Optical properties of Nd^3+- and Tb^3+-doped KPb_2Br_5 and RbPb_2Br_5 with low nonradiative decay

Rademaker, K.; Krupke, William F.; Page, Ralph H.; Payne, Stephen A.; Petermann, K.; Huber, G.; Yelisseyev, A.; Исаенко, Л. И.; Roy, Utpal; Bürger, A.; Mandal, Krishna C.; Nitsch, K.

doi:10.1364/josab.21.002117

J. Opt. Soc. Am. B

2004

DOI: 10.1364/josab.21.002117

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Optical properties of Nd^3+- and Tb^3+-doped KPb_2Br_5 and RbPb_2Br_5 with low nonradiative decay

K. Rademaker

William F. Krupke

Ralph H. Page

et al.

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Cited by 88 publications

(72 citation statements)

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“…The higher wavelength cutoff for KPb 2 Cl 5 is reported to be ϳ20 m. 5,8 The transmission of the undoped KPb 2 Br 5 was found to be about 80% from 1.5 m to 25 m. The refractive index was measured to be n = 2.1 at 1.5 m. 16 The refractive index was thus found to be very close to KPb 2 Cl 5 ͑n = 2.016± 0.005͒. Similar to KPb 2 Cl 5 , KPb 2 Br 5 also is colorless, hard, rugged, and very stable in normal atmosphere.…”

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confidence: 97%

“…The quantum efficiencies for the 7 F 5 level for different Tb 3+ -doped KPb 2 Br 5 crystals were also observed to be higher than Tb 3+ -doped KPb 2 Cl 5 as described earlier. 16 In summary, we have grown both undoped and Tb 3+ -doped KPb 2 Br 5 crystals by the vertical Bridgman growth technique. A phase transition was observed around 256°C, was completely reversible, and was not found to prevent the formation of good-quality large crystals.…”

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confidence: 99%

“…15 Beck et al 15 in 1986 reported that KPb 2 Br 5 crystallizes in monoclinic form ͑space group P2 1 /c͒. The lattice parameters 16 were determined to be a = 9.256͑2͒ Å, b = 8.365͑2͒ Å, c = 13.025͑3͒ Å, and ␤ = 90.00͑3͒ 0 .…”

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confidence: 99%

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confidence: 99%

“…16 The emission was observed by pumping with a 2 m source. The room-temperature emission lifetimes were found to vary between 3 -22 ms for the 7 F 5 level ͑5 m͒ and 0.2-0.4 ms for the 7 F 4 level ͑7.9 m͒ 16 for different samples. The quantum efficiencies for the 7 F 5 level for different Tb 3+ -doped KPb 2 Br 5 crystals were also observed to be higher than Tb 3+ -doped KPb 2 Cl 5 as described earlier.…”

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Tb 3 + -doped KPb2Br5: Low-energy phonon mid-infrared laser crystal

Roy

Hawrami

Cui

et al. 2005

Applied Physics Letters

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Crystals of potassium lead bromide (KPB), a moisture-insensitive low-energy phonon laser host, were synthesized and purified. High-quality undoped and Tb3+-doped (nominal doping concentration was 5mol% TbBr3) KPb2Br5 were grown by the vertical Bridgman technique. X-ray diffraction measurements indicated that, at room temperature, the material was monoclinic with space group P21∕c, while at a high temperature the phase transformed to orthorhombic form. A reversible phase transition was observed around 256°C upon the heating and cooling cycle from differential scanning calorimetric measurements. The material was found to be transparent in the broad range from ∼0.4μmto25μm and above. The transmission spectrum of a Tb3+-doped crystal showed different absorption bands of Tb3+ at 4.5μm, 3μm, 2.3μm, and 2μm corresponding to F67–Fα7 transitions, for α=2–5. The maximum phonon energy of undoped KPb2Br5 at room temperature was determined to be 134cm−1 from Raman scattering spectrum.

