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Graded-index structures for high-efficiency solar thermophotovoltaic emitting surfaces

机译:高效太阳能热光电发射表面的渐变折射率结构

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摘要

This Letter presents a highly efficient emitter structure for solar thermophoto voltaic systems. The structure consists of a graded index on tungsten, shows a spectral efficiency of 59%, or 70% with the use of a back reflector, and is compared to other state-of-the-art emitter structures. The effects of different structures and periodicities on the efficiency of the emitter are explored, as well as the effect of a protective oxide coating. The causes of the antireflection properties of these structures are also explored.
机译:这封信提出了一种用于太阳能热光伏打系统的高效发射器结构。该结构由钨上的渐变折射率组成,显示光谱效率为59%,或者使用后反射镜,显示效率为70%,并且与其他最新的发射器结构进行了比较。探索了不同结构和周期性对发射极效率的影响,以及保护性氧化物涂层的影响。还探讨了这些结构的抗反射性能的原因。

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