Optical properties of InGaN/GaN multiquantum wells light-emitting diode with one-dimensional Au nanoparticle grating

作者：Tu Sheng Han; Ruan Da Ge; Tzeng Shien Der; Ni I Chi; Wang Chih Ming^*

来源：Journal of Nanophotonics, 2014, 8(1): 084097.

DOI：10.1117/1.JNP.8.084097

• surface plasmons
• subwavelength structures
• light-emitting diode

The polarization-dependent optical properties of InGaN/GaN multiquantum wells blue light-emitting diode with one-dimensional (1-D) plasmonic nanoparticles grating are investigated using an angle-resolved photoluminescence spectrometer. The light extraction efficiencies of the 1-D GaN grating coated with an Au layer and 1-D GaN grating coated with an Au nanoparticle monolayer are measured. It is shown that the light extraction efficiency of plasmonic nanoparticle grating coated with an Au nanoparticle monolayer is 1.4-fold higher than that of a 1-D GaN grating coated with Au film because the surface plasmon losses are conquered. In addition, the experimental dispersion of the surface plasmon (SP)-assisted light enhancement shows a good agreement with the dispersion of SP at the Au/GaN interface.

• 出版日期2014-6-25
• 单位东华大学