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首页> 外文期刊>Journal of Heat Transfer >Performance Analysis of a Near-Field Thermophotovoltaic Device With a Metallodielectric Selective Emitter and Electrical Contacts for the Photovoltaic Cell
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Performance Analysis of a Near-Field Thermophotovoltaic Device With a Metallodielectric Selective Emitter and Electrical Contacts for the Photovoltaic Cell

机译：具有金属电介质选择性发射极和电触点的光伏电池近场热光电器件的性能分析

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摘要

The photon transport and energy conversion of a near-field thermophotovoltaic (TPV) system with a selective emitter composed of alternate tungsten and alumina layers and a photovoltaic cell sandwiched by electrical contacts are theoretically investigated in this paper. Fluctuational electrodynamics along with the dyadic Green's function for a multi-layered structure is applied to calculate the spectral heat flux, and the photocurrent generation and electrical power output are solved from the photon-coupled charge transport equations. The tungsten and alumina layer thicknesses are optimized to obtain maximum electrical power output for bare TPV cell. The spectral heat flux is much enhanced when plain tungsten emitter is replaced with the multilayer emitter due to the effective medium intrinsic lossy property and additional surface plasmon polariton coupling in the tungsten thin film, for which the invalidity of effective medium theory to predict photon transport in the near field with multilayer emitters is discussed. Effects of a gold back reflector and indium tin oxide front coating with nanometer thickness, which could practically act as the electrodes to collect the photon-generated charges on the TPV cell, are explored. The conversion efficiency of 23.7% and electrical power output of 0.31 MW/m~2 can be achieved at a vacuum gap distance of 100 nm when the emitter and receiver temperature are, respectively, set as 2000 K and 300 K.
机译：本文从理论上研究了具有选择性发射极的近场热光电（TPV）系统的光子传输和能量转换，该选择性发射极由交替的钨和氧化铝层以及夹在电触点之间的光伏电池组成。将波动电动力学与多层结构的二进格林函数一起用于计算光谱热通量，并从光子耦合电荷传输方程求解光电流产生和电功率输出。优化钨和氧化铝层的厚度以获得裸TPV电池的最大电功率输出。由于钨薄膜中有效的介质固有损耗特性和附加的表面等离激元极化耦合，当用多层发射器代替普通钨发射体时，光谱热通量大大提高，有效介质理论无法预测光子在其中的传输。讨论了多层发射器的近场。探索了金背面反射器和纳米厚度的铟锡氧化物前涂层的作用，该涂层实际上可充当电极，以收集TPV电池上光子产生的电荷。当发射器和接收器的温度分别设置为2000 K和300 K时，在100 nm的真空间隙距离处可以实现23.7％的转换效率和0.31 MW / m〜2的电功率输出。

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  • 来源
    《Journal of Heat Transfer》 |2017年第5期|052701.1-052701.9|共9页
  • 作者

    Yue Yang; Jui-Yung Chang; Payam Sabbaghi; Liping Wang;

  • 作者单位

    School for Engineering of Matter, Transport, and Energy, Arizona State University, Tempe, AZ 85287;

    School for Engineering of Matter, Transport, and Energy, Arizona State University, Tempe, AZ 85287;

    School for Engineering of Matter, Transport, and Energy, Arizona State University, Tempe, AZ 85287;

    School for Engineering of Matter, Transport, and Energy, Arizona State University, Tempe, AZ 85287;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    near-field radiation; thermophotovoltaic; fluctuational electrodynamics; multilayer emitter;

    机译：近场辐射热光电波动电动力学多层发射体;

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