Ce~(3+)/Eu~(2+) codoped Ba_2ZnS_3: A blue radiation-converting phosphor for white light-emitting diodes

摘要

The Ce~(3+)/Eu~(2+) codoped Ba_2ZnS_3 phosphor shows intense blue absorption and tunable green-to-red emission. The energy transfer from Ce~(3+) to Eu~(2+) in this phosphor has been demonstrated to be a resonant type via an electric dipole-dipole mechanism. The Ba_2ZnS_3: Ce~(3+),Eu~(2+) phosphor would be the great potential application as a blue radiation-converting phosphor for white light-emitting diodes.