D103 Thermophotovoltaic Generation of Electricity by GaSb Cell using Evanescent Wave Effect

芦田, 友祐; 吉田, 淳; 花村, 克悟

doi:10.1299/jsmepes.2012.17.113

The Proceedings of the National Symposium on Power and Energy Systems

2012

DOI: 10.1299/jsmepes.2012.17.113

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D103 Thermophotovoltaic Generation of Electricity by GaSb Cell using Evanescent Wave Effect

友祐芦田¹,

淳吉田²,

克悟花村³

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“…Whale and Cravalho 13 14 suggested that direct thermal-to-electrical energy conversion via thermophotovoltaic (TPV) power generators could benefit from the near-field effects of thermal radiation by spacing the radiator and the cell by a sub-wavelength vacuum gap. Since then, a few groups analyzed nanoscale-gap TPV (nano-TPV) power generators theoretically 15 16 17 18 19 20 21 22 23 24 25 and experimentally 26 27 28 29 30 31 .…”

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Impacts of propagating, frustrated and surface modes on radiative, electrical and thermal losses in nanoscale-gap thermophotovoltaic power generators

Bernardi

Dupré

Blandre

et al. 2015

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The impacts of radiative, electrical and thermal losses on the performances of nanoscale-gap thermophotovoltaic (nano-TPV) power generators consisting of a gallium antimonide cell paired with a broadband tungsten and a radiatively-optimized Drude radiator are analyzed. Results reveal that surface mode mediated nano-TPV power generation with the Drude radiator outperforms the tungsten radiator, dominated by frustrated modes, only for a vacuum gap thickness of 10 nm and if both electrical and thermal losses are neglected. The key limiting factors for the Drude- and tungsten-based devices are respectively the recombination of electron-hole pairs at the cell surface and thermalization of radiation with energy larger than the cell absorption bandgap. A design guideline is also proposed where a high energy cutoff above which radiation has a net negative effect on nano-TPV power output due to thermal losses is determined. It is shown that the power output of a tungsten-based device increases by 6.5% while the cell temperature decreases by 30 K when applying a high energy cutoff at 1.45 eV. This work demonstrates that design and optimization of nano-TPV devices must account for radiative, electrical and thermal losses.

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mentioning

confidence: 99%

Impacts of propagating, frustrated and surface modes on radiative, electrical and thermal losses in nanoscale-gap thermophotovoltaic power generators

Bernardi

Dupré

Blandre

et al. 2015

Sci Rep

View full text Add to dashboard Cite

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D103 Thermophotovoltaic Generation of Electricity by GaSb Cell using Evanescent Wave Effect

Cited by 1 publication

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Impacts of propagating, frustrated and surface modes on radiative, electrical and thermal losses in nanoscale-gap thermophotovoltaic power generators

Impacts of propagating, frustrated and surface modes on radiative, electrical and thermal losses in nanoscale-gap thermophotovoltaic power generators

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