基于氮化镓的高亮度、宽调制带宽红光微型发光二极管与等离子体光栅集成。
High brightness and broad modulation bandwidth InGaN-based red micro-LEDs integrated with plasmonic gratings.
出版信息
Opt Lett. 2022 Nov 1;47(21):5485-5488. doi: 10.1364/OL.472236.
We propose red micro-LEDs integrated with plasmonic gratings, which demonstrate high efficiency and broad modulation bandwidth. The Purcell factor and external quantum efficiency (EQE) for an individual device can be improved up to 5.1 and 11%, respectively, due to the strong coupling between surface plasmons and multiple quantum wells. The cross talk effect between adjacent micro-LEDs can be efficiently alleviated as well, thanks to the high-divergence far-field emission pattern. Moreover, the 3-dB modulation bandwidth of the designed red micro-LEDs is predicted to be ∼ 528 MHz. Our results can be used to design high-efficiency and high-speed micro-LEDs for the applications of advanced light display and visible light communication.
我们提出了集成等离子体光栅的红色微型 LED，其展示了高效率和宽调制带宽。由于表面等离激元和多量子阱之间的强耦合，单个器件的荧光因子和外量子效率（EQE）可分别提高至 5.1 和 11%。此外，由于远场发射模式具有高发散度，相邻微型 LED 之间的串扰效应也可以得到有效缓解。此外，所设计的红色微型 LED 的 3-dB 调制带宽预计约为 528MHz。我们的研究结果可用于设计高效率和高速的微型 LED，以应用于先进的光显示和可见光通信。
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