论文标题
基于双环形钛合金谐振器
High-Temperature Ultra-Broad UV-MIR High-Efficiency Absorber Based on Double Ring-Shaped Titanium Nitride Resonators
论文作者
论文摘要
提出并研究了可以在高温下起作用的双环形钛（TIN）纳米装饰物的超子吸收器，并进行了数值研究。具有一些最佳参数的吸收剂在200-4000 nm（从紫外线到中红外）的平均吸收率为94.6％，并且带有200-3518 nm的频带，吸收> 90％。我们已经详细介绍了超大型吸收的物理机制，包括锡材料本身在较短的波长和等离激元共振的介电损耗特性和较长波长中锡纳米谐振器的金属特性引起的。此外，吸收器显示独立和广角的两极分化。在200-2860 nm波段时，另一个具有不同高度的双锡纳米环的吸收剂具有平坦的和更高的吸收效率（超过95％的吸收）。这些特性使提出的基于锡的吸收剂在许多应用中具有巨大的潜力，例如光捕获，光伏，热发射器。
An ultrabroad absorber based on double-ring-shaped titanium nitride (TiN) nanoresonators, which can work in high temperatures, is proposed and numerically studied. The absorber with some optimal parameters exhibits an averaged absorption of 94.6% in the range of 200 - 4000 nm (from ultraviolet to mid-infrared) and a band from 200 - 3518 nm having an absorption > 90%. We have demonstrated in detail the physical mechanisms of the ultra-broad absorption, including the dielectric lossy property of TiN material itself in shorter wavelengths and plasmonic resonances caused by the metallic property of TiN nano-resonators in longer wavelengths. In addition, the absorber shows polarization independent and wide-angle acceptance. Another absorber with double TiN nano-rings of different heights has flatter and higher absorption efficiency (more than 95% absorption) at 200-2860 nm waveband. These properties make the proposed absorbers based on TiN has great potentials in many applications, such as light trapping, photovoltaics, thermal emitters.
