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Spanning the Solar Spectrum: Azopolymer Solar Thermal Fuels for Simultaneous UV and Visible Light Storage
Author(s) -
Saydjari Andrew K.,
Weis Philipp,
Wu Si
Publication year - 2017
Publication title -
advanced energy materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.08
H-Index - 220
eISSN - 1614-6840
pISSN - 1614-6832
DOI - 10.1002/aenm.201601622
Subject(s) - materials science , visible spectrum , optoelectronics , thermal , process engineering , engineering physics , meteorology , physics , engineering
A UV‐sensitive azopolymer and a visible‐light‐sensitive azopolymer are combined with a fluorescent dye and a filter to create a four‐layer solar thermal cell with record efficiency gravimetric energy density. While most azopolymers discharge under visible irradiation, this device can use a true solar spectrum because fluorescent down‐conversion enables storage of light that would otherwise cause discharging.