Europium complex doped luminescent solar concentrators with extended absorption range from UV to visible region

Luminescent solar concentrators employing new Eu(TTA)3phen‐containing parylene films

“…The comparison with literature data shows that S1600 sample is characterized by a power conversion efficiency (η LSC ) 50% higher than conventional Eu(TTA) 3 phen‐based LSCs. This result is even more important taking into account that the Eu(TTA) 3 phen surface concentration of sample S1600 (2.24 × 10 −4 g/cm 2 ) is much lower than that of the literature samples (4.2 × 10 −4 g/cm 2 ).…”

Lanthanides in Solar Energy Conversion

“…Either simple coordination compounds or inorganic-organic hybrids have been tested to this end. Another comparative study focused on [Eu(tta) 3 (phen)] and [Eu(tta) 3 (dpbt)] (Scheme 1) doped at 1.6 wt% into polyvinyl butyral (PVB) with a refractive index of 1.51 (Wang et al, 2011d). One advantage of lanthanide complexes compared to all-organic dyes is very limited reabsorption due to the excitation into the ligand levels, which generates large Stokes' shifts.…”

“…The power conversion efficiency is given by (Wang et al, 2011d): (4), and G , the geometry efficiency of the host material related to its absorption, is also set to 1 (no absorption).…”

Eu3+-Based Bridged Silsesquioxanes for Transparent Luminescent Solar Concentrators

“…46 Optical conversion efficiency values of Ln 3+ −based LSCs were calculated for selected excitation wavelengths, namely 8.8%, for Tb 3+ −based poly(vinylalcohol) incorporating salicylic acid, 47 9%, for Eu(tta) 3 .ephen (ephen=5,6−epoxy−5,6−dihydro [1,10] phenanthroline) embedded into a tri-ureasil hybrid, 48 and 4.3% and 1.7%, for Eu 3+ - 28 and Tb 3+ -doped 35 BS, respectively. More recently, flexible waveguiding cylindrical LSCs based on plastic optical fibers coated with Eu 3+ -doped organic-inorganic hybrids were demonstrated with optical conversion efficiency and power conversion efficiency values of 20.7±1.3% and 2.5±0.2%, respectively.…”