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The Role of Valley Degeneracy in Carrier Extraction in Valley Photovoltaic Solar Cells

  • Kyle R. Dorman
  • , Vincent R. Whiteside
  • , David K. Ferry
  • , Israa G. Yusuf
  • , Tanner J. Legvold
  • , Tetsuya D. Mishima
  • , Michael B. Santos
  • , Stephen J. Polly
  • , Seth M. Hubbard
  • , Ian R. Sellers

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

Abstract

By operating a hot carrier solar cell optically at the absorber yet electronically at upper valleys of the band structure, a path to surpassing the single gap efficiency limit becomes viable. In pursuit of this, a set of InGaAs heterostructures have been produced in search of an effective extraction pathway for both high energy 'hot' carriers and low energy carriers accelerated to the upper valleys by the internal electric field. The requirements of band alignments, intervalley scattering, and electric field strength guide an approach toward a practical valley photovoltaic hot carrier solar cell.

Original languageEnglish
Title of host publication2021 IEEE 48th Photovoltaic Specialists Conference, PVSC 2021
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages583-585
Number of pages3
ISBN (Electronic)9781665419222
DOIs
StatePublished - Jun 20 2021
Event48th IEEE Photovoltaic Specialists Conference, PVSC 2021 - Fort Lauderdale, United States
Duration: Jun 20 2021Jun 25 2021

Publication series

NameConference Record of the IEEE Photovoltaic Specialists Conference

Conference

Conference48th IEEE Photovoltaic Specialists Conference, PVSC 2021
Country/TerritoryUnited States
CityFort Lauderdale
Period06/20/2106/25/21

Keywords

  • hot carrier solar cells
  • intervalley scattering
  • valley photovoltaics

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