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Triplex Glass Laminates with Silicon Quantum Dots for Luminescent Solar Concentrators
Author(s) -
Huang Jing,
Zhou Jingjian,
Haraldsson Tommy,
Clemments Alden,
Fujii Minoru,
Sugimoto Hiroshi,
Xu Bo,
Sychugov Ilya
Publication year - 2020
Publication title -
solar rrl
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.544
H-Index - 37
ISSN - 2367-198X
DOI - 10.1002/solr.202000195
Subject(s) - nanocomposite , materials science , quantum dot , photoluminescence , quantum yield , luminescence , optoelectronics , nanocrystal , silicon , photovoltaic system , polymer , absorption (acoustics) , nanotechnology , optics , composite material , physics , fluorescence , ecology , biology
Luminescent solar concentrator (LSC) is a promising technology to integrate semitransparent photovoltaic (PV) systems into modern buildings and vehicles. Silicon quantum dots (QDs) are good candidates as fluorophores in LSCs, due to the absence of overlap between absorption and emission spectra, high photoluminescence quantum yield (PLQY), good stability, nontoxicity, and element abundance. Herein, LSCs based on Si QDs/polymer nanocomposites are fabricated in a triplex glass configuration. A special polymer matrix (off‐stoichiometric thiol‐ene, OSTE) is used, which improves Si nanocrystal quantum yield. Herein, a comprehensive investigation to improve the performance of LSCs by exploring different strategies under the guidance of a theoretical description is conducted. Among these strategies, the systematical enhancement of PLQY of the nanocomposite is achieved by tuning the thiol/allyl group ratio in the OSTE matrix. In addition, ligand selection and loading optimization for QDs reduce the total scattering loss in the device. Finally, an optical power efficiency of 7.9% is achieved for an optimized LSC prototype (9 × 9 × 0.6 cm 3 , transmittance ≈62% at 500 nm) based on Si QDs/OSTE nanocomposite, which shows good potential of this material system in LSC fabrication.