Thermophotovoltaic emitters based on a two-dimensional grating/thin-film nanostructure
Thermophotovoltaic emitters based on a two-dimensional grating/thin-film nanostructure
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基于二维光栅/薄膜纳米结构的热光伏发射器
DOI：
10.1016/j.ijheatmasstransfer.2013.08.047
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发表时间：
2013-12
影响因子：
5.2
通讯作者：
Yong Shuai
中科院分区：
文献类型：
--
作者：
Bo Zhao;Liping Wang;Yong Shuai
热光伏（TPV）器件可以将热辐射直接转化为电能。为了提高TPV系统的效率，波长选择性发射器被设计成从各种热源获取热能，然后向TPV电池发射光子。提出了一种二维光栅/薄膜纳米结构作为一种有效的发射器，其性能通过表面等离子体激元（SPPs）和磁极化激元（MP）的激发来增强。严格的耦合波分析用于预测发射度以及电磁场和电流密度分布。所提出的纳米结构的法向发射率被证明是波长选择性和偏振不敏感。在不同的偏振的纳米结构中的SPP和MP激发的机制阐明。电流密度环进一步证实了磁共振的存在。此外，方位角和极角对发射率谱的影响也进行了研究，表明所提出的结构不仅在法向方向上，而且在大的倾斜角具有高的发射率。
Thermophotovoltaic (TPV) devices can convert thermal radiation directly into electricity. To improve the efficiency of TPV systems, wavelength-selective emitters are designed to take thermal energy from various heat sources and then emit photons to the TPV cells. A two-dimensional grating/thin-film nanostructure is proposed as an efficient emitter, whose performance is enhanced by the excitations of both surface plasmon polaritons (SPPs) and magnetic polaritons (MPs). Rigorous coupled-wave analysis is used to predict the emittance as well as the electromagnetic field and current density distributions. The normal emittance of the proposed nanostructure is shown to be wavelength-selective and polarization-insensitive. The mechanisms of SPP and MP excitations in the nanostructure are elucidated for different polarizations. The current–density loop further confirms the existence of magnetic resonances. Furthermore, the effect of azimuthal and polar angles on the emittance spectra is also investigated, suggesting that the proposed structure has high emittance not only in the normal direction but also at large oblique angles.
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影响因子：
3.8
作者：
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通讯作者：
N. Nguyen-Huu;Yu-Bin Chen;Y. Lo
影响因子：
3.7
作者：
V. Teofilo;P. Choong;J. Chang;Y. Tseng;S. Ermer
通讯作者：
V. Teofilo;P. Choong;J. Chang;Y. Tseng;S. Ermer
影响因子：
3.8
作者：
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通讯作者：
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影响因子：
3.7
作者：
A. Narayanaswamy;Gang Chen
通讯作者：
A. Narayanaswamy;Gang Chen
基于多尺寸纳米天线的薄膜宽带吸收体
影响因子：
4
作者：
Cui, Yanxia;Xu, Jun;Fang, Nicholas X.
通讯作者：
Fang, Nicholas X.