Response to “Comment on ‘Efficiency limits of photovoltaic fluorescent collectors’ [Appl. Phys. Lett. 87, 171101 (2005)]”

Rau, Uwe; Einsele, Florian; Glaeser, Gerda C.

doi:10.1063/1.2198475

Cited by 7 publications

(3 citation statements)

References 5 publications

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“…Then the system is in thermal equilibrium and the chemical potential for all photons is equal. This is the same condition for the system Rau et al [29] describe. As derived in equation (11), the concentration is the ratio between the flux 30101-p6 (22).…”

Section: Statistical Limitmentioning

confidence: 56%

“…This analytical description only holds for the statistical limit in the radiative case and for systems with applied photonic structure. As discussed by Markvart [28] and Rau et al [29], using photon fluxes only describes systems with equal chemical potential μ for the incoming photons. Applying a PBS equalizes μ because the absorption coefficient for all incoming photons is now α 1 .…”

Section: Statistical Limitmentioning

confidence: 99%

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Simulations of geometry effects and loss mechanisms affecting the photon collection in photovoltaic fluorescent collectors

2012

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Monte-Carlo simulations analyze the photon collection in photovoltaic systems with fluorescent collectors. We compare two collector geometries: the classical setup with solar cells mounted at each collector side and solar cells covering the collector back surface. For small ratios of collector length and thickness, the collection probability of photons is equally high in systems with solar cells mounted on the sides or at the bottom of the collector. We apply a photonic band stop filter acting as an energy selective filter which prevents photons emitted by the dye from leaving the collector. We find that the application of such a filter allows covering only 1% of the collector side or bottom area with solar cells. Furthermore, we compare ideal systems in their radiative limits to systems with included loss mechanisms in the dye, at the mirror, or the photonic filter. Examining loss mechanisms in photovoltaic systems with fluorescent collectors enables us to estimate quality limitations of the used materials and components.

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Section: Statistical Limitmentioning

confidence: 56%

Section: Statistical Limitmentioning

confidence: 99%

Simulations of geometry effects and loss mechanisms affecting the photon collection in photovoltaic fluorescent collectors

2012

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“…The conversion efficiency is normally smaller than estimated in the above calculations, because re-absorption (or, in other words, photon recycling) was neglected in our simulations as well as in simulations by others [16]. In the case of down-conversion layers with thickness much larger than the mean free path of photons the photon recycling effect proves to be important [38].…”

Section: There)mentioning

confidence: 60%

Improved model for solar cells with down-conversion and down-shifting of high-energy photons

Bădescu

Vos

Badescu

et al. 2007

J. Phys. D: Appl. Phys.

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A system for converting high-energy incident photons into photons of lower energy was proposed by Trupke et al (2002 J. Appl. Phys. 92 1668). In the present paper we re-analyse this system by using a more elaborate model. The main conclusions of this work are as follows. (1) When non-radiative recombination is neglected, our results confirm the findings of Trupke et al. Both the front and rear down-converter systems improve the performance of a single mono-facial solar cell. However, the present model shows that the conversion efficiency is smaller than estimated before. (2) When both the cell and the front (or rear) converter have the same low radiative recombination efficiency, their combination does not increase the cell conversion efficiency. (3) Adding a converter with a high (near unity) value of the radiative recombination efficiency to a solar cell shows beneficial effects. (4) In this case (i) for high-quality solar cells, the combination cell–rear converter provides a higher efficiency than the combination front converter–solar cell whereas (ii) for low quality solar cells, the front converter system performs better than the rear converter system. Conclusions (3) and (4) may be dependent on the details of the model adopted here.

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Fluorescent Concentrators for Photovoltaic Applications

Goldschmidt

Prönneke

Büchtemann

et al. 2015

Photon Management in Solar Cells

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Response to “Comment on ‘Efficiency limits of photovoltaic fluorescent collectors’ [Appl. Phys. Lett. 87, 171101 (2005)]”

Abstract: Response to "Comment on 'Theoretical study of single molecule fluorescence in a metallic nanocavity'" [Appl.

Cited by 7 publications

References 5 publications

Simulations of geometry effects and loss mechanisms affecting the photon collection in photovoltaic fluorescent collectors

Simulations of geometry effects and loss mechanisms affecting the photon collection in photovoltaic fluorescent collectors

Improved model for solar cells with down-conversion and down-shifting of high-energy photons

Fluorescent Concentrators for Photovoltaic Applications

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