Laboratory protocols for measuring and reporting the performance of luminescent solar concentrators

Debije, Michael G.; Evans, Rachel C.; Griffini, Gianmarco

doi:10.1039/d0ee02967j

Cited by 119 publications

(112 citation statements)

References 53 publications

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“…The obtained optical efficiencies are very promising considering that the devices preserve transparencies of 69% and 74% in the visible range of the solar spectrum (400–700 nm) and that the optical properties of the QDs are not yet optimized (PL QY = 70%). These results are in line with the performance of other devices [ 11,12,16,17,21 ] of comparable dimensions, [ 16,21,30,31,32,29 ] and with a similar degree of transparency (an overview of some of these devices is shown in Table S5, Supporting Information). As shown in Table 1, the LSC prepared with GSH based AIS/ZnS QDs performs slightly better than the LSC derived from initially MPA‐capped AIS/ZnS QDs despite the red shifted emission band of the MPA‐based QDs (see Figure 2).…”

Section: Methodssupporting

confidence: 87%

Efficient Luminescent Solar Concentrators Based on Environmentally Friendly Cd‐Free Ternary AIS/ZnS Quantum Dots

Dhamo

Carulli

Nickl

et al. 2021

Advanced Optical Materials

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Luminescent solar concentrators (LSC) allow to obtain renewable energy from building integrated photovoltaic systems. As promising efficient and long‐term stable LSC fluorophores semiconductor nanocrystals like quantum dots (QDs) with size and composition tunable optoelectronic properties have recently emerged. The most popular II/VI or IV/VI semiconductor QDs contain, however, potentially hazardous cadmium or lead ions, which is a bottleneck for commercial applications. A simple aqueous based, microwave‐assisted synthesis for environmentally friendly and highly emissive AgInS2/ZnS QDs is developed using 3‐mercaptopropionic acid (MPA) and glutathione (GSH) and their incorporation into polylaurylmethacrylate (PLMA) polymer slabs integrable in LSC devices (10.4 × 10.4 × 0.2 cm3, G = 12.98). With this simple approach, optical power efficiencies (OPE) of 3.8% and 3.6% and optical quantum efficiencies (OQE) of 24.1% and 27.4% are obtained, which are among the highest values yet reported.

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Section: Methodssupporting

confidence: 87%

Efficient Luminescent Solar Concentrators Based on Environmentally Friendly Cd‐Free Ternary AIS/ZnS Quantum Dots

Dhamo

Carulli

Nickl

et al. 2021

Advanced Optical Materials

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“…We assessed the optical response of PyPBTM/PMMA LSC devices as light harvesting and conversion photonic systems using two key figures of merit: the external photon efficiency η ext , defined as the ratio of the total output photon flux measured at the four edges of the LSC with respect to the incident photon flux, and the internal photon efficiency η int , given by the total output photon flux measured at the four edges of the LSC relative to the absorbed photon flux (definitions and calculations are reported in the Supporting Information). 59 As shown in Fig. 7, η ext increased with PyPBTM concentration, reaching a maximum η ext ≈ 0.50% at 3 wt%.…”

Section: Transparent Colourless Lscsmentioning

confidence: 62%

First demonstration of the use of open-shell derivatives as organic luminophores for transparent luminescent solar concentrators

et al. 2021

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“…η ext and η int were calculated from the experimental data according to Equations (S4) and (S5), Supporting Information. [27] As shown in Figure 5, up to a concentration of 12.5 wt%, a relatively constant η int was observed (≈18%), followed by a slight decrease at the higher luminophore loadings. As concerns η ext , its highest value (≈3.5%) was achieved for PFPBNT loading equal to 12.5 wt%, in agreement with the photophysical response of this system previously discussed.…”

Section: Experimental Evaluation Of Pfpbnt/pmma-based Lsc Performance and Monte Carlo Ray-tracing Modelingmentioning

confidence: 75%

Large‐Area Semi‐Transparent Luminescent Solar Concentrators Based on Large Stokes Shift Aggregation‐Induced Fluorinated Emitters Obtained Through a Sustainable Synthetic Approach

Corsini

Nitti

Tatsi

et al. 2021

Advanced Optical Materials

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framework, luminescent solar concentrators (LSCs) are a practical and versatile solution for the realization of buildingintegrated photovoltaics (BIPVs). [2] The idea behind the LSC concept is the replacement of large area PV modules with small solar cells positioned at the edge of a planar monolithic waveguide (e.g., a polymer-based thin-film deposited onto a glass substrate or a bulk plate) containing luminophore species. The luminophores absorb incident sunlight and emit photons which are redirected by total internal reflection toward the thin edges of the waveguide, where the PV elements convert the luminescent light into electricity. [3] Many different types of luminescent species (e.g., organic fluorophores, [4] perovskite nanocrystals, [5] carbon-dots, [6] and semiconductor quantum dots [7] ) have been extensively explored over the past decades in the attempt to achieve a combination of a broad absorption spectrum, a high light-harvesting efficiency, a high solid-state photoluminescence quantum yield (PLQY), and excellent photostability. [8] Nevertheless, the different luminophore-and waveguide-related loss pathways taking place in the LSC [8a,b,9a] still affect the optical performance of current systems and represent important obstacles to the sustainable commercialization of this technology.In this study, the design, fabrication, and characterization of semi-transparent large-area luminescent solar concentrators (LSCs) in thin-film configuration is reported, incorporating a novel organic luminophore (PFPBNT) emitter based on a π-conjugated core flanked by two naphthothiophene units obtained through a chemically sustainable synthetic approach. As found experimentally and validated through computational modeling, PFPBNT exhibits aggregation-induced emission (AIE) behavior, broad absorption in the UV-vis spectrum and significant Stokes shift (≈4632 cm -1 ), thereby making it an excellent candidate as luminophore in thin-film LSCs based on a poly(methyl methacrylate) (PMMA) matrix, where it is found to show good compatibility, homogeneous distribution, and excellent photostability. After extensive device optimization, PFPBNT/PMMA LSCs with suitable luminophore concentration (12.5 wt%) showed an internal photon efficiency of 17.3% at a geometrical gain of 6.25 under solar-simulated illumination. The size scalability of these systems was also evaluated by means of ray-tracing simulations on devices of up to 1 m 2 surface area. This work demonstrates semi-transparent large-area thin-film LSCs incorporating chemically sustainable AIEgen luminophores, thus opening the way to the development of synthetically affordable, efficient, and stable emitters for the photovoltaic field.

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Laboratory protocols for measuring and reporting the performance of luminescent solar concentrators

Abstract: Recommendation of standardised experiments for adoption by all researchers on luminescent solar concentrators to unify reporting and legitimise the field.

Cited by 119 publications

References 53 publications

Efficient Luminescent Solar Concentrators Based on Environmentally Friendly Cd‐Free Ternary AIS/ZnS Quantum Dots

Efficient Luminescent Solar Concentrators Based on Environmentally Friendly Cd‐Free Ternary AIS/ZnS Quantum Dots

First demonstration of the use of open-shell derivatives as organic luminophores for transparent luminescent solar concentrators

Large‐Area Semi‐Transparent Luminescent Solar Concentrators Based on Large Stokes Shift Aggregation‐Induced Fluorinated Emitters Obtained Through a Sustainable Synthetic Approach

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