Enhancing the efficiency of luminescent solar concentrators (LSCs)

Assadi, Morteza Khalaji; Hanaei, Hengameh; Mohamed, Norani Muti; Saidur, R.; Bakhoda, Shokoufeh; Bashiri, Robabeh; Moayedfar, Majid

doi:10.1007/s00339-016-0359-2

Cited by 27 publications

(17 citation statements)

References 97 publications

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“…Finally, the quantum yield of the phosphor is important. Current reviews 14,[31][32][33] indicate that an important class of prospective phosphors is organic dyes of which Ref. 14 gives 20 examples.…”

Section: Luminescent Solar Concentrators (Lsc)mentioning

confidence: 99%

High quantum yield of the Egyptian blue family of infrared phosphors (MCuSi4O10, M = Ca, Sr, Ba)

Berdahl

Boocock

Chan

et al. 2018

Journal of Applied Physics

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The alkaline earth copper tetra-silicates, blue pigments, are interesting infrared phosphors. The Ca, Sr, and Ba variants fluoresce in the near-infrared (NIR) at 909, 914, and 948 nm, respectively, with spectral widths on the order of 120 nm. The highest quantum yield / reported thus far is ca. 10%. We use temperature measurements in sunlight to determine this parameter. The yield depends on the pigment loading (mass per unit area) x with values approaching 100% as x ! 0 for the Ca and Sr variants. Although maximum quantum yield occurs near x ¼ 0, maximum fluorescence occurs near x ¼ 70 g m À2 , at which / ¼ 0.7. The better samples show fluorescence decay times in the range of 130 to 160 ls. The absorbing impurity CuO is often present. Good phosphor performance requires long fluorescence decay times and very low levels of parasitic absorption. The strong fluorescence enhances prospects for energy applications such as cooling of sunlit surfaces (to reduce air conditioning requirements) and luminescent solar concentrators.

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Section: Luminescent Solar Concentrators (Lsc)mentioning

confidence: 99%

High quantum yield of the Egyptian blue family of infrared phosphors (MCuSi4O10, M = Ca, Sr, Ba)

Berdahl

Boocock

Chan

et al. 2018

Journal of Applied Physics

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“…The basic idea behind the LSC concept is the replacement of a large solar-cell area with a transparent thin film or plate collector (the host matrix) containing luminescent species (the luminophores) that enable a large amount of incident photons to be absorbed, to be spectrally converted through a photoluminescence (usually fluorescence) process and to be redirected towards edge-mounted small-area PV cells, where the conversion of light to electricity can take place. Interestingly, the ability of luminophores to collect both direct and diffuse light strengthens the possibility to employ LSCs for BIPV applications and allows to improve the light-harvesting ability of conventional solar cells [4], [5].…”

Section: Introductionmentioning

confidence: 99%

Highly emissive fluorescent silica-based core/shell nanoparticles for efficient and stable luminescent solar concentrators

et al. 2021

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Luminescent solar concentrators (LSCs) represent a viable spectral conversion technology to maximize sunlight harvesting while promising to reduce the current gap for integration of solar cells into the built environment. In this work, novel highly emissive and photostable core-shell nanostructured luminescent species were synthesized and used in LSC devices. Such systems were obtained by entrapping Lumogen F Red 305 in silica-based shells by means of the sol-gel process using a combination of hydrophilic (tetraethyl orthosilicate) and hydrophobic (phenyl triethoxysilane) silica precursors. By tuning their relative proportions during the synthetic process, fine control over the characteristic dimensions and morphology of the obtained dye-doped core-shell nanoparticles could be achieved, leading to a maximum concentration of non-covalently entrapped fluorescent dye of ~1 wt.%. Optical characterization showed that the newly synthetized nanoparticles displayed markedly improved photoluminescence quantum yield in solid state (~ 95 %) with respect to the non-encapsulated dye (~ 2 %), as a result of an effective suppression of dye aggregation and fluorescence quenching phenomena. In addition, their excellent photostability under harsh UV light exposure was demonstrated, resulting from the protective action of the encapsulating hybrid silica-based shell, which can effectively limit photobleaching of the luminescent core. Their incorporation in thin-film LSCs led to a maximum internal photon efficiency as high as ~29%, thus providing evidence of their suitability as highly performing luminescent species with superior optical response and excellent photostability. Also, a maximum external photon efficiency as high as 2.12% was achieved. This work provides the first demonstration of silica-based encapsulation of Lumogen F Red 305 and of the application of silica-based core-shell nanoparticles in LSCs, thus paving the path to the development of a new class of highly efficient and stable nanostructured luminophores for the photovoltaic field.

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“…One of the greatest advantage of using an LSC is in the cost reduction of current solar harvesting technology, achieved by reducing the need for expensive, large‐area PV cells. The manufacturing cost of LSC is low because of the comparatively cheap material cost [106–108] . Because an LSC's optical performance is mostly independent of irradiation angle, these devices perform well without direct illumination, removing the need for solar tracking that PVs employ [109–113] .…”

Section: Luminescent Solar Concentratorsmentioning

confidence: 99%

Review on Colloidal Quantum Dots Luminescent Solar Concentrators

et al. 2021

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Luminescent solar concentrators (LSCs) have recently gained popularity as an effective solution to increase solar energy conversion. Utilizing LSCs together with solar cells can generate more energy at a lower cost than using only solar cells. LSCs operate by utilizing luminophores, molecules that absorb incident solar irradiation and re‐emit photons, and waveguides that redirect emitted photons to the edges of a glass or polymer slab at high concentrations. Many quantum dots (QDs) have been the focus of much research as luminophores for LSCs, owing to their high quantum yields (QYs), controllable absorption/emission spectra, good stability, and ease of synthesis. Various QDs, such as CdSe, PbS, CdS, AgInS2, Si, and C, have been modified to enhance their optical performances in LSCs, often measured by their optical efficiencies, internal/external quantum efficiencies, and power conversion efficiencies. This review appraises the latest developments in colloidal QDs—basic QDs, doped QDs, core/shell QDs, hybrid QDs, and Si‐based QD—for their applications in LSCs. Other factors that enhance an LSC's efficiency, such as altering the polymer matrix and using distributed Bragg reflectors, are discussed. The development of highly efficient, QD‐based LSCs will be essential for increasing solar energy production worldwide.

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Enhancing the efficiency of luminescent solar concentrators (LSCs)

Cited by 27 publications

References 97 publications

High quantum yield of the Egyptian blue family of infrared phosphors (MCuSi4O10, M = Ca, Sr, Ba)

High quantum yield of the Egyptian blue family of infrared phosphors (MCuSi4O10, M = Ca, Sr, Ba)

Highly emissive fluorescent silica-based core/shell nanoparticles for efficient and stable luminescent solar concentrators

Review on Colloidal Quantum Dots Luminescent Solar Concentrators

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