Platform for Accurate Efficiency Quantification of > 35% Efficient Thermophotovoltaic Cells

Tarun Narayan, Dustin Nizamian, Cecelia Luciano, Benjamin Johnson, Moritz Limpinsel, Alexandra Young, Justin Briggs, Leah Kuritzky, Andrew Ponec, Emmett Perl, Brendan Kayes, Eric Tervo, Madhan Arulanandam, Ryan France, Richard King, Myles Steiner, David Bierman

Research output: Contribution to conferencePaperpeer-review

7 Scopus Citations


Thermophotovoltaic (TPV) devices convert thermal radiation directly into electricity using semiconductor diodes and have a variety of uses from waste heat recovery to energy storage to primary power conversion. Recent results have demonstrated promising cells nearing and surpassing 30% conversion efficiency. As TPV cells continue to increase in efficiency, they become attractive for a wider range of applications. Their efficiencies must be quantified in a standardized fashion to compare results accurately across research groups. Here, we outline and quantify the most important characteristics of an accurate and precise TPV efficiency measurement. Using a custom-built measurement apparatus that takes these characteristics into account, we report 19 cells with greater than 30% conversion efficiency and 2 cells with greater than 35% conversion efficiency. This confirms that our reported cell efficiencies are not simply those of hero cells but rather of a distribution of cells that can be produced in a consistent, high-quality process.

Original languageAmerican English
Number of pages3
StatePublished - 20 Jun 2021
Event48th IEEE Photovoltaic Specialists Conference, PVSC 2021 - Fort Lauderdale, United States
Duration: 20 Jun 202125 Jun 2021


Conference48th IEEE Photovoltaic Specialists Conference, PVSC 2021
Country/TerritoryUnited States
CityFort Lauderdale

Bibliographical note

Publisher Copyright:
© 2021 IEEE.

NREL Publication Number

  • NREL/CP-5900-80552


  • III-V
  • InGaAs
  • thermal energy storage
  • thermophotovoltaics
  • TPV efficiency


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