Please use this identifier to cite or link to this item: https://doi.org/10.1364/OE.20.014556
Title: Enhancement of bandgap emission of Pt-capped MgZnO films: Important role of light extraction versus exciton-plasmon coupling
Authors: Yang, W.F. 
Xie, Y.N.
Liao, R.Y.
Sun, J.
Wu, Z.Y.
Wong, L.M.
Wang, S.J.
Wang, C.F.
Lee, A.Y.S.
Gong, H. 
Issue Date: 18-Jun-2012
Source: Yang, W.F., Xie, Y.N., Liao, R.Y., Sun, J., Wu, Z.Y., Wong, L.M., Wang, S.J., Wang, C.F., Lee, A.Y.S., Gong, H. (2012-06-18). Enhancement of bandgap emission of Pt-capped MgZnO films: Important role of light extraction versus exciton-plasmon coupling. Optics Express 20 (13) : 14556-14563. ScholarBank@NUS Repository. https://doi.org/10.1364/OE.20.014556
Abstract: We present on a systematic study of the contribution of surface plasmon (SP) coupling and light extraction toward emission enhancement of Platinum (Pt) nano-patterns capped MgZnO films. Time resolved Photoluminescence (PL) results indicate that the Pt coating can greatly reduces the non-radiative recombination rate by passivation of surface states, making the decay slow down. Temperature dependence of the integrated photoluminescence intensity reveals that the Pt nano-patterns can offer a large amount of light transfer and scattering, which enormously increase the light extraction efficiency up to 3.8-fold. These results indicate that the increased light extraction efficiency caused by surface modification via Pt coating rather than SP coupling plays a dominant role in increasing bandgap emission of MgZnO film. © 2012 Optical Society of America.
Source Title: Optics Express
URI: http://scholarbank.nus.edu.sg/handle/10635/64866
ISSN: 10944087
DOI: 10.1364/OE.20.014556
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