Abstract
A series of color-tunable green–red-emitting Sr3Y2(Si3O9)2: Tb3+, Eu3+ (SYSO: Tb3+, Eu3+) were synthesized by solid-state method. The crystal structure and dopant-occupied sites of SYSO: Tb3+, Eu3+ were investigated by XRD–Rietveld refinement. Furthermore, the corresponding luminescent properties were studied in detail. The energy transfer (ET) process from Tb3+ to Eu3+ was found to be resonant type via exchange interaction with ET efficiency of ~ 85%. By varying the Tb3+/Eu3+ ratio, the emitting color can be tuned from green, yellow, orange and eventually to red. The temperature-dependent PL spectra revealed that SYSO: Tb3+, Eu3+ phosphor has good thermal stability. All these properties indicate that the developed phosphor may potentially be used as single-component multicolor-emitting phosphors.
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Acknowledgements
This work is financially supported by National Natural Science Foundation of China (Nos. 21601081 and 51472132), Scientific Research Starting Foundation of Southern Medical University (No. PY2016N004), Natural Science Foundation of Guangdong Province (No. 2017A030313255), the doctor’s scientific research foundation of Hezhou University (No. HZUBS201504) and the project to enhance the scientific research ability of young teachers in colleges and universities of Guangxi (No. 2017KY0653). The corresponding author (X.G. Zhang) sincerely thanks his beloved, Miss. Lucia (Yingcong) Chen (Guangzhou Science Technology and Innovation Commission, China), for her help in polishing the article.
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Zhang, X., Mo, F., Wu, ZC. et al. Achieving green–red-tunable emission through Tb3+–Eu3+ energy transfer in Sr3Y2(Si3O9)2: Tb3+, Eu3+ phosphors. J Mater Sci 53, 3613–3623 (2018). https://doi.org/10.1007/s10853-017-1746-6
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DOI: https://doi.org/10.1007/s10853-017-1746-6