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Highly Efficient Luminescent Solar Concentrators by Selective Alignment of Donor–Emitter Fluorophores
- Source :
- Chemistry of Materials. 31:3001-3008
- Publication Year :
- 2019
- Publisher :
- American Chemical Society (ACS), 2019.
-
Abstract
- Vertically aligning fluorophores to the surface of a waveguide is known to be an effective approach to improve the optical quantum efficiency (OQE) of luminescent solar concentrators (LSCs). While the chromophore alignment assists waveguiding of the emitted photons to the LSC edges, it also significantly reduces the light-harvesting properties of the LSC. We report here a fluorophore pair consisting of a sphere-shaped energy donor and a rod-shaped emitter that was incorporated in LSCs to provide selective fluorophore alignment to address the reduced incident-light absorption issue. A liquid-crystal polymer matrix was used to perpendicularly align the rod-shaped acceptors to a favorable orientation for light guiding, while the sphere-shaped donor was randomly oriented to maintain its light-absorbing properties. The OQE of LSC devices with this selectively aligned donor–acceptor fluorophore system is 78% without significant loss of light-harvesting capability.
- Subjects :
- Physics::Biological Physics
Fluorophore
Photon
business.industry
General Chemical Engineering
02 engineering and technology
General Chemistry
Chromophore
010402 general chemistry
021001 nanoscience & nanotechnology
01 natural sciences
Waveguide (optics)
0104 chemical sciences
chemistry.chemical_compound
chemistry
Materials Chemistry
Optoelectronics
Quantum efficiency
0210 nano-technology
business
Absorption (electromagnetic radiation)
Luminescence
Common emitter
Subjects
Details
- ISSN :
- 15205002 and 08974756
- Volume :
- 31
- Database :
- OpenAIRE
- Journal :
- Chemistry of Materials
- Accession number :
- edsair.doi...........cde4353b6b35a24be00de40f26061f90