Abstract
The Cr3+:KSc(WO4)2 crystal was grown by top seed solution method. The absorption and luminescence spectra were investigated. The absorption cross section σa is 1.16×10−19cm−2 at 469nm for the 4A2→4T1 transition and 4.98×10−20cm−2 at 684nm for the 4A2→4T2 transition, respectively. The emission cross section σe of 4T2→4A2 transition is 4.86×10−20cm2 at 916nm with FWHM of 200nm and fluorescence lifetime is 19.83μs. Based on the absorption and emission spectra, the crystal field strength Dq, the Racah parameters B and C, the effective phonon energy ħω and the Huang-Rhys factor S were calculated. Cr3+ ions in KSc(WO4)2 crystal occupy the weak crystal field sites and have stronger coupling to crystal lattice.
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