Surface plasmon mediated emission from metal/ZnO: an example for the fabrication of high brightness top-emitting light emitting diodes

H. C. Ong; D. Y. Lei; J. Li

doi:10.1117/12.713695

20 February 2007 Surface plasmon mediated emission from metal/ZnO: an example for the fabrication of high brightness top-emitting light emitting diodes

H. C. Ong, D. Y. Lei, J. Li

Author Affiliations +

Proceedings Volume 6474, Zinc Oxide Materials and Devices II; 64740V (2007) https://doi.org/10.1117/12.713695
Event: Integrated Optoelectronic Devices 2007, 2007, San Jose, California, United States

Abstract

In this study, we have attempted to enhance the forward emission from metal-capped ZnO mediated by surface plasmon (SP) cross coupling. By using metal alloys and dielectric grating, it is proposed that energy from ZnO can be resonantly coupled to metal/ZnO SPs, transferred to metal/grating SPs and then Bragg scattered to the free space. Although the experimental conditions are not yet been optimized, preliminary results from Al (30 nm) capped ZnO thin film show the forward/backward emission intensity ratio can be increased from 0.1 to 0.6 after the introduction of dielectric grating with periodicity of ~ 800nm on metal side. The ratio is compared favorably with the bare ZnO emission ratio of 0.5. It is thus believed SP cross coupling can be used for fabricating high brightness top-emitting light emitting diodes (LEDs).

Citation Download Citation

H. C. Ong, D. Y. Lei, and J. Li "Surface plasmon mediated emission from metal/ZnO: an example for the fabrication of high brightness top-emitting light emitting diodes", Proc. SPIE 6474, Zinc Oxide Materials and Devices II, 64740V (20 February 2007); https://doi.org/10.1117/12.713695

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