Performance of Single Layer Luminescent Concentrators with Multiple Dyes

Burgers, A.R.; Slooff, L.H.; Büchtemann, A.; Roosmalen, J. van

doi:10.1109/wcpec.2006.279416

Cited by 12 publications

(13 citation statements)

References 4 publications

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“…The optical properties of an organic dye (BASF Lumogen F Rot 305) in a LSC have been measured over a range of excitation wavelengths, and the emission spectrum is found to depend on the excitation wavelength, when exciting at wavelengths on the long-wavelength edge of the absorption spectrum. This observation is contrary to the general assumption [27][28][29][30][31] in modeling of LSC performance that, since the emission process of an excited organic dye molecule is independent of excitation wavelength (Kasha's rule [32]), the emission spectrum and PLQY of the dye-doped LSC are also independent of excitation wavelength. The origin of this effect and its implications in the prediction of reabsorption losses in LSC are discussed.…”

Section: Introductionmentioning

confidence: 58%

“…Since the aim of the simulations is to determine the probability that fluorescence photons emitted inside the sheet will reach the edges, we decided to simulate initial fluorescence photons, rather than the more common approach of simulating incident solar photons [27][28][29][30][31]. Although exactly the same results can be obtained from both methods, simulating initial fluorescence photons is somewhat simpler because the program does not need to model either a solar spectrum (to generate incident photons) or the wavelength-dependent surface reflectivity of the LSC sheet.…”

Section: Monte Carlo Simulationsmentioning

confidence: 99%

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Characterization and reduction of reabsorption losses in luminescent solar concentrators

et al. 2010

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The effects of excitation wavelength on the optical properties (emission spectrum and quantum yield) of a luminescent solar concentrator (LSC) containing a fluorescent organic dye (Lumogen F Rot 305) are studied. Excitation at wavelengths on the long-wavelength edge of the absorption spectrum of the dye results in redshifted emission, but the quantum yield remains constant at 100%. The origin of this effect and its consequences are discussed. The extent of the long-wavelength tail of the absorption spectrum of the dye is determined and the importance in reabsorption losses is shown. The optical efficiencies and photon transport probabilities of LSCs containing either an organic dye or a rare-earth lanthanide complex are compared using ray-tracing simulations and experiment. The optical efficiency is shown to depend strongly on the Stokes shift of the fluorophore. The lanthanide complex, which has a very large Stokes shift, exhibits a higher optical efficiency than the dye (64% cf. 50%), despite its lower quantum yield (86% cf. 100%).

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Section: Introductionmentioning

confidence: 58%

Section: Monte Carlo Simulationsmentioning

confidence: 99%

Characterization and reduction of reabsorption losses in luminescent solar concentrators

et al. 2010

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“…It is closely related to the external quantum efficiency (EQE) of the complete device. The EQE of LSC modules is lower than for solar cells, peaking at approximately 40% for small devices [17]. In order of increasing size, the 2 eV example plates absorb and deliver to the attached solar cells only 6%, 2% and 1% of the incident solar photons.…”

Section: Limiting Efficiency For First Generation Concentratorsmentioning

confidence: 99%

Operating regimes for second generation luminescent solar concentrators

Farrell

Yoshida

2011

Progress in Photovoltaics

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In this paper, we introduce the concept of first and second generation luminescent solar concentrators. Traditional, first generation devices are characterised by their randomly oriented molecules that absorb sunlight and emit luminescence isotropically. By applying detailed balance to the absorbed and emitted photon fluxes we derive the Shockley–Queisser limit for these devices. It is found that they have inherently low efficiency due to optical losses (the well known reabsorption problem) and also that device performance is strongly affected by the areal ratio between the top and edge surfaces. This latter property makes it very difficult to achieve significant cost reductions because as the edge area is reduced (to lessen the amount of expensive photovoltaic material required for conversion), the efficiency of the system diminishes. First generation concentrators have now approached the fundamental limits which we predict here, thus to achieve a stand‐alone luminescent concentrator that enables significant cost reductions, second generation approaches are now needed. New, second generation devices are characterised by either directional emitters or photonic filters which enhance the waveguiding mechanism, allowing high efficiency and large sizes to be achieved simultaneously. Here we define the fundamental operating regime in which second generation technology must reach to surpass the limit of first generation devices. Copyright © 2011 John Wiley & Sons, Ltd.

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“…The reflector attached at the backside and the mirrors attached on the sides are effective in improving EQE, irrespective of A-LSC and C-LSC as shown in Figure 8 and Figure 9. With the subsidiary attachment of the backside reflector and side mirrors, the transmitted photons that have not been absorbed by the dye molecules are able to be absorbed [17].…”

Section: External Quantum Efficiency Of the Lscsmentioning

confidence: 99%

The luminescent solar concentrators with the H-aggregate of perylene diimide dye imbedded into PMMA

Han

Kim

2015

Fibers Polym

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A perylene diimide fluorescent dye, N,N'-bis-(2-tert-butylaniline)-3,4,9,10-perylenetetracarboxylic diimide (BTBPD) was synthesized and crystallized to H-aggregate. The dye aggregates were studied for their photophysical properties, such as absorption and emission behavior, fluorescence efficiency, and Stokes shift in comparison with synthesized raw powder-formed dyes. The fluorescent dyes were then imbedded into the PMMA sheet through the thermal free radical polymerization of a methyl methacrylate monomer. Various luminescent solar concentrators were fabricated using these dye-imbedded PMMA sheets with the aid of a multi-crystalline silicon solar cell, side mirror, and backside diffuse reflector. The solar cells were studied on their photovoltaic performance, such as V o c , I s c , photoelectric conversion efficiencies, IPCE, and external quantum efficiencies. The effect of the crystalline form of the dyes on solar cell performance was investigated.

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Performance of Single Layer Luminescent Concentrators with Multiple Dyes

Cited by 12 publications

References 4 publications

Characterization and reduction of reabsorption losses in luminescent solar concentrators

Characterization and reduction of reabsorption losses in luminescent solar concentrators

Operating regimes for second generation luminescent solar concentrators

The luminescent solar concentrators with the H-aggregate of perylene diimide dye imbedded into PMMA

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