Optimization of carrier mobility in luminescence layers based on europium β-diketonates in hybrid light-emitting structures

Бочков, М. А.; Vitukhnovsky, A. G.; Тайдаков, И. В.; Vashchenko, Andrey A.; Katsaba, A. V.; Ambrozevich, S. A.; Brunkov, P. N.

doi:10.1134/s1063782614030051

Cited by 11 publications

(2 citation statements)

References 6 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Although the carrier transporting ability is believed as one of the main drawbacks of EL Eu 3+ complexes, 49 on the basis of trap-free space charge limited current (SCLC) model, charge mobility of Eu-FDPO was calculated as 5.4 Â 10 À7 and 7.9 Â 10 À8 cm 2 V À1 s À1 for electron and hole, respectively, which is the best result among lanthanide complexes reported so far. 39,88 The electron mobility (m e ) of this polymer was even close to the value of conventional electron transporting materials, e.g. tris(8hydroxyquinolinate) aluminum(III) (Alq 3 , m e ¼ 1.4 Â 10 À6 cm 2 V À1 s À1 ).…”

Section: Electrical Performancesupporting

confidence: 64%

A unique white electroluminescent one-dimensional europium(iii) coordination polymer

Wang

Wei

et al. 2015

J. Mater. Chem. C

View full text Add to dashboard Cite

show abstract

Section: Electrical Performancesupporting

confidence: 64%

A unique white electroluminescent one-dimensional europium(iii) coordination polymer

Wang

Wei

et al. 2015

J. Mater. Chem. C

View full text Add to dashboard Cite

show abstract

“…On the other hand, luminescence efficiency can be adjusted by changing the energies of S 1 and T 1 as well as the excited states' lifetimes [16][17][18]. There are many studies aimed at the investigation of the dependence of these photophysical properties on minor chemical structure change [19][20][21].…”

Section: Introductionmentioning

confidence: 99%

Dynamics of the Ligand Excited States Relaxation in Novel β-Diketonates of Non-Luminescent Trivalent Metal Ions

Polikovskiy

Korshunov

Gontcharenko

et al. 2023

IJMS

View full text Add to dashboard Cite

Complexes emitting in the blue spectral region are attractive materials for developing white-colored light sources. Here, we report the luminescence properties of novel coordination compounds based on the trivalent group 3, 13 metals, and the 1-phenyl-3-methyl-4-cyclohexylcarbonyl-pyrazol-5-onate (QCH) ligand. [M(QCH)3] (M = Al, Ga, and In), [M(QCH)3(H2O)] (M = Sc, Gd, and Lu), [Lu(QCH)3(DMSO)], and [La(QCH)3(H2O)(EtOH)] complexes were synthesized and structurally characterized by a single-crystal X-ray diffraction study. It has been found that the luminescence quantum yields of the ligand increase by one order of magnitude upon metal coordination. A significant correspondence between the energies of the ligand’s excited states and the luminescence quantum yields to the metal ion’s atomic numbers was found using molecular spectroscopy techniques. The replacement of the central ion with the heavier one leads to a monotonic increase in singlet state energy, while the energy of the triplet state is similar for all the complexes. Time-resolved measurements allowed us to estimate the intersystem crossing (ISC) rate constants. It was shown that replacing the Al3+ ion with the heavier diamagnetic Ga3+ and In3+ ions decreased the ISC rate, while the replacement with the paramagnetic Gd3+ ion increased the ISC rate, which resulted in a remarkably bright and room-temperature phosphorescence of [Gd(QCH)3(H2O)].

show abstract

Effect of Bonding Scandium(III) ion to 1,3-Diketones on Their Luminescent Properties

et al. 2018

View full text Add to dashboard Cite

Optimization of carrier mobility in luminescence layers based on europium β-diketonates in hybrid light-emitting structures

Cited by 11 publications

References 6 publications

A unique white electroluminescent one-dimensional europium(iii) coordination polymer

A unique white electroluminescent one-dimensional europium(iii) coordination polymer

Dynamics of the Ligand Excited States Relaxation in Novel β-Diketonates of Non-Luminescent Trivalent Metal Ions

Effect of Bonding Scandium(III) ion to 1,3-Diketones on Their Luminescent Properties

Contact Info

Product

Resources

About