Abstract
In this work we report the results of our investigations on luminescence properties in the visible spectral range of composite materials based on polymer matrices doped with nano-sized crystals activated by Pr 3+ ions. In particular, we investigated the visible emission of YF 3 , LaAlO 3 , Al 2 O 3 and Y 2 O 3 nanopowders activated with Pr 3+ ions, as well as PMMA-based composites doped with particles of the best luminescent properties. The basic structural characterization of the developed samples was performed, followed by versatile optical characterization, focused on measurements and analysis of excitation and luminescence spectra and fluorescence dynamics profiles. The comparison of spectroscopic features of developed materials enabled discussion of the influence of crystalline and polymer environment on luminescent properties of resulting materials as well as consideration of potential applicability of developed materials in white light emitters. • Pr3+-doped nanocrystals exhibit excellent luminescent properties in the visible. • Nanocrystals incorporated into PMMA matrix keep their original optical properties. • Active ions are shielded from the interactions with the phonons of polymer matrix. • Polymers doped with active nanoparticles could be a new class of white light sources.
Published Version
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