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.

我们表征了 InGaN/GaN 纳米柱 (NC) 阵列中的表面等离子体激元 (SPP) 耦合与 Ag 和 Au 基等离子体晶体 (PlC)。在 Ag 和 Au 基 NC-PlC 中，驻波 SPP 增强了 InGaN/GaN NC 阵列的光发射。有限差分时域计算再现了光致发光增强比和 SPP 共振波长的实验结果的总体趋势。对于基于 Ag 的 NC-PlC，获得了更强的电场强度，并且可以在很宽的波长范围内控制 SPP 共振。因此，对于基于银的 NC-PlC，可以实现可见光区域的显着发射增强。