Plasmonic Resonance-Induced Effects on Stopband and Emission Characteristics of Dye-Doped Opals

Autor:	R. Vijaya, Dipak Rout
Rok vydání:	2014
Předmět:	Materials science business.industry Biophysics Physics::Optics Resonance Dielectric Stopband Biochemistry Crystal Reflection (mathematics) Optoelectronics Surface plasmon resonance business Plasmon Biotechnology Photonic crystal
Zdroj:	Plasmonics. 10:713-719
ISSN:	1557-1963 1557-1955
DOI:	10.1007/s11468-014-9857-2
Popis:	Three-dimensional colloidal photonic crystals containing a fluorophore, and fabricated by inward growing self-assembly method, are infiltrated with gold nanoparticles of 5-nm diameter. The effects of localized surface plasmon resonance of gold nanoparticles on the stopband of the photonic crystal are investigated by tuning the reflection band to overlap with the plasmonic band. Interestingly, reflection spectra of gold-infiltrated PhC show a clear suppression in the reflection band around the stopband center at higher angles of incidence due to the efficient coupling between the plasmon and photon modes inside the crystal. The resonant absorption appears only when there is a significant overlap between the stopband and the plasmonic resonance. The role of plasmonic resonance towards the enhancement of emission at the band edges is also discussed from the experimental results on the dielectric and metallo-dielectric photonic crystals.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::dba99007a3e489b1725d672606bbb07f https://doi.org/10.1007/s11468-014-9857-2 Zobrazit plný text záznamu Full text from SpringerLink