Abstract
Selectively excited emission and Tb3+Ce3+ energy transfer in Y3Al5O12:Tb,Ce (YAG:Tb,Ce) at room temperature were studied. The selective excitation included a 266.0-nm laser pulse. The processes of Tb3+Ce3+ radiative and nonradiative energy transfer occur simultaneously in YAG:Tb,Ce. The mechanism of nonradiative energy transfer from the Tb3+ D35 and D45 levels to the Ce3+ D3/22 state was found to be the dipole-dipole interaction. The average critical transfer distances R0 were 15.1 A for D35(Tb3+) and 15.4 A for D45(Tb3+), respectively. The rates and efficiencies were obtained.
| Original language | English |
|---|---|
| Pages (from-to) | 10633-10639 |
| Number of pages | 7 |
| Journal | Physical Review B |
| Volume | 39 |
| Issue number | 15 |
| DOIs | |
| State | Published - 1989 |