Comparison of surface plasmon polariton characteristics of Ag- and Au-based InGaN/GaN nanocolumn plasmonic crystals
Comparison of surface plasmon polariton characteristics of Ag- and Au-based InGaN/GaN nanocolumn plasmonic crystals
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DOI：
10.35848/1882-0786/ac2632
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发表时间：
2021-09
影响因子：
2.3
通讯作者：
T. Oto;Masato Namazuta;Shotaro Hayakawa;K. Okamoto;R. Togashi;K. Kishino
中科院分区：
文献类型：
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作者：
T. Oto;Masato Namazuta;Shotaro Hayakawa;K. Okamoto;R. Togashi;K. Kishino
我们表征了 InGaN/GaN 纳米柱 (NC) 阵列与银基和金基等离激元晶体 (PlC) 中的表面等离激元极化子 (SPP) 耦合。在 Ag 基和 Au 基 NC-PLC 中，驻波 SPP 增强了 InGaN/GaN NC 阵列的光发射。时域有限差分计算再现了光致发光增强率和SPP共振波长实验结果的总体趋势。对于Ag基NC-PlC来说，可以获得更强的电场强度，并且可以在很宽的波长范围内控制SPP共振。因此，Ag基NC-PlCs可以在可见光区域实现显着的发射增强。
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.