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RADIATIVE TRANSFER - V. Proceedings of the Fifth International Symposium on Radiative Transfer
June, 17-22, 2007, Bodrum, Turkey

DOI: 10.1615/ICHMT.2007.RadTransfProc


ISBN Print: 978-1-56700-243-0

ISSN Online: 2642-5629

ISSN Flash Drive: 2642-5661

PERFORMANCE ANALYSIS OF NEAR-FIELD THERMOPHOTOVOLTAIC DEVICES CONSIDERING ABSORPTION DISTRIBUTION

page 12
DOI: 10.1615/ICHMT.2007.RadTransfProc.270
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ABSTRAKT

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.

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