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Tb 3 + -doped KPb2Br5: Low-energy phonon mid-infrared laser crystal

Roy

Hawrami

Cui

et al. 2005

Applied Physics Letters

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Theoretical Evidence of the Singlet Predominance in the Intramolecular Energy Transfer in Ruhemann's Purple Tb(III) Complexes

Moura

Oliveira

Santos

et al. 2021

Advcd Theory and Sims

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This work presents a theoretical study on the geometries and intramolecular energy transfer (IET) process of Tb3+‐complexes based on the Ruhemman's purple (RP) as ligands. Density functional theory and its time‐dependent extension are performed to examine the coordination energies and excited states using the ωB97X‐D3/MWB54/def2‐TZVP/polarizable continuum model level of theory. The inclusion of solvent effect causes a blueshift in all excitation energies, which is crucial for a better description of the electronic situations of RP isomers and coordination compounds. The IET rates are assessed for 18 Tb‐RP different compounds, each one with 44 IET pathways, also, it is obtained that the main energy transfer channel comes from the singlet state, in complete agreement with previous experimental data. The energy transfer from the singlet state is mainly composed of the nonradiative absorptions 7F6→5G6 and 7F5→5G5, representing together 97% of the total IET rate. As far as it is known, this is the first time that the solvent effect is included in the IET rates calculation, registering a step toward the development of IET analysis without any experimental or phenomenological input data.

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Contribution of Energy Transfer from the Singlet State to the Sensitization of Eu³⁺ and Tb³⁺ Luminescence by Sulfonylamidophosphates

Kasprzycka

Trush

Amirkhanov

et al. 2016

Chemistry A European J

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A series of stable lanthanide complexes Na[Ln(L) ] (Ln=La , Eu , Gd , Tb , with L=dimethyl(4-methylphenylsulfonyl)amidophosphate and dimethyl-2-naphthylsulfonylamidophosphate) were synthesized. The compounds were characterized by single-crystal X-ray diffraction, IR, absorption, and emission spectroscopy at 293 and 77 K. In contrast to the usual and well-known dominant role of the ligand triplet state in intramolecular energy transfer processes in Ln complexes, in this particular new class of Ln compounds with sulphonylamidophosphate ligands, strong experimental and detailed theoretical evidence suggest a dominant role is played by the ligand first excited singlet state. The importance of the role played by the F level in the case of the Tb compound in this process is shown. The theoretical approach for the energy transfer rates was successfully applied to the rationalization of the experimental data. The higher-lying excited levels of Eu ( D , L , G ) and Tb ( D , G , L , H , F , I ) were included in the calculations for the first time. Both the multipolar and exchange mechanisms were taken into account. The experimental intensity parameters (Ω ), emission lifetimes (τ), radiative (A ) and non-radiative (A ) decay rates, and quantum yields (theoretical and experimental) were determined and are discussed in detail.

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Optical properties of Nd^3+- and Tb^3+-doped KPb_2Br_5 and RbPb_2Br_5 with low nonradiative decay

Cited by 88 publications

References 32 publications

Tb 3 + -doped KPb2Br5: Low-energy phonon mid-infrared laser crystal

Tb 3 + -doped KPb2Br5: Low-energy phonon mid-infrared laser crystal

Theoretical Evidence of the Singlet Predominance in the Intramolecular Energy Transfer in Ruhemann's Purple Tb(III) Complexes

Contribution of Energy Transfer from the Singlet State to the Sensitization of Eu³⁺ and Tb³⁺ Luminescence by Sulfonylamidophosphates

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Optical properties of Nd^3+- and Tb^3+-doped KPb_2Br_5 and RbPb_2Br_5 with low nonradiative decay

Cited by 88 publications

References 32 publications

Tb 3 + -doped KPb2Br5: Low-energy phonon mid-infrared laser crystal

Tb 3 + -doped KPb2Br5: Low-energy phonon mid-infrared laser crystal

Theoretical Evidence of the Singlet Predominance in the Intramolecular Energy Transfer in Ruhemann's Purple Tb(III) Complexes

Contribution of Energy Transfer from the Singlet State to the Sensitization of Eu3+ and Tb3+ Luminescence by Sulfonylamidophosphates

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Contribution of Energy Transfer from the Singlet State to the Sensitization of Eu³⁺ and Tb³⁺ Luminescence by Sulfonylamidophosphates