Pushing the Limits of Thermophotovoltaic Efficiency

Myles Steiner, Zunaid Omair, Gregg Scranton, Luis Pazos-Outon, T. Xiao, Per Peterson, John Holzrichter, Eli Yablonovitch

Research output: Contribution to conferencePaperpeer-review


We report power conversion efficiency of ∼28% from a thermophotovoltaic device, employing the concept of photon regeneration. The regeneration is accomplished using photovoltaic band-edge as the spectral filter. This high efficiency is a direct consequence of enhanced sub-bandgap reflectivity of the device used. Our detail theoretical analysis shows that with further improvement in device geometry and material, it would be possible to achieve near 45% power conversion efficiency.

Original languageAmerican English
Number of pages3
StatePublished - 26 Nov 2018
Event7th IEEE World Conference on Photovoltaic Energy Conversion, WCPEC 2018 - Waikoloa Village, United States
Duration: 10 Jun 201815 Jun 2018


Conference7th IEEE World Conference on Photovoltaic Energy Conversion, WCPEC 2018
Country/TerritoryUnited States
CityWaikoloa Village

Bibliographical note

Publisher Copyright:
© 2018 IEEE.

NREL Publication Number

  • NREL/CP-5900-73728


  • InGaAs
  • photon regeneration
  • thermophotovoltaics


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