Simulating excited-state absorption spectra in upconverting lanthanide doped nanoparticles: KY<inf>3</inf>F<inf>10</inf>:Er<sup>3+</sup> (2022)
High-resolution absorption and laser-excited fluorescence studies of KY3F10:Er3+ core-only nanoparticles are presented. A total of 49 crystal-field energy levels, distributed amongst 13 multiplets of the Er3+ ion, have been deduced for the C4v point group symmetry centre in this material. A parametrized, single-electron crystal-field calculation provides an excellent approximation to the experimental data with optimized crystal fit parameters that are comparable to the bulk KY3F10:Er3+ crystal. Simulated spectra, based upon wavefunctions derived from the crystal-field calculations, unequivocally demonstrate that excited-state absorption is the predominant upconversion mechanism in this material – agreeing well with upconversion excitation spectra obtained for Yb3+ co-doped samples.
CitationSolanki PS, Balabhadra S, Reid MF, Wells JPR (2022). Simulating excited-state absorption spectra in upconverting lanthanide doped nanoparticles: KY<inf>3</inf>F<inf>10</inf>:Er<sup>3+</sup>. Journal of Luminescence. 251. 119126-119126.
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ANZSRC Fields of Research34 - Chemical sciences::3403 - Macromolecular and materials chemistry::340303 - Nanochemistry
34 - Chemical sciences::3403 - Macromolecular and materials chemistry::340304 - Optical properties of materials
34 - Chemical sciences::3406 - Physical chemistry::340606 - Photochemistry
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