Journal
ACS APPLIED ENERGY MATERIALS
Volume 4, Issue 12, Pages 14102-14110Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsaem.1c02860
Keywords
luminescent solar concentrator; agrivoltaics; nanocrystals; quantum dots; greenhouse; photoluminescence; nanocomposite; photovoltaics
Funding
- National Science Foundation [1553234]
- MRSEC program [DMR-1420013]
- Minnesota Environment and Natural Resources Trust Fund
- NSF through the MRSEC [DMR-2011401]
- NNCI program [ECCS2025124]
- Directorate For Engineering
- Div Of Chem, Bioeng, Env, & Transp Sys [1553234] Funding Source: National Science Foundation
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A study on a bilayer luminescent solar concentrator for potential agrivoltaic applications, showing high waveguide efficiency for the Si nanocrystal layer and increased absorption efficiency through a combination of direct absorption enhancement and sensitization for the CdSe/CdS layer. This bilayer system offers significant transmission spectrum tunability across the absorption bands of chlorophyll, which may be useful for agrivoltaic studies of different crop species.
Luminescent solar concentrators are a promising route to environmentally integrated photovoltaics, acting as multifunctional systems that simultaneously generate electricity and transmit sunlight. For agrivoltaic applications, the ability to tune the transmission spectrum of the LSC to optimize crop growth while generating electricity is essential. Here we study a bilayer luminescent solar concentrator composed of a film of Si nanocrystals embedded in poly(methyl methacrylate) and a film of CdSe/CdS nanocrystals embedded in poly(cyclohexylethylene) for potential application in agrivoltaics. Position-dependent photoluminescence measurements demonstrate exceptionally high waveguide efficiency for the Si NC layer, and the films have relatively low diffuse transmission and reflection, indicating low levels of scattering. Using Monte Carlo ray-tracing simulations and experimental characterization, we show that the CdSe/CdS NC layer primarily increases the absorption efficiency of the Si NC-based LSC through a combination of direct absorption enhancement and sensitization. This bilayer system offers significant transmission spectrum tunability across the absorption bands of chlorophyll, which may be useful for agrivoltaic studies of different crop species.
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