Abstract
Experimental evidence of energy transfer from Pr3+ to Yb3+ were presented by the excitation spectra and emission spectra in LaF3:Pr3+,Yb3+. Temperature-dependent infrared emission and fluorescence decay curves have been measured to investigate the quantum cutting mechanism and energy transfer efficiency of the Pr3+–Yb3+ couple. Upon excitation of Pr3+ at 442 nm, Yb3+ emits two near-infrared photons around 1000 nm through two resonant energy transfer processes from Pr3+ to Yb3+ and the maximum total quantum efficiency reaches 161.6%. The excellent luminescence properties of the Pr3+–Yb3+ codoped LaF3 indicate its potential application in improving the energy conversion efficiency of the silicon based solar cells by converting one blue photon to two near-infrared ones.
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Deng, K., Wei, X., Wang, X. et al. Near-infrared quantum cutting via resonant energy transfer from Pr3+ to Yb3+ in LaF3 . Appl. Phys. B 102, 555–558 (2011). https://doi.org/10.1007/s00340-011-4413-7
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DOI: https://doi.org/10.1007/s00340-011-4413-7