A strategy for developing deep-UV phosphor: Sr3AlO4F: Tb3+/Sm3+

Li, Minhong; Lv, Zhifan; Ren, Chao; Jiang, Haiyan; Li, Wei-Na; Shi, Jinsheng

doi:10.1007/s10854-015-3626-7

Cited by 6 publications

(1 citation statement)

References 29 publications

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“…For the rare earth family, trivalent Tb 3+ ions have been widely studied due to 5 D 3 → 7 F J transitions in blue region and 5 D 4 → 7 F J transitions in green region ( J = 6, 5, 4 and 3) based on different doping concentration [17,18]. It can effectively transfer its energy to activators to improve the luminescence intensity of co-activators [19]. Eu 3+ is an effective red component due to its 5 D 0 → 7 F 2 electric dipole transition, which subsititute sites without symmetry center.…”

Section: Introductionmentioning

confidence: 99%

Tunable Luminescence in Sr2MgSi2O7:Tb3+, Eu3+Phosphors Based on Energy Transfer

Wang

Deng

et al. 2017

Materials

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A series of Tb3+, Eu3+-doped Sr2MgSi2O7 (SMSO) phosphors were synthesized by high temperature solid-state reaction. X-ray diffraction (XRD) patterns, Rietveld refinement, photoluminescence spectra (PL), and luminescence decay curves were utilized to characterize each sample’s properties. Intense green emission due to Tb3+ 5D4→7F5 transition was observed in the Tb3+ single-doped SMSO sample, and the corresponding concentration quenching mechanism was demonstrated to be a diople-diople interaction. A wide overlap between Tb3+ emission and Eu3+ excitationspectraresults in energy transfer from Tb3+ to Eu3+. This has been demonstrated by the emission spectra and decay curves of Tb3+ in SMSO:Tb3+, Eu3+ phosphors. Energy transfer mechanism was determined to be a quadrupole-quadrupole interaction. And critical distance of energy transfer from Tb3+ to Eu3+ ions is calculated to be 6.7 Å on the basis of concentration quenching method. Moreover, white light emission was generated via adjusting concentration ratio of Tb3+ and Eu3+ in SMSO:Tb3+, Eu3+ phosphors. All the results indicate that SMSO:Tb3+, Eu3+ is a promising single-component white light emitting phosphor.

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Section: Introductionmentioning

confidence: 99%