Semiconductor Thin Films Combined With Metallic Grating for Selective   Improvement of Thermal Radiative Absorption/Emission

doi:10.1115/1.3056599

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	Semiconductor Thin Films Combined With Metallic Grating for Selective Improvement of Thermal Radiative Absorption/Emission
	Fu, C. J. ; Tan, W. C.
刊名	journal of heat transfer transactions of the asme
	2009
关键词	elemental semiconductors metals photovoltaic cells semiconductor thin films silicon MULTILAYER STRUCTURES EMISSION LIGHT
DOI	10.1115/1.3056599
英文摘要	We propose in this work a structure of semiconductor thin films combined with a one-dimensional metallic grating, which allows for selective improvement of thermal radiative absorptivity (also emissivity) of the structure. Both shallow and deep gratings are considered in this work. Our numerical results obtained with a 2D rigorous coupled-wave analysis algorithm demonstrate that the proposed structure exhibits enhanced spectral absorptivity for photon energy slightly above the gap energy of the semiconductor (silicon in this work). Furthermore, the selectively improved absorptivity can be obtained in a wide range of incidence angles. As such, much smaller thickness of the semiconductor layer is required to absorb the same amount of high energy photons than in a conventional Si-based photovoltaic device. In addition, absorptivity for low energy photons in the new structure is lower due to the smaller semiconductor layer thickness. Therefore, the new structure may have potential applications in energy conversion devices.; Thermodynamics; Engineering, Mechanical; SCI(E); EI; 8; ARTICLE; 3; 1-8; 131
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/396660]
专题	工学院
推荐引用方式 GB/T 7714	Fu, C. J.,Tan, W. C.. Semiconductor Thin Films Combined With Metallic Grating for Selective Improvement of Thermal Radiative Absorption/Emission[J]. journal of heat transfer transactions of the asme,2009.
APA	Fu, C. J.,&Tan, W. C..(2009).Semiconductor Thin Films Combined With Metallic Grating for Selective Improvement of Thermal Radiative Absorption/Emission.journal of heat transfer transactions of the asme.
MLA	Fu, C. J.,et al."Semiconductor Thin Films Combined With Metallic Grating for Selective Improvement of Thermal Radiative Absorption/Emission".journal of heat transfer transactions of the asme (2009).