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Investigation of InAs/GaAs1-xSbx quantum dots for applications in intermediate band solar cells

  • Y. Cheng
  • , M. Fukuda
  • , V. R. Whiteside
  • , M. C. Debnath
  • , P. J. Vallely
  • , A. J. Meleco
  • , A. J. Roeth
  • , T. D. Mishima
  • , M. B. Santos
  • , K. Hossain
  • , S. Hatch
  • , H. Y. Liu
  • , I. R. Sellers
  • University of Oklahoma
  • Amethyst Research Inc
  • University College London

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

1 Scopus citations

Abstract

The reduction of the effective band gap and the valence band offset are observed by increasing the Sb composition in GaAs1-xSbx matrix encapsulating InAs quantum dots (QDs). To investigate the potential of the InAs/GaAs1-xSbx system for intermediate band solar cells a p-i-n solar cell with a degenerate valence band is grown. An enhancement in the QDs region with increasing temperature is observed in temperature dependent external quantum efficiency measurements. An 's-shape' behavior of the short circuit current density, JSc, is observed as the temperature increases. Ongoing investigations to illuminate the physical mechanisms contributing to the 's-shape' behavior of Jsc will also be presented.

Original languageEnglish
Title of host publication2016 IEEE 43rd Photovoltaic Specialists Conference, PVSC 2016
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages5-8
Number of pages4
ISBN (Electronic)9781509027248
DOIs
StatePublished - Nov 18 2016
Event43rd IEEE Photovoltaic Specialists Conference, PVSC 2016 - Portland, United States
Duration: Jun 5 2016Jun 10 2016

Publication series

NameConference Record of the IEEE Photovoltaic Specialists Conference
Volume2016-November
ISSN (Print)0160-8371

Conference

Conference43rd IEEE Photovoltaic Specialists Conference, PVSC 2016
Country/TerritoryUnited States
CityPortland
Period06/5/1606/10/16

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