White-light generation and full-color in single-phase garnet-based phosphors

• The novel garnet-based phosphors were synthesized by solid state reaction and investigated the luminescent properties.
• The311/122-YAMSO:Ce3 +, Mn2 + phosphors exhibit a blue emission of Ce3 + ion and a orange-red emission of Mn2 + ion.
• The emitting colors can be tuned from cool to warm white by adjusting the Mn2+ concentration through energy transfer.

Presently considerable interest in single-phase white-emitting for ultraviolet light-emitting diodes is stimulated. Here we report the effective single-phase phosphors based on YAG-garnet structure, which exhibit varied hues from blue through white and eventually orange by tuning the relative proportion of Ce3 +/Mn2 + excited at ultraviolet.

White-light generation and full-colors were obtained in single-phase garnet-based Y3Al5 − 2xMgxSixO12:Ce3 +, Mn2 + (Mg2 +–Si4 + replacing Al(1)3 +–Al(2)3 + in garnet-Y3Al5O12 host lattice on octahedron and tetrahedral sites, x = 1 and 2) phosphors using energy transfer principle.Figure optionsDownload as PowerPoint slide