Morphology-controllable synthesis, energy transfer and luminescence properties of Ce3+/Tb3+/Eu3+-doped CaF2 microcrystals

Zhao, Beijun; Shen, Dingyi; Tan, Qinyue; Tang, Jianfeng; Zhou, Xianju; Hu, Shanshan; Yang, Jun

doi:10.1007/s10853-017-0822-2

Cited by 7 publications

(1 citation statement)

References 41 publications

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“…5a, which was caused by Eu 3+ -O 2− CTB and allowable transition 4f 8 → 4f 7 5d 1 of Tb 3+ Within the range of 300–500 nm, a series of very weak excitation peaks caused by f → f transition of Tb 3+ ions can be observed. The emission peaks of Tb 3+ and Eu 3+ may be located at 589 nm and 613 nm, respectively, in order to exclude the interference from the Tb 3+ emission, the emission wavelength of 704 nm is selected as the monitoring wavelength, the strong excitation peaks at 248 nm and a series of excitation peaks caused by the superposition of the f → f transition from Tb 3+ and the 4f → 4f transition of the Eu 3+ are also observed 12,13 . The excitation peaks corresponding to Tb 3+ were observed when the Eu 3+ characteristic emission was monitored.…”

Section: Resultsmentioning

confidence: 99%

Rare earth ion Tb3+ doped natural sodium feldspar (NaAlSi3O8) Luminescent properties and energy transfer

Halmurat

Yusufu

Wang

et al. 2019

Sci Rep

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In this study, Tb3+—doped natural sodium feldspar (NaAlSi3O8) phosphors have been successfully prepared using high−temperature solid—state method with natural sodium feldspar as a substrate. Energy—dispersive X—ray spectrometry analysis (EDX) of NaAlSi3O8 showed that 0.03 wt% of Eu element was present, and elemental distribution mapping analysis showed that the distribution of trace Eu in minerals was aggregated. The crystal structure and luminescence properties of the natural sodium Eu—containing feldspar and synthetic sodium feldspar NaAlSi3O8:Eu3+, Tb3+ phosphors are discussed in detail. The crystal structure analysis of the samples showed that the Na+ in the natural matrix was partly replaced by the doped Tb3+. Studies on the photoluminescence properties of the samples indicate that Eu does not form a luminescent center in the natural mineral, however, the strong characteristic peak of Eu3+ at 615 nm appears after doping with Tb3+ and the peak at 615 nm increases with the increase of Tb3+ concentration. According to the above spectral results, the energy transfer from Tb3+ to Eu3+ is obtained. Through the measurement and analysis of color coordinates, it is found that with the increase of Tb3+ concentration, the luminescence color of the samples can be regulated in the green to red region. NaAlSi3O8:Eu3+ Tb3+ phosphors has potential application value.

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Section: Resultsmentioning

confidence: 99%