Lin H.-C.Yang C.-Y.Das S.Lu C.-H.2019-05-132019-05-13201400027820https://scholars.lib.ntu.edu.tw/handle/123456789/407378A series of newly developed color-tunable Ca3La 6(SiO4)6: Ce3+, Tb3+ phosphors were successfully prepared in this study. The crystal structures of the prepared phosphors were revealed to be hexagonal with space group P6 3/m, and the lattice parameters were evaluated via utilizing the Rietveld refinement method. Upon excitation at 288 nm, the emission spectra of Ce3+and Tb3+ ions co-doped Ca3La 6(SiO4)6 phosphors included a blue emission band and several emission lines. The blue emission band with a peak at 420 nm originated in the f-d transitions of Ce3+ ions, and the emission lines in the range of 450-650 nm were assigned to the 5D4 ¡÷ 7FJ (J = 6, 5, 4, 3) transitions of Tb3+ ions. Increasing the doping content of Tb3+ ions considerably strengthened Tb3+ emission and reduced Ce3+ emission owing to the energy transfer from Ce3+ to Tb3+ ions. The mechanism of the energy transfer was confirmed to be a dipole-dipole interaction. The effective energy transfer from Ce3+ to Tb 3+ ions caused a color shift from purplish-blue to yellowish-green. Color-tunable Ca3La6(SiO4)6: Ce 3+, Tb3+ phosphors have the potential to be utilized in light-emitting diodes with proper modulation of the amount of Tb3+ ions. ? 2014 The American Ceramic Society.[SDGs]SDG7journal article10.1111/jace.128462-s2.0-84901913241https://www.scopus.com/inward/record.uri?eid=2-s2.0-84901913241&doi=10.1111%2fjace.12846&partnerID=40&md5=4fd82ed7958846b9b3eea1713f443651