极化子
辐射传输
热光电伏打
表面声子
共发射极
热辐射
材料科学
声子
凝聚态物理
辐射通量
电介质
焊剂(冶金)
领域(数学)
光电子学
联轴节(管道)
物理
光学
复合材料
热力学
冶金
数学
纯数学
作者
Mathieu Francoeur,M. Pınar Mengüç,Rodolphe Vaillon
摘要
We investigate near-field thermal radiation between a nanometric film and a bulk SiC using fluctuational electrodynamics. Results show a narrow spectral band enhancement of the radiative flux for nanometric emitters due to coupling of surface phonon polaritons inside the film. For a 10nm thick SiC emitter, the total radiative flux is 2.2 times larger than for a bulk emitter. The total radiative flux is increased by a factor of 3.3 if a dielectric is coated with a 10nm SiC film due to a splitting of the resonant frequency into two distinct ones, which has practical interests for near-field thermophotovoltaic devices.
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