Luminescence and Energy Transfer Characteristics of TbOCl

Berdowski, P.A.M.; Herk, J. van; Jansen, Lisinka; Blasse, G.

doi:10.1002/pssb.2221250145

Cited by 11 publications

(4 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In contrast to that of B, the emission intensity of Tb 3+ was much lower. It was speculated that a very small quantity of Ce 3+ and Tb 3+ could be oxidized to Ce 4+ and Tb 4+ in the OmimPF 6 system, which was the killer of the emission. , But in the OmimBF 4 system, the Ce 4+ and Tb 4+ were suppressed by the H 3 BO 3 stem from the BF 4 − . Therefore, the two nanocrystals synthesized in OmimPF 6 and OmimBF 4 systems exhibited different luminescent properties.…”

Section: Resultsmentioning

confidence: 99%

Ionic Liquid-Based “All-in-One” Synthesis and Photoluminescence Properties of Lanthanide Fluorides

et al. 2008

View full text Add to dashboard Cite

A facile route to the synthesis of LnF 3 nanocrystals has been accomplished in three ionic liquids (ILs) (OmimPF 6 , OmimBF 4 , and BmimPF 6 ). The partial hydrolysis of PF 6and BF 4was utilized to introduce a new fluoride source. Uniform LnF 3 (Ln ) La, Ce, Pr, Nd, Sm, Eu, Er), Tb 3+ -doped CeF 3 , and Eu 3+ -doped LaF 3 nanocrystals could be obtained in a large scale, and the products were up to 0.15 g per 10 mL solvents.In the "all-in-one" systems, the ILs acted as solvents, reaction agents, and templates. The effects of cosolvents, cationic and anionic parts of the ILs on the nanocrystals morphologies, and sizes were studied. The optical properties of the nanocrystals synthesized in different ILs were discussed. The simple and large-scale synthesis of these unique luminescent inorganic nanocrystals will find great potential applications in biolabels, lightemitting diodes (LEDs), and redox luminescent switches.

show abstract

Section: Resultsmentioning

confidence: 99%

Ionic Liquid-Based “All-in-One” Synthesis and Photoluminescence Properties of Lanthanide Fluorides

et al. 2008

View full text Add to dashboard Cite

show abstract

“…by energy transfer and migration studies. [7][8][9][10] More recently, semi-empirical calculations have also revealed the importance of the (RO) nþ n complex cations in determining the spectroscopic properties of rare earth oxycompounds. 11 Magnetic coupling between R 3+ ions is usually weak resulting in a Curie-Weiss type paramagnetic behaviour down to low temperatures.…”

Section: Introductionmentioning

confidence: 99%

Interplay between crystal structure and magnetic susceptibility of tetragonal ROBr

Hölsä

Lastusaari

Niittykoski

et al. 2002

Phys. Chem. Chem. Phys.

View full text Add to dashboard Cite

The average magnetic susceptibilities for trivalent rare earth (R 3+ ) ions in polycrystalline tetragonal rare earth oxybromides (ROBr, R ¼ Ce-Nd, Sm, Eu, and Tb-Yb) were measured between 2 and 298 K. The susceptibilities of all ROBr follow the paramagnetic Curie-Weiss behaviour down to low temperatures except for SmOBr and EuOBr where the effect of crystal field was observed already above 200 K. The observed effective magnetic moments m eff (RT) were generally higher than the free ion values. For the heavier R 3+ ions (Ho 3+ and Er 3+ ) m eff was found to be less than the free ion value due to crystal field mixing in the opposite way. The Weiss constant y was found to be negative for all ROBr, suggesting antiferromagnetic (AFM) ordering at lower temperatures but only SmOBr (SmOCl) and DyOBr (DyOCl) show such ordering at 5(8) and 8(11) K, respectively. The increasing interlayer distance between adjacent (RO) nþ n layers from ROCl to ROBr and within the ROBr series lowers the Ne ´el temperature. AFM ordering thus depends on the 3D interactions while 2D interactions have negligible effect. The temperature dependence of the experimental paramagnetic susceptibility for each ROBr was simulated with the aid of the van Vleck formalism based on the wave functions and energy level values obtained from spectroscopic data. Lattice expansion and consequent modifications in crystal field caused discrepancies at higher temperatures.

show abstract

“…[57] To elucidate if the luminescence does not result from the respective rare-earth (RE) compounds and if the Eu and Tb ions really have been adsorbed at the grain boundaries of β-Si3N4 and β-Ge3N4 a comparison of the luminescence spectra of Eu-Si3N4 and Ge3N4 and EuCl3 x 6 H2O is shown in Figure S5 and S6. A comparison between Tb-β-Si3N4 and TbOCl [58] is also shown in Figure S14.…”

Section: Luminescence Propertiesmentioning

confidence: 99%

Eu- and Tb-adsorbed Si3N4 and Ge3N4: Tuning the colours with one luminescent host

Braun

Mereacre

Chen

et al. 2021

Preprint

View full text Add to dashboard Cite

Phosphor-converted white light-emitting diodes (pc-LEDs) are emerging as an indispensable solid-state light source for the next generation lighting industry and display systems due to their unique properties. Nitrides with their wide-ranging applicability due to their intriguing structural diversity, their auspicious chemical and physical properties represent an essential component in industrial and materials applications. Here, we present the successful adsorption of Eu and Tb at the grain boundaries of bulk β-Si3N4 and β-Ge3N4 by a succeeding combustion synthesis. The adsorption of europium and terbium and the synergic combination of both resulted in intriguing luminescence properties of all compounds (red, green, orange and yellow). Especially the fact that one host can deliver different colours renders Eu,Tb-β-M3N4 (M= Si, Ge) as prospective chief components for future light emitting diodes (LEDs). For the elucidation of the RE adsorption on the electronic properties of β-Si3N4 and β-Ge3N4, Mott-Schottky (MS) measurements were conducted for the bare and RE adsorbed samples. Further insight on the electronic structure of β-Si3N4 and β-Ge3N4 were obtained via density functional theory (DFT) computations.

show abstract

Luminescence and Energy Transfer Characteristics of TbOCl

Cited by 11 publications

References 9 publications

Ionic Liquid-Based “All-in-One” Synthesis and Photoluminescence Properties of Lanthanide Fluorides

Ionic Liquid-Based “All-in-One” Synthesis and Photoluminescence Properties of Lanthanide Fluorides

Interplay between crystal structure and magnetic susceptibility of tetragonal ROBr

Eu- and Tb-adsorbed Si3N4 and Ge3N4: Tuning the colours with one luminescent host

Contact Info

Product

Resources

About