White Light Emission and Enhanced Color Stability in a Single-Component Host.

Eu ion can be effectively sensitized by Ce ion through an energy-transfer chain of Ce-(Tb) -Eu, which has contributed to the development of white light-emitting diodes (WLEDs) as it can favor more efficient red phosphors. However, simply serving for WLEDs as one of the multicomponents, the design of the Ce-(Tb) -Eu energy transfer is undoubtedly underused. Theoretically, white light can be achieved with extra blue and green emissions released from Ce and Tb. Herein, the design of the white light based on these three multicolor luminescence centers has been realized in GdBO. It is the first time that white light is generated via accurate controls on the Ce-(Tb) -Eu energy transfer in such a widely studied host material. Because the thermal quenching rates of blue, green, and red emissions from Ce, Tb, and Eu, respectively, are well-matched in the host, this novel white light exhibits superior color stability and potential application prospect.