Ordered mesoporous silica nanoparticles (MSNs) were impregnated with different loadings of the luminescent complex tris(dibenzoylmethane) mono(1,10-phenanthroline)europium(III) (Eu(dbm)3phen), with the aim of increasing the luminescence by avoiding concentration quenching and having mainly in mind the application as spectral converter for multi-crystalline silicon solar cells. The morphological, structural and luminescence properties of the impregnated silica nanoparticles were characterized by N2 physisorption, X-ray diffraction, transmission electron microscopy, infrared spectroscopy, UV–visible spectroscopy and photoluminescence excitation and emission measurements. Photostability was tested under 1 sun (1000 W/m2) illumination for 24 h and the related effects were inspected by UV–visible and photoluminescence spectroscopies. Impregnation of the complex into 50–70 nm MSNs with pore size tailored around 2.9 nm depressed concentration quenching and allowed the use of complex loadings as high as 23 wt%. Sunlight irradiation caused a marked increase in the luminescence intensity.

Moretti, E., Talon, A., Storaro, L., LE DONNE, A., Binetti, S., Benedetti, A., et al. (2014). Concentration quenching and photostability in Eu(dbm)3phen embedded in mesoporous silica nanoparticles. JOURNAL OF LUMINESCENCE, 146, 178-185 [10.1016/j.jlumin.2013.09.059].

Concentration quenching and photostability in Eu(dbm)3phen embedded in mesoporous silica nanoparticles

LE DONNE, ALESSIA;BINETTI, SIMONA OLGA;POLIZZI, SERENA
2014

Abstract

Ordered mesoporous silica nanoparticles (MSNs) were impregnated with different loadings of the luminescent complex tris(dibenzoylmethane) mono(1,10-phenanthroline)europium(III) (Eu(dbm)3phen), with the aim of increasing the luminescence by avoiding concentration quenching and having mainly in mind the application as spectral converter for multi-crystalline silicon solar cells. The morphological, structural and luminescence properties of the impregnated silica nanoparticles were characterized by N2 physisorption, X-ray diffraction, transmission electron microscopy, infrared spectroscopy, UV–visible spectroscopy and photoluminescence excitation and emission measurements. Photostability was tested under 1 sun (1000 W/m2) illumination for 24 h and the related effects were inspected by UV–visible and photoluminescence spectroscopies. Impregnation of the complex into 50–70 nm MSNs with pore size tailored around 2.9 nm depressed concentration quenching and allowed the use of complex loadings as high as 23 wt%. Sunlight irradiation caused a marked increase in the luminescence intensity.
Articolo in rivista - Articolo scientifico
Composite materials; Silica nanoparticles; Nanostructures; Luminescence; Optical materials
English
2014
146
178
185
none
Moretti, E., Talon, A., Storaro, L., LE DONNE, A., Binetti, S., Benedetti, A., et al. (2014). Concentration quenching and photostability in Eu(dbm)3phen embedded in mesoporous silica nanoparticles. JOURNAL OF LUMINESCENCE, 146, 178-185 [10.1016/j.jlumin.2013.09.059].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/47364
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