Surface-plasmon-polariton assisted modification of spontaneous emission of colloidal quantum dots in metal nanostructures

We experimentally demonstrate extraordinary optical transmission (EOT) assisted photoluminescence (PL) of CdSe/CdS colloidal quantum dots (QDs). The quantum dots were encapsulated between a metallic nanostructure and a Bragg reflector to enhance the interaction of spontaneously emitted photons with...

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Veröffentlicht in:Applied physics letters 2013-01, Vol.102 (2)
Hauptverfasser: Briscoe, Jayson L., Jayasundara, Nadeepa, Cho, Sang-Yeon
Format: Artikel
Sprache:eng
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Zusammenfassung:We experimentally demonstrate extraordinary optical transmission (EOT) assisted photoluminescence (PL) of CdSe/CdS colloidal quantum dots (QDs). The quantum dots were encapsulated between a metallic nanostructure and a Bragg reflector to enhance the interaction of spontaneously emitted photons with a resonant electromagnetic surface wave. The measured PL spectrum of the fabricated sample exhibits spectral narrowing and a shift in peak wavelength of 22 nm and 7 nm, respectively. Furthermore, we tested the angular dependence of the signal to confirm the existence of EOT. This demonstration is a critical step towards realizing plasmonic colloidal QD based coherent emitters.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.4776736