Skip to main navigation Skip to search Skip to main content

Quaternary InGaAsSb thermophotovoltaic diodes

  • Michael W. Dashiell
  • , John F. Beausang
  • , Hassan Ehsani
  • , G. J. Nichols
  • , David M. Depoy
  • , Lee R. Danielson
  • , Phil Talamo
  • , Kevin D. Rahner
  • , Edward J. Brown
  • , Steven R. Burger
  • , Patrick M. Fourspring
  • , William F. Topper
  • , P. F. Baldasaro
  • , Christine A. Wang
  • , Robin K. Huang
  • , Michael K. Connors
  • , George W. Turner
  • , Zane A. Shellenbarger
  • , Gordon Taylor
  • , Jizhong Li
  • Ramon Martinelli, Dmitry Donetski, Sergei Anikeev, Gregory L. Belenky, Serge Luryi
  • Lockheed Martin
  • Massachusetts Institute of Technology
  • IEEE
  • Sarnoff Corporation
  • Lehigh University
  • Stony Brook University

Research output: Contribution to journalArticlepeer-review

144 Scopus citations

Abstract

Inx Ga1-x ASy Sbi1-v thermophotovoltaic (TPV) diodes were grown lattice matched to GaSb substrates by metalorganic vapor phase epitaxy in the bandgap range of EG = 0.5 to 0.6 eV. InGaAsSb TPV diodes, utilizing front-surface spectral control filters, are measured with thermal-to-electric conversion efficiency and power density (PD) of ηTPV = 19.7% and PD = 0.58 W/cm2, respectively, for a radiator temperature of Tradiotor = 950 °C, diode temperature of Tdlode = 27 °C, and diode bandgap of EG = 0.53 eV. Practical limits to TPV energy conversion efficiency are established using measured recombination coefficients and optical properties of front surface spectral control filters which for 0.53-eV InGaAsSb TPV energy conversion are ηTPV = 28% and PD = 0.85 W/cm2 at the above operating temperatures. The most severe performance limits are imposed by 1) diode open-circuit voltage (Voc) limits due to intrinsic Auger recombination and 2) parasitic photon absorption in the inactive regions of the module. Experimentally, the diode Voc is 15% below the practical limit imposed by intrinsic Auger recombination processes. Analysis of InGaAsSb diode electrical performance versus diode architecture indicates that V oc and thus efficiency are limited by extrinsic recombination processes such as through bulk defects.

Original languageEnglish
Pages (from-to)2879-2888
Number of pages10
JournalIEEE Transactions on Electron Devices
Volume53
Issue number12
DOIs
StatePublished - Dec 2006

Keywords

  • Diodes
  • Indium gallium arsenide antimonide
  • Photovoltaic

Fingerprint

Dive into the research topics of 'Quaternary InGaAsSb thermophotovoltaic diodes'. Together they form a unique fingerprint.

Cite this