Solar spectral conversion based on plastic films of lanthanide-doped ionosilicas for photovoltaics: Down-shifting layers and luminescent solar concentrators

Cardoso, Marita A.; Correia, Sandra F. H.; Frias, Ana R.; Gonçalves, Helena M. R.; Pereira, Rui F. P.; Nunes, S. C.; Armand, Michel; André, Paulo S.; Bermúdez, V. de Zea; Ferreira, Rute A. S.

doi:10.1016/j.jre.2020.01.007

Cited by 45 publications

(23 citation statements)

References 69 publications

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“…Comparing the Φ of 59 % obtained for 1/PSU with values recently reported in other Eu (III) complex‐based luminescent materials, we obtained generally a higher luminescence quantum yield efficiency [41–44] …”

Section: Resultssupporting

confidence: 78%

“…Comparing the Φ of 59 % obtained for 1/PSU with values recently reported in other Eu (III) complex-based luminescent materials, we obtained generally a higher luminescence quantum yield efficiency. [41][42][43][44] The FTIR spectra of 1/PSU is completely dominated by the polysulfone matrix with the exception of the peak at 1627 cm À 1 assigned to the carbonyls, C=O bonds, and 3 bands in the 900-970 cm À 1 range ascribed to the CÀ F bonds stretching modes of the 1 moieties (Figure 8). With temperature, the peaks of 1 decrease as expected and the PSU peaks increase in intensity.…”

Section: Studies Of 1 Confined In Psu (1/psu)mentioning

confidence: 99%

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A Europium(III) Complex Embedded in a Polysulfone Host Matrix: A Flexible Film with Temperature‐Responsive Ratiometric Behaviour

et al. 2020

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An emissive europium(III) complex [C 2 mim][Eu(fod) 4 ] (1; C 2 mim = 1-ethyl-3-methyl-imidazolium; fod = 1,1,1,2,2,3,3-heptafluoro-7,7-dimethyloctane-4,6-dionate) was prepared. The complex shows ratiometric thermal behaviour up to 155°C. These unusual temperature-dependent properties arise from a solidsolid phase transition that promotes increased contact between the anion and the cation, affecting the emission profile of the emissive anion in two different ratiometric relations. A ultra-bright and flexible emissive photopolymer film was obtained using polysulfone (PSU) as the host matrix of 10 % (w/w) of 1, that also induced changes on the lanthanide emissive profile with temperature. A temperature-responsive luminescent film 1/PSU is sensitivr to heating between 100 and 155°C. Also, the emission lifetime of 1 was not affected by confinement in PSU, while its emission quantum yield was reduced from 82 to 59 %.

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Section: Resultssupporting

confidence: 78%

Section: Studies Of 1 Confined In Psu (1/psu)mentioning

confidence: 99%

A Europium(III) Complex Embedded in a Polysulfone Host Matrix: A Flexible Film with Temperature‐Responsive Ratiometric Behaviour

et al. 2020

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“…Recently, some of us used Eu 3+ -and Tb 3+ -doped organic-inorganic hybrids as LDS coatings on the top of c-Si-based PV cells and obtained an absolute increase of the external quantum efficiency (EQE) of ∼27% in the 300-400 nm spectral region (Correia et al, 2019). In another work, a combined approach using Eu 3+ -based materials as an LDS layer and luminescent solar concentrator as a single device resulted in a significant increase in the PV cell EQE, of ∼32% between 300 and 360 nm relative to the bare PV cell (Cardoso et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

Ultraviolet-Filtering Luminescent Transparent Coatings for High-Performance PTB7-Th:ITIC–Based Organic Solar Cells

Farinhas

Correia

et al. 2021

Front. Nanotechnol.

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Photovoltaic (PV) devices based on organic heterojunctions have recently achieved remarkable power conversion efficiency (PCE) values. However, photodegradation is often a cause of dramatic drops in device performance. The use of ultraviolet (UV)-absorbing luminescent downshifting (LDS) layers can be a mitigation strategy to simultaneously filter UV radiation reaching the device and reemit it with lower energy in the visible spectral range, matching the maximum spectral response of the PV cells and thus enabling the increase of the photocurrent generated by the cell. In this work, we report the use of a Eu3+-doped siliceous-based organic–inorganic hybrid as a coating on organic solar cells based on the PTB7-Th:ITIC bulk heterojunction with the purpose of increasing their performance. We found that the applied coatings yield a PCE enhancement of ∼22% (from 3.1 to 3.8%) in solar cells with spin-coated layers, compared with the bare solar cells, which is among the highest performance enhancements induced by plastic luminescent coatings.

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“…A luminescent downshifting (LDS) layer with phosphors is an active area of research toward improving the conversion efficiency of solar cells. Phosphors for the LDS layer include organic dyes, 4–8 rare-earth complexes, 2,9–11 and inorganic nanoparticles. 12–19 Organic dyes and rare-earth complexes are not suitable for use in solar devices; a durability of more than 20 years is required for solar modules.…”

Section: Introductionmentioning

confidence: 99%

Bandgap-tuned fluorescent CuGaS₂/ZnS core/shell quantum dots for photovoltaic applications

2022

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Solar spectral conversion based on plastic films of lanthanide-doped ionosilicas for photovoltaics: Down-shifting layers and luminescent solar concentrators

Cited by 45 publications

References 69 publications

A Europium(III) Complex Embedded in a Polysulfone Host Matrix: A Flexible Film with Temperature‐Responsive Ratiometric Behaviour

A Europium(III) Complex Embedded in a Polysulfone Host Matrix: A Flexible Film with Temperature‐Responsive Ratiometric Behaviour

Ultraviolet-Filtering Luminescent Transparent Coatings for High-Performance PTB7-Th:ITIC–Based Organic Solar Cells

Bandgap-tuned fluorescent CuGaS₂/ZnS core/shell quantum dots for photovoltaic applications

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Solar spectral conversion based on plastic films of lanthanide-doped ionosilicas for photovoltaics: Down-shifting layers and luminescent solar concentrators

Cited by 45 publications

References 69 publications

A Europium(III) Complex Embedded in a Polysulfone Host Matrix: A Flexible Film with Temperature‐Responsive Ratiometric Behaviour

A Europium(III) Complex Embedded in a Polysulfone Host Matrix: A Flexible Film with Temperature‐Responsive Ratiometric Behaviour

Ultraviolet-Filtering Luminescent Transparent Coatings for High-Performance PTB7-Th:ITIC–Based Organic Solar Cells

Bandgap-tuned fluorescent CuGaS2/ZnS core/shell quantum dots for photovoltaic applications

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Bandgap-tuned fluorescent CuGaS₂/ZnS core/shell quantum dots for photovoltaic applications