Multicolor-tunable materials have attracted extensive interest due to their unique advantages in applications of lighting and displays. In this paper, energy transfer from Ce3+ to Tb3+ occurred and the effective energy transfer efficiency (ηETE) of Ce3+-Tb3+ has been calculated to be as high as 36%. To obtain multicolor-tunable emissions, Eu3+ ions were successfully introduced into Ce3+–Tb3+ codoped Sr3La6(SiO4)6 samples. Furthermore, an energy transfer process from Ce3+ to Eu3+ ions has also been demonstrated by an energy transfer bridge of Tb3+. Meanwhile, we achieved the precise adjustment of purple, green, orange and red emissions of Sr3La6(SiO4)6: Ce3+, Tb3+, and Sr3La6(SiO4)6: Ce3+, Tb3+, Eu3+. In addition, Sr3La6(SiO4)6: Ce3+, Tb3+, Eu3+ phosphors exhibited a good thermal stability: their integrated emission intensities at 450 K still kept more than 90% of their initial intensity at room temperature. Therefore, these results might provide a novel multicolor-tunable phosphor for lighting and display application.
Multicolor-tunable emission Ce3+–Tb3+–Eu3+thermal stability energy transfer
This is a preview of subscription content, log in to check access.
This work is financially supported by the Science
and Technology Program of Guangzhou, China
(201804010257, 201707010324), Key Platforms and
Research Projects of Department of Education of
Guangdong Province (2016KTSCX031, 2017KTSC
X054), National Natural Science Foundation of
China (Grant Nos. 51602063). This work was also
supported by the Youth Innovation Talents Program
of Guangzhou Maritime University (F410515)
M.H. Fang, S. Mahlik, A. Lazarowska, M. Grinberg, M.S. Molokeev, H.S. Sheu, J.F. Lee, and R.S. Liu, Angew. Chem. Int. Ed. 58, 7767 (2019).CrossRefGoogle Scholar
S.A. Zhang, W.X. Lin, Q.F. Li, Z.F. Mu, W.F. Li, Y.X. Li, Y. Li, and F.G. Wu, Spectrochim. Acta. A 219, 110 (2019).CrossRefGoogle Scholar
W. Xia, Y. Zhang, J. Xiong, S. Hu, J. Yu, Y. Zhang, Y. Wan, and J. Yang, CrystEngComm 21, 339 (2019).CrossRefGoogle Scholar
G.X. Zhang, J. Zhang, Y.J. Liu, J.Y. Si, X.M. Tao, and G.M. Cai, J. Alloys Compd. 797, 775 (2019).CrossRefGoogle Scholar