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Solid-state fluorescent carbon dots-based composite optical waveguide film enables transparent and high-performance luminescent solar concentrators

Author

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  • Li, Jiurong
  • Li, Wenjing
  • Wang, Hangxiang
  • Zhao, Xiujian
  • Gong, Xiao

Abstract

Aggregation-caused quenching (ACQ) is a great obstacle for carbon dots (CDs) to be applied in the photovoltaic fields. In this work, we report that acid-catalyzed hydrolytic condensation of N-[3-(trimethoxysilyl)propyl]ethylenediamine (KH-792) is utilized to generate organosilicon matrices, meanwhile, CDs are covalently linked to the organosilicon matrices to realize solid-state fluorescence via one-step solvothermal method. This approach enables CDs to be uniformly distributed in the organosilicon matrices to produce strong solid-state fluorescence. Most importantly, the obtained blue fluorescent CDs (b-CDs) can be combined with (3-Aminopropyl)triethoxysilane (APTES) to form a highly transparent optical waveguide film on the glass to construct high-performance luminescent solar concentrators (LSCs) with high loading amount. By changing the CDs loading amounts and volume of the coating solution, the transparent LSCs (5 × 5 × 0.2 cm3) with high optical conversion efficiency (ηopt) of 2.83% can be achieved. In addition, the b-CDs powder can be intergrated with 365 nm chips to successfully fabricate monochromatic light-emitting diodes (LEDs). The prepared b-CDs powder with strong solid-state fluorescence shows great potential in photoelectric devices.

Suggested Citation

  • Li, Jiurong & Li, Wenjing & Wang, Hangxiang & Zhao, Xiujian & Gong, Xiao, 2024. "Solid-state fluorescent carbon dots-based composite optical waveguide film enables transparent and high-performance luminescent solar concentrators," Applied Energy, Elsevier, vol. 358(C).
    • Handle: RePEc:eee:appene:v:358:y:2024:i:c:s0306261923019359
    DOI: 10.1016/j.apenergy.2023.122571
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    References listed on IDEAS

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    1. Haiyao Yang & Yingliang Liu & Zhouyi Guo & Bingfu Lei & Jianle Zhuang & Xuejie Zhang & Zhiming Liu & Chaofan Hu, 2019. "Hydrophobic carbon dots with blue dispersed emission and red aggregation-induced emission," Nature Communications, Nature, vol. 10(1), pages 1-11, December.
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