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首页> 美国卫生研究院文献>Molecules >Optimized Aluminum Reflector for Enhancement of UVC Cathodoluminescence Based-AlGaN Materials with Carbon Nanotube Field Emitters
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Optimized Aluminum Reflector for Enhancement of UVC Cathodoluminescence Based-AlGaN Materials with Carbon Nanotube Field Emitters

机译：优化铝反射器用于增强碳纳米管场发射器的基于UVC阴极发光的UVC阴极发光

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摘要

The far ultraviolet C (UVC) light sources based on carbon nanotube (CNT) field emitters as excitation sources have become promising light sources for sterilization, disinfection, and water purification. However, the low light extraction efficiency of UVC–CNT light sources still hinders the practical application of these structures. Herein, we report an optimized aluminum (Al) reflector to enhance the light extraction efficiency of UVC–CNT light sources. Optical analysis of UVC-CNT light sources covered by the Al reflectors with various thicknesses ranging from 30 to 150 nm was performed to realize the optimized reflector. The UVC-CNT light sources exhibit the highest light extraction efficiency when the Al reflector layer has an optimized thickness of 100 nm. For comparison, the cathodoluminescence (CL) spectra were recorded for UVC–CNT light sources with and without the optimized Al reflector. The measured light output power and the estimated power efficiency of the UVC–CNT light-source-tube with Al reflector were enhanced by about 27 times over the reference. This enhancement is mainly attributed to the outstanding reflection effect of the Al reflector.
机译：基于碳纳米管（CNT）场发射器的远紫外线C（UVC）光源作为激发源已成为灭菌，消毒和净水的有希望的光源。然而，UVC-CNT光源的低光提取效率仍然阻碍了这些结构的实际应用。这里，我们报告了优化的铝（Al）反射器，以增强UVC-CNT光源的光提取效率。通过30至150nm的各种厚度覆盖的UVC-CNT光源的光学分析进行了5至150nm，实现了优化的反射器。当Al反射器层具有100nm的优化厚度时，UVC-CNT光源具有最高的光提取效率。为了比较，记录带有和没有优化的Al反射器的UVC-CNT光源的阴极发光（CL）光谱。通过参考，测量的光输出功率和UVC-CNT光源管的UVC-CNT光源管的估计功率效率提高了约27倍。这种增强主要归因于Al反射器的出色反射效果。

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