Light Management in Bifacial Photovoltaics with Spectrally Selective Mirrors

Bryan Cote, Ian Slauch, Michael Deceglie, Timothy Silverman, Vivian Ferry

Research output: Contribution to journalArticlepeer-review

9 Scopus Citations


Spectrally selective mirrors that simultaneously provide above-bandgap antireflection and sub-bandgap light rejection are tested for their ability to provide passive cooling to partially sub-bandgap transparent bifacial photovoltaics. The optical and thermal benefits of both idealized and real, low-complexity spectrally selective mirrors on single-axis tracking, bifacial PERC arrays under realistic conditions are tested via rigorous finite element simulations. Four- and six-layer mirror designs increased carrier generation beyond what traditional antireflection coatings can provide without the associated cell heating. Idealized mirrors were found to provide up to 2.4 °C of cooling when included on both air/glass interfaces of the bifacial module.

Original languageAmerican English
Pages (from-to)5397-5402
Number of pages6
JournalACS Applied Energy Materials
Issue number6
StatePublished - 28 Jun 2021

Bibliographical note

Publisher Copyright:

NREL Publication Number

  • NREL/JA-5K00-79867


  • antireflection coatings
  • bifacial photovoltaics
  • cooling
  • light management
  • photonic structures
  • solar energy


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