| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1888294 | Radiation Measurements | 2013 | 4 Pages |
•Energy transfer from Nd3+ to Er3+ in NaLaF4:Er3+, Nd3+ samples has been observed.•Er3+ luminescence bands appear as result of different energy transfer mechanisms.•Possible luminescence and energy transfer mechanisms have been offered.
In the course of this research several NaLaF4 samples doped with different Er3+ and Nd3+ concentrations have been synthesized. For these samples photoluminescence spectra, kinetics and excitation spectra have been measured. It has been found that when samples containing Nd3+ and Er3+ impurities are excited in specific Nd3+ bands not only Nd3+ but also Er3+ luminescence bands appear. The studies of the decay kinetics show that there is an energy transfer from Nd3+ to Er3+, moreover “green” and “red” Er3+ luminescence bands appear as result of two different energy transfer mechanisms. In addition, photoluminescence processes in Nd3+ ions are investigated. Based on the obtained experimental results luminescence and energy transfer processes in NaLaF4:Er3+, Nd3+ material are discussed.
