Journal
ACS PHOTONICS
Volume 6, Issue 9, Pages 2303-2311Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsphotonics.9b00802
Keywords
silicon nanoparticles; quantum dots; photovoltaic devices; organic dyes; anthracene; energy transfer
Categories
Funding
- Knut and Alice Wallenberg Foundation
- Kempe Foundation
- European Union's Horizon 2020 Research and Innovation Programme [654002]
- University of Bologna
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One of the most detrimental loss mechanisms in Luminescent Solar Concentrators (LSCs) is reabsorption of emitted light from the luminophore. Silicon Nanocrystals (SiNCs) offer a solution due to the high apparent Stokes shift, but the poor absorption properties limit their performance as LSC luminophores. Coupling an organic dye to SiNCs represents a smart approach to obtain sensitization of SiNC luminescence by the organic dyes, thus, resulting in tunable and improved optical properties of LSCs. In particular, 9,10-diphenylanthracene was employed as a UV sensitizer for SiNCs in order to produce LSCs with an aesthetic appearance suitable to smart window application and optical efficiency as high as 4.25%. In addition, the role of the energy transfer process on LSC performance was elucidated by a thorough optical and photovoltaic characterization.
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