New Multijunction Design Leads to Ultra-Efficient Solar Cell

Research output: NRELFact Sheet


NREL has demonstrated a 45.7% conversion efficiency for a four-junction solar cell at 234 suns concentration. This achievement represents one of the highest photovoltaic research cell efficiencies ever achieved across all types of solar cells. NREL's new solar cell, which is designed for operation in a concentrator photovoltaic (CPV) system where it can receive more than 1,000 suns of concentrated sunlight, greatly improves earlier designs by adding an additional high quality absorber layer to achieve an ultra-high efficiency.
Original languageAmerican English
StatePublished - 2015

NREL Publication Number

  • NREL/FS-5J00-64823


  • concentrator photovoltaics
  • CPV
  • National Renewable Energy Laboratory (NREL)
  • NREL
  • photovoltaic
  • PV
  • science and technology highlights
  • solar cells


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