Performance analysis of near-field thermophotovoltaic devices considering absorption distribution

被引：265

作者：

Park, K. ^{[1
]}

Basu, S. ^{[1
]}

King, W. P. ^{[2
]}

Zhang, Z. M. ^{[1
]}

机构：

[1] Georgia Inst Technol, GW Woodruff Sch Mech Engn, Atlanta, GA 30332 USA

[2] Univ Illinois, Dept Mech Sci & Engn, Urbana, IL 61801 USA

来源：

JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER | 2008年 / 109卷 / 02期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1016/j.jqsrt.2007.08.022

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

This paper elucidates the energy transfer and conversion processes in near-field thermophotovoltaic (TPV) systems, considering local radiation absorption and photocurrent generation in the TPV cell. Radiation heat transfer in a multilayered structure is modeled using the fluctuation-dissipation theorem, and the electric current generation is evaluated based on the photogeneration and recombination of electron-hole pairs in different regions of the TPV cell. The effects of near-field radiation on the photon penetration depth, photocurrent generation, and quantum efficiency are examined in the spectral region of interest. The detailed analysis performed in the present work demonstrates that, while the near-field operation can enhance the power throughput, the conversion efficiency is not much improved and may even be reduced. Subsequently, a modified design of near-field TPV systems is proposed to improve the efficiency. (C) 2007 Elsevier Ltd. All rights reserved.

引用

页码：305 / 316

页数：12

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