材料科学
等离子体子
折射率
光电探测器
光电子学
平面的
吸收率
光子学
光学
窄带
吸收(声学)
超材料
红外线的
计算机科学
物理
计算机图形学(图像)
反射率
复合材料
作者
So Hee Kim,Joo Hwan Ko,Young Jin Yoo,Min Seok Kim,Gil Ju Lee,Satoshi Ishii,Young Min Song
标识
DOI:10.1002/adom.202102388
摘要
Abstract As a powerful planar plasmonics, Tamm plasmon (TP) structures open up new possibilities for high‐efficiency photonic applications demanding high quality (Q)‐factor with scalability and spectral tunability. Despite the theoretical advantages of TP structures, TP configurations alternately stacked within limited materials and integer ranges result in thicker device sizes and still struggle to achieve ideal designs. Here, by introducing a computational model with varying design parameters, the configurations of high‐performance TPs are presented within thin scale. However, the optimized configuration is hard to be realized with limited conventional materials. In this study, the effective refractive index is tailored through porosity change to achieve optimized design parameters, resulting in high Q‐factors (≈45) and near‐unity absorptance (≈99%) for sub‐micron scale TPs (≈0.7 µm) based on single material. To verify single‐material TPs (SMTPs), the real and imaginary parts of the optical impedances are calculated, which are well matching each other, resulting in unity absorption. Using the designed structure, SMTPs are experimentally fabricated based on glancing angle deposition. As a practical demonstration, SMTPs are combined with a metal–semiconductor–metal photodetector as an ultra‐sensitive narrowband photodetector.
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