Gold nanosphere enhanced green and red fluorescence in ZnO: Al, Eu3

Gold nanosphere enhanced green and red fluorescence in ZnO: Al, Eu3

Gold nanoparticles can generate near field due to surface plasmon resonance (SPR) in the visible region. Such near field has the ability to enhance fluorescence of optimally proximal emitters. We have observed augmented green (intrinsic) and red (Eu3+) emission under UV excitation (375 nm) from an i...

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Veröffentlicht in:Applied physics letters 2014-12, Vol.105 (23)
Hauptverfasser: Bishnoi, Swati, Das, Rupali, Chawla, Santa
Format: Artikel
Sprache:eng
Schlagworte:
Applied physics
Emitters
Europium
Finite difference time domain method
Fluorescence
Gold
Nanoparticles
Nanospheres
Time domain analysis
Zinc oxide
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Zusammenfassung:Gold nanoparticles can generate near field due to surface plasmon resonance (SPR) in the visible region. Such near field has the ability to enhance fluorescence of optimally proximal emitters. We have observed augmented green (intrinsic) and red (Eu3+) emission under UV excitation (375 nm) from an important semiconductor ZnO:Al, Eu3+ when optimally conjugated with gold nanospheres. Local field generated by gold nanosphere (∼30 nm) is simulated through finite difference time domain method, and a direct correlation with fluorescence enhancement is established.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.4904014