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Tunable plasmonic resonance in wide wavelength range for smart photonic and optoelectronic applications

机译：适用于智能光子和光电应用的宽波长范围内的可调等离子体共振

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Surface plasmon (SP) resonance with light waves and/or excitons can be used to enhance the emission efficiencies of light-emitting materials and devices. This approach was experimentally demonstrated by our group for enhancing the visible emission from InGaN/GaN quantum wells (QWs). Exciton-SP coupling increases the spontaneous emission rates of the excited states, causes a relative reduction in nonradiative relaxation, and ultimately increases the internal quantum efficiencies (IQEs) of such devices. This method has the potential to enable the development of high-efficiency light-emitting diodes (LEDs), eventually leading to the replacement of fluorescent lights with solid-state light sources. Next important challenge is to extend this method into UV and IR wavelength regions. We found that Al is very useful for wider tuning of the plasmonic resonance from the deep UV to the visible wavelength region. The plasmonic tuning at the IR regions were also discussed by using tantalum nanoparticle. These tunable plasmonics over the UV-IR range should bring new possibilities of applications to plasmonics and lead to new class of several smart photonic and optoelectronic applications.
机译：与光波和/或激子的表面等离子体激元（SP）共振可用于增强发光材料和器件的发射效率。我们的小组已通过实验证明了该方法可增强InGaN / GaN量子阱（QW）的可见光发射。激子-SP耦合增加了激发态的自发发射速率，引起非辐射弛豫的相对减少，并最终增加了此类器件的内部量子效率（IQE）。该方法具有开发高效发光二极管（LED）的潜力，最终导致用固态光源代替荧光灯。下一个重要挑战是将该方法扩展到UV和IR波长区域。我们发现，铝对于从深紫外线到可见光波长区域的等离子共振的更宽调谐非常有用。还通过使用钽纳米粒子讨论了IR区域的等离子调谐。这些在UV-IR范围内可调的等离激元将为等离激元带来新的应用可能性，并导致出现几类智能光子和光电应用的新类别。

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