Abstract
The tunable hybridized quadrupole plasmons and their strong coupling with excitons have been demonstrated in ZnMgO/Ag nanoclusters (NCs) system. By adjusting the density of the random Ag NCs, the hybridized quadrupole resonance with strong intensity can be obtained due to the asymmetry Fano-like interference. Owing to a good energy match between hybridized quadrupole plasmons and excitons of ZnMgO, a giant near-band-edge UV emission enhancement was realized. The finite difference time-domain method was used to demonstrate the formation of the tunable hybridized quadrupole resonance in the short wavelength range. This novel method for enhancing the UV emission, associated with the hybridized quadrupole plasmons, may pave the way for the further development of high-efficiency UV light-emitting diodes and laser diodes.
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