title: Suppression of the plasmon resonance in Au/CdS colloidal nanocomposites.
abstract: The nature of exciton-plasmon interactions in Au-tipped CdS nanorods has been investigated using femtosecond transient absorption spectroscopy. The study demonstrates that the key optoelectronic properties of composite heterostructures comprising electrically coupled metal and semiconductor domains are substantially different from those observed in systems with weak interdomain coupling. In particular, strongly coupled nanocomposites promote mixing of electronic states at semiconductor-metal domain interfaces, which causes a significant suppression of both plasmon and exciton excitations of carriers.
authors.affiliation: The Center for Photochemical Sciences, Bowling Green State University, Bowling Green, Ohio 43403, United States.
authors.forename: Elena
authors.initials: E
authors.lastname: Khon
authors.forename: Andrey
authors.initials: A
authors.lastname: Mereshchenko
authors.forename: Alexander N
authors.initials: AN
authors.lastname: Tarnovsky
authors.forename: Krishna
authors.initials: K
authors.lastname: Acharya
authors.forename: Anna
authors.initials: A
authors.lastname: Klinkova
authors.forename: Nishshanka N
authors.initials: NN
authors.lastname: Hewa-Kasakarage
authors.forename: Ian
authors.initials: I
authors.lastname: Nemitz
authors.forename: Mikhail
authors.initials: M
authors.lastname: Zamkov
mesh_terms: D019187:Cadmium Compounds / Q000737:chemistry*; D006046:Gold / Q000737:chemistry*; D008027:Light; D008422:Materials Testing; D049329:Nanostructures / Q000737:chemistry* / Q000648:ultrastructure*; D010316:Particle Size; D012542:Scattering, Radiation; D018036:Selenium Compounds / Q000737:chemistry*; D020349:Surface Plasmon Resonance / Q000379:methods*
chemical_list: D019187:Cadmium Compounds; D018036:Selenium Compounds; D006046:Gold; C058667:cadmium selenide