I-V Performance and Stability Study of Dyes for Luminescent Plate Concentrators

Abstract

In this paper, both the performance and stability of luminescent flat plate concentrator (LFPC) plates in combination with mc-Si photovoltaic cells are studied. It is shown that the electrical current of a silicon solar cell attached to the luminescent plate is improved by a factor 1.5 using a LFPC containing a single dye. It is also shown that most of the dyes are not stable in the polymer plates that are currently used. Screening of the stability of several other dyes indicates that the stability is strongly dependent on the type of dye and the polymer matrix, e.g., additives or the monomer residues.

Spectral-based analysis of thin film luminescent solar concentrators

“…As a model system we employ thin film LSCs, where the photoactive component is dispersed in a PMMA layer on top of a transparent glass support (Reisfeld and Jorgensen, 1982;Reisfeld et al, 1994;Reisfeld, 2002). The perylene dye Lumogen F Red 305 (hereafter referred to as Red 305) is well suited for application in LSCs, as the absorption covers a large part of the visible range Kinderman et al, 2007;Slooff et al, 2008;Meyer and Markvart, 2009). Furthermore, Red 305 features a near-unity luminescence quantum yield (η yield = 1) (Ahn et al, 2007;Wilson and Richards, 2009) and good intrinsic stability (Seybold and Wagenblast, 1989;van Sark et al, 2008).…”

Fluorescent nanopigments: Quantitative assessment of their quantum yield

“…These nanopigments were synthesized by loading either the inorganic or the organic host with fluorescent perylene dyes ͑organic guest͒. 5,55 Before the encapsulation of the dye molecules, their purity was checked by standard analysis methods ͑e.g., NMR͒ that yielded negligible impurity concentrations for all the used products. Moreover, we made a few tests with perylene molecules purified by gradient sublimation but we did not find any difference in the optical properties of the fluorescent nanoparticles after the host loading.…”

“…In this article, we present an optical technique that allows the direct measurement of the absolute quantum yield of fluorescent nanoparticles such as zeolite L ͑ZL͒ nanocrystals 2,[20][21][22][28][29][30][31] and poly͑methyl methacrylate͒ ͑PMMA͒ nanospheres 5,17,19,[23][24][25]53,54 both loaded with fluorescent perylene molecules, which are well known for their chemical and photochemical stabilities as well as for their high quantum yield. 5,55 Our experimental method is based on the measurement of the diffuse reflectance ͑DR͒ spectra of fluorescent nanopigments adsorbed on microcrystalline cellulose substrates.…”

“…[1][2][3][4][5][6][7][8] Moreover, functionalizing the external surface of the these fluorescent nanoparticles and embedding them into a dielectric ͑e.g., polymer͒ matrix has enabled the realization of a large variety of novel optophotonic devices. [9][10][11][12][13][14] Recently, due to the wealth of existing organic fluorescent dyes, their encapsulation into either an inorganic or an organic host has been demonstrated to be a very promising and versatile approach to synthesize a large palette of new fluorescent pigments.…”

“…5,55 Our experimental method is based on the measurement of the diffuse reflectance ͑DR͒ spectra of fluorescent nanopigments adsorbed on microcrystalline cellulose substrates. In particular, we adapted the DR technique previously developed by Ruetten and Thomas 56 and Ferreira et al 57 for the measurement of the fluorescence efficiency of organic dyes to the assessment of the quantum yield of organic-inorganic and organic-organic nanopigments, for which both light scattering and self-absorption strongly affect the fluorescence emission.…”