材料科学
光电子学
发光二极管
紫外线
蓝宝石
二极管
光子学
光子晶体
紫外线
基质(水族馆)
光学
激光器
物理
海洋学
地质学
作者
Biaomin Li,Shihong Xia,Wei Guo,Xi Yang,Yuheng Zeng,Zhefan Yuan,Jichun Ye
出处
期刊:Research Square - Research Square
日期:2023-10-29
标识
DOI:10.21203/rs.3.rs-3491123/v1
摘要
Abstract Herein, we focus on the performance optimization of inclined sidewall (IS) type ultraviolet (UV) light-emitting diodes (LEDs) with either nanopatterned sapphire substrates (NPSSs) or photonic crystals (PCs). The simulation results demonstrate the introduction of substrate patterning plays a crucial role in unlocking the potential of IS type UV LEDs by reducing the generation of high mode resonance within the device. The use of NPSSs design performs exceptionally well in extracting transverse-magnetic (TM) polarized light due to its superior alignment with the inclination design. As a result, the total light extraction efficiencies (LEEs) are significantly improved, increasing from 36.0–57.3%.
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