Abstract
Abstract In this paper, a europium complex, Eu(TTA) 3 Dpbt (TTA = thenoyltrifluoroacetonate, Dpbt = 2-(N,N-diethylanilin-4-yl)-4,6-bis(3,5-dimethylpyrazol-1-yl)-1,3,5-triazine), with extended absorption range is incorporated into polyvinyl-butyral (PVB) to fabricate luminescent solar concentrators (LSCs) on the face of K9 glass. This kind of LSC can absorb the light in the UV and the blue region and is free of self-absorption. External quantum efficiency of the LSC is measured at different wavelength. Under a solar simulator (AM1.5G), efficiency of Eu(TTA) 3 Dpbt doped LSC is 11% higher than that of Eu(TTA) 3 Phen doped LSC (0.176%), resulting from the absorption of Eu(TTA) 3 Phen which is limited within UV region. It can be seen from this result that extending absorption region of lanthanide complexes can be used to further enhance efficiency of lanthanide complex doped LSC, besides these complexes are without self-absorption because of their large Stokes shift.
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