Luminescence of trivalent praseodymium in oxides and fluorides

Energy transfer in Pr3+ and Mn2+ co-doped SrB6O10 and SrB4O7

“…The emission bands corresponding to 1 S 0 -1 I 6 , 3 P 2,1,0 (around 404 nm) and the 1 S 0 -1 D 2 (around 340 nm) transitions in the SrB 6 O 10 :Pr 3+ are in the same wavelength ranges with the excitation bands corresponding to 6 A 1g -4 E g À 4 A 1g (around 408 nm) and the 6 A 1g -4 T 2g (around 350 nm) transitions in the SrB 6 O 10 :Mn 2+ , respectively. This firsttime observation of 1 S 0 emission in SrB 6 O 10 :Pr 3+ is a confirmation of the previous suggestions [6] concerning hosts suitable for realization of PCE. But no second photon from 3 P 0 or 1 D 2 levels was observed, even at low temperature.…”

“…Though the spectral overlaps between the Mn 2+ excitation and the Pr 3+ emission were observed in both SrB 6 …”

Energy transfer in LaMgB5O10:Pr3+,Mn2+ under VUV excitation

“…1. In order to meet this condition, a week crystal field with a large coordinate number of the cation to be substituted and with a large cation-anion distance is required [9,10]. LaMg-B 5 O 10 :Pr 3+ has been reported to show PCE [11].…”

Doped nanoparticles for optoelectronics applications

“…It was pointed out that this efficiency can be improved if one UV photon emitted by Hg will excite two (or even more) visible photons in a cascade process. Such situation was found for Pr 3+ ions in several host materials [21][22][23][24][25][26].…”