Double-metallic Au/Ag layers deposited on top of InGaN/GaN quantum wells (QWs) are used to tune the Purcell peak enhancement of the radiative recombination rate for nitride light-emitting diodes. By modifying the Au/Ag thicknesses, the Purcell factor can be widely tuned between the surface plasmon frequencies of Au/GaN and Ag/GaN. Photoluminescence studies demonstrated the concept of the Purcell factor tuning by using the double-metallic Au/Ag layers.
Surface plasmon dispersion engineering via double-metallic Au/Ag layers for III-nitride based light-emitting diodes
Hongping Zhao, Jing Zhang, Guangyu Liu, Nelson Tansu; Surface plasmon dispersion engineering via double-metallic Au/Ag layers for III-nitride based light-emitting diodes. Appl. Phys. Lett. 11 April 2011; 98 (15): 151115. https://doi.org/10.1063/1.3580628
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