Ce 3 + ∕ Eu 2 + codoped Ba2ZnS3: A blue radiation-converting phosphor for white light-emitting diodes

Abstract

The ${\mathrm{Ce}}^{3+}∕{\mathrm{Eu}}^{2+}$ codoped ${\mathrm{Ba}}_2\mathrm{Zn}{\mathrm{S}}_3$ phosphor shows intense blue absorption and tunable green-to-red emission. The energy transfer from ${\mathrm{Ce}}^{3+}$ to ${\mathrm{Eu}}^{2+}$ in this phosphor has been demonstrated to be a resonant type via an electric dipole-dipole mechanism. The ${\mathrm{Ba}}_2\mathrm{Zn}{\mathrm{S}}_3:{\mathrm{Ce}}^{3+},{\mathrm{Eu}}^{2+}$ phosphor would be the great potential application as a blue radiation-converting phosphor for white light-emitting diodes.