粗糙表面非极性辐射器近场热光伏系统性能

李松; 赵军明; 刘林华

doi:10.19912/j.0254-0096.tynxb.2024-0073

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太阳能学报 ›› 2025, Vol. 46 ›› Issue (5) : 293-301. DOI: 10.19912/j.0254-0096.tynxb.2024-0073

粗糙表面非极性辐射器近场热光伏系统性能

李松¹, 赵军明^1,2, 刘林华³

作者信息 +

PERFORMANCE OF NEAR-FIELD THERMOPHOTOVOLTAIC SYSTEM WITH ROUGH SURFACE NON-POLARIZED EMITTER

Li Song¹, Zhao Junming^1,2, Liu Linhua³

Author information +

文章历史 +

摘要

研究粗糙表面效应对由非极性辐射器石墨以及砷化铟（InAs）电池构成的近场热光伏系统性能的影响,分析其中的系统性能与辐射换热过程、光电转换过程的量化关系。针对辐射换热过程,利用等效多层近似法以及涨落电动力学求得不同粗糙度下的辐射换热量。对于光电转换过程,使用解析近似法获得系统的功率密度及效率。分析表明,一定的表面粗糙度可提升系统的性能,在50~200 nm的平均距离下,5 nm以内的粗糙度最多能提升10.7%的功率密度以及1.5%的效率。

Abstract

Roughness is inevitable in the manufacturing of thermophotovoltaic （TPV） systems. In near-field TPV system, the near-field radiative heat transfer （NFRHT） between the emitter and photovoltaic （PV） cell is primarily governed by surface waves, which are closely associated with the shallow surface region and highly susceptible to the influence of rough surfaces. This work investigates the impact of rough surfaces on the performance of near-field TPV systems composed of a non-polarized emitter （graphite） and indium arsenide （InAs） cell. The quantitative relationship between system performance and NFRHT, as well as the photoelectric conversion, is analyzed. For the radiative heat transfer, the equivalent multilayer approximation method and fluctuation electrodynamics are emploved to analyze NFRHT under varying roughness. For the photoelectric conversion, an analytical approximation method is employed to obtain the power density and efficiency. The result reveals that a certain level of surface roughness improves system performance. For an average distance of 50~200 nm, surface roughness within 5 nm can increase the power density by up to 10.7% and efficiency by 1.5%. This study deepens the understanding of the effect of rough surface on near field TPV system.

导出引用

李松, 赵军明, 刘林华. 粗糙表面非极性辐射器近场热光伏系统性能[J]. 太阳能学报. 2025, 46(5): 293-301 https://doi.org/10.19912/j.0254-0096.tynxb.2024-0073

Li Song, Zhao Junming, Liu Linhua. PERFORMANCE OF NEAR-FIELD THERMOPHOTOVOLTAIC SYSTEM WITH ROUGH SURFACE NON-POLARIZED EMITTER[J]. Acta Energiae Solaris Sinica. 2025, 46(5): 293-301 https://doi.org/10.19912/j.0254-0096.tynxb.2024-0073

中图分类号： TM615

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