Abstract
We propose a thin-film InSb-based thermoradiative system (TRS) and assess its performance characteristics by using a parametric design at low-grade waste heat. We consider the effects of several loss mechanisms on system performance, including optical, sub-gap radiation, and non-radiative losses. Our results predict that the 50 nm thick InSb TRS operating with a hot (cold) source at 500 K (300 K) may yield a power density of and an efficiency limit of 10.5%. To enhance the system performance, more efforts should be paid to optimize the layer thickness, enhance optical radiation, improve surface passivation, and fabricate an Ag back-reflective mirror and an optical filter for frequency-dependent photon recycling. This Letter provides new insights, to the best of our knowledge, for optimal designs and energy loss mechanisms, thus paving a route towards the development of practical TRS at a low temperature of around 500 K.
© 2019 Optical Society of America
Full Article | PDF ArticleMore Like This
Xin Zhang, Jianying Du, Jincan Chen, Lay Kee Ang, and Yee Sin Ang
Opt. Lett. 45(21) 5929-5932 (2020)
Tianjun Liao, Xin Zhang, Xiaohang Chen, Bihong Lin, and Jincan Chen
Opt. Lett. 42(16) 3236-3238 (2017)
Andreas Pusch, Michael P. Nielsen, Muhammad H. Sazzad, Peter J. Reece, and Nicholas J. Ekins-Daukes
Opt. Lett. 46(20) 5124-5124 (2021)