Ti:sapphire laser. It was observed that Ag/ TiO2 mesoporous films have high concentration of bright luminescence spots which reveal stability to degradation under long illumination. Various configurations of silver nanoparticles are analyzed to explain the physics of bright luminescence spots ( hot spots). Luminescence intensity reveals hot spots dependence on the polarization of excitation laser pulse. Properties of Ag/TiO2 system can be useful for single molecule spectroscopy and visualization of biological objects. Aapplication of Ag/ TiO2 mesoporous films for Raman scattering spectroscopy de-menstruated for the case of Rhodamine B.
Place, publisher, year, edition, pages
2009. Vol. 6, no 0, S162-S166 p.
Engineering and Technology
IdentifiersURN: urn:nbn:se:liu:diva-50740DOI: 10.1002/pssc.200881361OAI: oai:DiVA.org:liu-50740DiVA: diva2:272055