Fabrication of high efficiency, III-V multi-junction solar cells for space concentrators

Alex Stavrides, Richard King, Peter Colter, Geoffrey Kinsey, A. J. McDanal, Mark J. O'Neill, N. H. Karam

Research output: Chapter in Book/Report/Conference proceedingConference contribution

6 Scopus citations

Abstract

High-efficiency multijunction cells have been fabricated for use in space concentrator modules at concentrations of 8-15 suns. Modeling and optimization efforts to modify Spectrolab's 1-sun cells for use at concentration are described. An experimental population of 200 cells of 3.5 cm2 aperture area (4.2 cm2 total area) grown using a variety of conditions had an average efficiency of 29.6% at 8 suns AM0. This population included several cells which exceeded 31% aperture area efficiency and 32% active area efficiency. A Spectrolab cell was measured in ENTECH's mini-concentrator module (at approximately 8 suns) with a combined lens/cell mini-module efficiency of 30.8% under outdoor sunlight, which is, to our knowledge, the first time the 30% barrier has been broken for such a module.

Original languageEnglish (US)
Title of host publicationConference Record of the IEEE Photovoltaic Specialists Conference
Pages920-922
Number of pages3
StatePublished - 2002
Externally publishedYes
Event29th IEEE Photovoltaic Specialists Conference - New Orleans, LA, United States
Duration: May 19 2002May 24 2002

Other

Other29th IEEE Photovoltaic Specialists Conference
CountryUnited States
CityNew Orleans, LA
Period5/19/025/24/02

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Condensed Matter Physics

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