Progress and Challenges for Next-Generation High-Efficiency Multijunction Solar Cells

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Multijunction solar cells are the most efficient solar cells ever developed with demonstrated efficiencies above 40%, far in excess of the performance of any conventional single-junction cell. This paper describes paths toward next-generation multijunction cells with even higher performance. Starting from fundamental multijunction concepts, the paper describes the desired characteristics of semiconductor materials for multijunction cells; the corresponding challenges in obtaining these characteristics in actual materials; and materials and device architectures to overcome these challenges.

Original languageAmerican English
Pages (from-to)131-138
Number of pages8
JournalCurrent Opinion in Solid State and Materials Science
Issue number6
StatePublished - 2010

NREL Publication Number

  • NREL/JA-520-47789


  • Concentrator photovoltaics
  • High efficiency
  • III-V
  • Multijunction solar cells
  • Photovoltaics


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