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

Swati Bishnoi | Zendy; Rupali Das | Zendy; Santa Chawla | Zendy

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

Author(s) -

Swati Bishnoi,

Rupali Das,

Santa Chawla

Publication year - 2014

Publication title -

applied physics letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.182

H-Index - 442

eISSN - 1077-3118

pISSN - 0003-6951

DOI - 10.1063/1.4904014

Subject(s) - fluorescence , surface plasmon resonance , materials science , colloidal gold , plasmon , excitation , surface plasmon , optoelectronics , semiconductor , nanoparticle , nanotechnology , analytical chemistry (journal) , chemistry , optics , physics , quantum mechanics , chromatography

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.

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