Journal article
Surface plasmon coupling dynamics in InGaN/GaN quantum-well structures and radiative efficiency improvement
Department of Photonics Engineering, Technical University of Denmark1
Diode Lasers and LED Systems, Department of Photonics Engineering, Technical University of Denmark2
Tokyo University of Science3
Huazhong University of Science and Technology4
Chinese Academy of Sciences5
Light Extraction ApS6
Surface plasmonics from metal nanoparticles have been demonstrated as an effective way of improving the performance of low-efficiency light emitters. However, reducing the inherent losses of the metal nanoparticles remains a challenge. Here we study the enhancement properties by Ag nanoparticles for InGaN/GaN quantum-well structures.
By using a thin SiN dielectric layer between Ag and GaN we manage to modify and improve surface plasmon coupling effects, and we attribute this to the improved scattering of the nanoparticles at the quantum-well emission wavelength. The results are interpreted using numerical simulations, where absorption and scattering cross-sections are studied for different sized particles on GaN and GaN/SiN substrates.
Language: | English |
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Publisher: | Nature Publishing Group |
Year: | 2014 |
Pages: | 6392 |
ISSN: | 20452322 |
Types: | Journal article |
DOI: | 10.1038/srep06392 |
ORCIDs: | Fadil, Ahmed , Petersen, Paul Michael and Ou, Haiyan |