Band structure and excitons in CsCdBr3

Wenzel, M.; Altwein, M.; Demirbilek, R.; Leu, B.; Heber, J.; Kübler, J.; Bleeker, B.; Meijerink, Andries

doi:10.1016/s0925-8388(99)00702-1

Cited by 8 publications

(9 citation statements)

References 4 publications

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“…4). The decay times of both levels are in the same range and equal approximately to 5 s. This value is in a good agreement with the data reported earlier by Heber and Meijerink [20].…”

Section: Resultssupporting

confidence: 90%

Energy-level calculations for Pr3+ in K2LaBr5 host

Karbowiak

Legendziewicz

Cybińska

et al. 2008

Journal of Alloys and Compounds

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“…4). The decay times of both levels are in the same range and equal approximately to 5 s. This value is in a good agreement with the data reported earlier by Heber and Meijerink [20].…”

Section: Resultssupporting

confidence: 90%

Energy-level calculations for Pr3+ in K2LaBr5 host

Karbowiak

Legendziewicz

Cybińska

et al. 2008

Journal of Alloys and Compounds

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“…The present study builds on and, in some cases, clarifies previous work on the luminescence properties and energylevel structure of Pr 3+ in CsCdBr 3 [4][5][6][7][8][9][10][11][12][13][14][15][16][17][18]. It is the first study on Pr-doped CsCdBr 3 that uses temperature dependence and comparative luminescence properties of Pr-Pr and Pr-Gd pairs to discern excited-state pair relaxation mechanisms.…”

Section: Introductionmentioning

confidence: 74%

Temperature dependence of excited-state relaxation processes of Pr3+ in Pr-doped and Pr, Gd-doped CsCdBr3

An¹,

May²

2006

Journal of Luminescence

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“…On the other hand, Yb 3+ ion spectroscopy have received considerable attention over the past years, too, because of its potential laser emission around 1 lm and also as a sensitizer of the Pr 3+ emission [10]. The results of the spectroscopic studies in this area were reported mainly by Krupa and Queffelec [2], Meijerink and co-workers [5,8,9], Dorenbos et al [3,4,6,7], Kaminskii and others [10][11][12][13][14][15][16]. Recently, selected optical behaviours [17,18] and simulation of the crystal field effect on the Pr 3+ ion in ternary chlorides were reported by us [19,20].…”

Section: Introductionmentioning

confidence: 97%

Assignment of spectroscopic properties in praseodymium-doped and praseodymium/ytterbium-co-doped ternary K2LaX5 (X=Cl, Br, I) Halides

et al. 2006

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The potassium lanthanum ternary halides are appropriate host lattices for various luminescent materials including laser devices. The lanthanum ternary halide lattice, co-doped by different lanthanide ions, can exhibit up-conversion emission in a wide spectral range from blue to red. For this purpose (Pr 3+ ) and (Yb 3+ ) ions and also co-doping by other Ln ions are promising systems. In this lecture the excited states dynamics in the praseodymium and praseodymium co-doped by ytterbium ion ternary halides will be discussed basing on the high resolution absorption, emission and emission excitation spectra at 293, 77 and 4 K as well as the decay times of the crystals with different concentrations from 2 mol% to stoichiometric of the optically active ions. Changes of the spectral properties in the range of 4f-5d and 4f-4f transitions are observed for the series of halides (Cl, Br, I).The differences in emission behavior can be explained by changes of the crystal field strengths, subtle variations of electron-phonon coupling, decrease of the phonon energies and increase of covalency. Some features in the emission vary with excitation energy and in some cases exciton emission and strong re-absorption was detected. Lowering of the emission efficiency in the concentrated systems can be due to the concentration quenching and energy migration to traps. On the other hand, formation of the polymeric chains in the structure is responsible for strong ion-ion interaction, which can promote the up-conversion process. Excitation into 1 D 2 of the Pr 3+ state leads to up-conversion emission from 3 P 0 state, whereas 940 nm pumping line used in excitation of 2 F 5/2 level of the Yb 3+ in K 2 LaCl 5 :5% Pr 3+ , 2% Yb 3+ crystal is responsible for both emission from 1 D 2 and 3 P 0 of Pr 3+ levels. Non-radiative energy transfers between Pr 3+ ions and Pr 3+ -Yb 3+ ions are observed and up-conversion mechanisms are proposed.

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Band structure and excitons in CsCdBr3

Cited by 8 publications

References 4 publications

Energy-level calculations for Pr3+ in K2LaBr5 host

Energy-level calculations for Pr3+ in K2LaBr5 host

Temperature dependence of excited-state relaxation processes of Pr3+ in Pr-doped and Pr, Gd-doped CsCdBr3

Assignment of spectroscopic properties in praseodymium-doped and praseodymium/ytterbium-co-doped ternary K2LaX5 (X=Cl, Br, I) Halides

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