RT info:eu-repo/semantics/article
T1 Highly luminescent mixed-ligand bimetallic lanthanoid(iii) complexes for photovoltaic applications.
A1 Brito Santos, Gabriela
A1 Hernández Rodríguez, Cecilio
A1 Gil Hernández, Beatriz
A1 González Díaz, Benjamín
A1 Martín, Inocencio R.
A1 Guerrero Lemus, Ricardo
A1 Sanchiz, Joaquín
A2 Física
A2 Departamento de Física
K1 photovoltaic applications
K1 mixed-ligand bimetallic complexes
AB Six new mixed-ligand bimetallic complexes [Eu2(bz)4(tta)2(phen)2] (1), [Gd2(bz)4(tta)2(phen)2] (2), [EuTb(bz)4(tta)2(phen)2] (3), [EuGd(bz)4(tta)2(phen)2] (4), [Eu1,2Gd0,8(bz)4(tta)2(phen)2] (5) and [Eu1,6Gd0,4(bz)4(tta)2(phen)2] (6) have been prepared with the Eu3+, Gd3+ and Tb3+ ions and the benzoate (bz−), 2-thenoyltrifluoroacetonate (tta−) and the 1,10-phenanthroline (phen) ligands. The compounds combine highly efficient antennas to obtain highly luminescent complexes to enhance solar cell efficiency. The benzoate ligand has been chosen to take its advantage as a bridging ligand to end up with bimetallic complexes to study the effect of combining two metal ions in the luminescent molecule. The structure of 1 was obtained by single-crystal X-ray diffraction, and 1–6 were found to be isostructural by powder X-ray diffraction analysis. The photophysical properties were studied by the absorbance and emission spectra and emission lifetimes. The magnetic properties of 2 were studied, and we found intramolecular antiferromagnetic interactions between the Gd3+ ions. We prepared luminescent down-shifting layers (LDSL) with the 1, 3–6 complexes embedded in ethylene–vinyl–acetate and studied their effect in the external quantum efficiency (EQE) and intensity–voltage (I–V) plots of a solar mini-module. We found that LDSL containing the bimetallic complexes 3 and 6 enhance the efficiency of the solar mini-module from 11.26(3)% to 11.76(4)% (+0.52%) and to 11.44(2)% (+0.21%), respectively.
YR 2022
FD 2022
LK http://riull.ull.es/xmlui/handle/915/35833
UL http://riull.ull.es/xmlui/handle/915/35833
LA en
NO https://doi.org/10.1039/D1DT04248C
DS Repositorio institucional de la Universidad de La Laguna
RD 10-may-2024