Dy3+ → Eu3+ Energy Transfer in SrLaGa3O7:Dy3+/Eu3+ Phosphors

In the presented research, we prepared dysprosium(III)/europium(III) doped SrLaGa3O7 phosphors via the calcinations at 1400 degrees C for 3 h and researched their characteristics using X-ray diffraction and fluorescence spectrophotometer. The dysprosium (III) -> europium(III) energy transfers were surveyed and the mechanisms were discussed. The reducing dysprosium(III) luminescence and lifetimes following the enhancements of europium(III) concentration confirm the existence of dysprosium(III) -> europium(III) energy transfer. In this process, the quadrupole-quadrupole interaction plays the key role. Exciting at 365 nm, dysprosium(III)/europium(III) codoped SrLaGa3O7 phosphors provide tunable luminescence by reason of the energy transfer process. (C) 2021 The Electrochemical Society ("ECS"). Published on behalf of ECS by IOP Publishing Limited.