Towards efficient terbium-based solution-processed OLEDs: Hole mobility increase by the ligand design

Kozlov, Makarii I.; Aslandukov, Andrey; Vashchenko, Andrey A.; Медведько, А. В.; Aleksandrov, A. E.; Latipov, Egor V.; Goloveshkin, Alexander S.; Lypenko, D. A.; Tameev, A. R.; Utochnikova, Valentina V.

doi:10.1016/j.jallcom.2021.161319

Cited by 7 publications

(7 citation statements)

References 28 publications

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Section: Resultsmentioning

confidence: 70%

“…The introduction of the neutral ligand in the complex leads to a two-fold decrease in the photoluminescence quantum yield in comparison to Tb(czb) 3 . 27 At the same time, it also leads to the lifetime decrease, which, as we previously showed, improves the performance of OLEDs. 13 Electroluminescence properties of Tb(czb) 3 TDZP Tb(czb) 3 TDZP was tested as an emission layer in an OLED with the heterostructure ITO/PEDOT:PSS/poly-TPD/EML/TPBi/LiF/ Al, which was already approved for lanthanide coordination compounds.…”

Section: Photoluminescence Properties Of Tb(czb) 3 Tdzpmentioning

confidence: 70%

“…The Tb(czb) 3 TDZP mixed-ligand terbium complex was obtained by an exchange reaction, as in ref. 27 and 29. The composition of the obtained compound was confirmed by powder X-ray diffraction, 1 H NMR spectroscopy, IR spectroscopy, and thermal analysis.…”

Section: Terbium Complex Synthesis and Characterizationmentioning

confidence: 99%

“…IR spectra were compared for the series of compounds TDZP, Tb(czb) 3 TDZP and Tb(czb) 3 ; the latter was obtained by us earlier. 27,31 The Tb(czb) 3 TDZP spectrum shows the presence of aromatic C-H bonds at 3100-2800 cm −1 , CvN bonds of the neutral TDZP ligand at 1550-1450 cm −1 , and CvO bonds of the carboxylate anion at 1750-1650 cm −1 , 1350-1250 cm −1 , 1000-800 cm −1 , and 700-600 cm −1 . The absence of O-H bonds at 3600-3200 cm −1 that could correspond to the solvent confirms the absence of coordinated solvent molecules.…”

Section: Terbium Complex Synthesis and Characterizationmentioning

confidence: 99%

“…A Tb(czb) 3 -based OLED previously showed the highest luminance among solution-processed terbium-based OLEDs. 27 The neutral ligand (TDZP, [1,2,5]thiadiazolo[3,4-f ][1,10]phenanthroline) contains an electron-accepting thiodiazole fragment to increase the electron transport properties and reduce the lifetime of the excited state. 13,28 This neutral ligand is utilized within the terbium complex, which showed record-breaking luminance and efficiency for Tb-based OLEDs.…”

Section: Introductionmentioning

confidence: 99%

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A 50% increase in the terbium-based OLED luminance through reducing the excited-state lifetime due to the introduction of gold nanoparticles

et al. 2022

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Section: Resultsmentioning

confidence: 70%

Section: Photoluminescence Properties Of Tb(czb) 3 Tdzpmentioning

confidence: 70%

Section: Terbium Complex Synthesis and Characterizationmentioning

confidence: 99%

Section: Terbium Complex Synthesis and Characterizationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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A 50% increase in the terbium-based OLED luminance through reducing the excited-state lifetime due to the introduction of gold nanoparticles

et al. 2022

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Europium(II) Complexes with Substituted Tris(2‐aminoethyl)amine/Triethanolamine Ligand and their Application in Blue Spin‐Coated Organic Light‐Emitting Diodes

Huo

et al. 2022

Advanced Optical Materials

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Luminescent Eu(II) complexes with characteristic d–f transitions have potential applications in many fields, especially organic light‐emitting diodes (OLEDs), due to their satisfactory advantages including short excited‐state lifetimes, 100% theoretical exciton utilization efficiency and tunable emission colors. Up to now, most light‐emitting layers in OLEDs are typically fabricated through high‐vacuum thermal evaporation process, which is uneconomical for large‐area and multi‐dopant devices. In this work, eight Eu(II) complexes with substituted tris(2‐aminoethyl)amine or triethanolamine ligands are designed and synthesized, and their structural and photophysical properties are studied. These complexes exhibit tunable maximum emission wavelengths in the range of 437–553 nm and high photoluminescence quantum yields up to 75%. Furthermore, this work demonstrates the application of Eu(II) complex in solution‐processed OLEDs with high efficiency and luminance for the first time. The optimized device show a maximum external quantum efficiency of 9.2% and a maximum luminance of 1780 cd m−2 with an emission peak at 485 nm.

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Responsivity and photo-transient response of Tb/Al/p-Si heterostructure solar detectors

Gaballah,

Karmalawi

2023

J Opt

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Towards efficient terbium-based solution-processed OLEDs: Hole mobility increase by the ligand design

Cited by 7 publications

References 28 publications

A 50% increase in the terbium-based OLED luminance through reducing the excited-state lifetime due to the introduction of gold nanoparticles

A 50% increase in the terbium-based OLED luminance through reducing the excited-state lifetime due to the introduction of gold nanoparticles

Europium(II) Complexes with Substituted Tris(2‐aminoethyl)amine/Triethanolamine Ligand and their Application in Blue Spin‐Coated Organic Light‐Emitting Diodes

Responsivity and photo-transient response of Tb/Al/p-Si heterostructure solar detectors

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