Journal
APPLIED PHYSICS EXPRESS
Volume 14, Issue 10, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.35848/1882-0786/ac2632
Keywords
plasmonic crystal; nanocolumn; nanowire; InGaN; surface plasmon polariton
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Funding
- JSPS LEADER
- JSPS KAKENHI [17K18110, 19H04533, 19H00874]
- Research Foundation for Opto-Science and Technology
- Grants-in-Aid for Scientific Research [19H04533, 19H00874, 17K18110] Funding Source: KAKEN
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The study found that using Ag and Au-based plasmonic crystals (PlCs) in InGaN/GaN nanocolumn arrays can enhance light emission, with resonance occurring in the visible light region. Calculations showed that the SPP resonance wavelength in Ag-based NC-PlCs can be controlled, leading to stronger electric field intensity over a wide range of wavelengths.
We characterized surface plasmon polariton (SPP) coupling in InGaN/GaN nanocolumn (NC) arrays with Ag- and Au-based plasmonic crystals (PlCs). In both the Ag- and Au-based NC-PlCs, the standing wave SPPs enhanced the light emission from the InGaN/GaN NC arrays. The finite-difference time-domain calculations reproduced the general tendency of the experimental results for the photoluminescence enhancement ratio and SPP resonant wavelength. For the Ag-based NC-PlCs, a stronger electric field intensity was obtained, and the SPP resonance could be controlled over a wide range of wavelengths. Therefore, significant emission enhancement in the visible light region can be realized for the Ag-based NC-PlCs.
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