Abstract
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 language | American English |
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Pages (from-to) | 5397-5402 |
Number of pages | 6 |
Journal | ACS Applied Energy Materials |
Volume | 4 |
Issue number | 6 |
DOIs | |
State | Published - 28 Jun 2021 |
Bibliographical note
Publisher Copyright:©
NREL Publication Number
- NREL/JA-5K00-79867
Keywords
- antireflection coatings
- bifacial photovoltaics
- cooling
- light management
- photonic structures
- solar energy