Evaluating potential power output of terrestrial thermoradiative diodes with atmospheric modeling

IF 4.6 2区综合性期刊 Q1 MULTIDISCIPLINARY SCIENCES

iScience Pub Date : 2024-11-09 DOI:10.1016/j.isci.2024.111346

Jamie A. Harrison , Phoebe M. Pearce , Fei Yang , Michael P. Nielsen , Helen E. Brindley , Nicholas J. Ekins-Daukes

引用次数: 0

Abstract

A thermoradiative diode is a device that can generate power through thermal emission from the warm Earth to the cold night sky. Accurate assessment of the potential power output requires knowledge of the downwelling radiation from the atmosphere. Here, accurate modeling of this radiation is used alongside a detailed balance model of a diode at the Earth’s surface temperature to evaluate its performance under nine different atmospheric conditions. In the radiative limit, these conditions yield power densities between 0.34 and 6.5 W.m⁻², with optimal bandgaps near 0.094 eV. Restricting the angles of emission and absorption to less than a full hemisphere can marginally increase the power output. Accounting for non-radiative processes, we suggest that if a 0.094 eV device would have radiative efficiencies more than two orders of magnitude lower than a diode with a bandgap near 0.25 eV, the higher bandgap material is preferred.

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利用大气建模评估地面热辐射二极管的潜在功率输出

热辐射二极管是一种可以通过从温暖的地球向寒冷的夜空发射热辐射来发电的装置。要准确评估潜在的功率输出，需要了解大气层的下沉辐射。在此，我们将这种辐射的精确建模与地球表面温度下二极管的详细平衡模型结合使用，以评估其在九种不同大气条件下的性能。在辐射极限条件下，这些条件产生的功率密度在 0.34 到 6.5 W.m-2 之间，最佳带隙接近 0.094 eV。将发射角和吸收角限制在小于一个完整半球的范围内，可以略微提高功率输出。考虑到非辐射过程，我们建议，如果 0.094 eV 器件的辐射效率比带隙接近 0.25 eV 的二极管低两个数量级以上，则优先选择带隙较高的材料。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

iScience Multidisciplinary-Multidisciplinary

CiteScore

7.20

自引率

1.70%

发文量

1972

审稿时长

6 weeks

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