Photo and electroluminescence behavior of Tb(ACAC)3phen complex used as emissive layer on organic light emitting diodes

Rino, L.; Simões, W.; Santos, Gilmar Geraldo dos; Fonseca, Fernando Josepetti; Andrade, Adnei Melges de; Deichmann, Vitor Angelo Fonseca; Akcelrud, Leni; Pereira, L.

doi:10.1016/j.jnoncrysol.2008.09.022

Cited by 11 publications

(8 citation statements)

References 4 publications

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“…Therefore, to increase the quantum yield, increasing the fluorescence signal can only be achieved by reducing the rate of nonradiative decay. Figure 8a shows that there are four main emission lines peaking at about 491, 547, 588 and 622 nm, corresponding to the 4f-4f transitions ( 5 D 4 → 5 F 6 , 5 D 4 → 7 F 5 , 5 D 4 → 7 F 4 and 5 D 4 → 7 F 3 ) of Tb 3+ ions, respectively, which is consistent with the previous literature [8,9,40,41]. The inset graph represents the excitation schematic.…”

Section: Fluorescent Properties Of Ln Ln 3+ -Si M-ln 3+ and M-ln 3+ -Sisupporting

confidence: 89%

“…The direct absorption of Ln 3+ ions is weak, so the Ln 3+ emissive state is achieved through the excitation of a coordinated organic ligand and the subsequent energy transfer from its triplet state to the metal ions by a dipole-dipole exchange mechanism [9]. However, these complexes cannot be used directly in some practical applications due to poor thermal stability and weak mechanical properties, which limit their durability and processability.…”

Section: Introductionmentioning

confidence: 99%

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Tb3+/Eu3+ Complex-Doped Rigid Nanoparticles in Transparent Nanofibrous Membranes Exhibit High Quantum Yield Fluorescence

Lu¹,

Wang²,

Huang³

et al. 2020

Nanomaterials

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In this study, transparent membranes containing luminescent Tb3+ and Eu3+ complex-doped silica nanoparticles were prepared via electrospinning. We prepared the electrospun fibrous membranes containing Tb(acac)3phen- (acac = acetylacetone, phen = 1,10-phenanthroline) and/or Eu(tta)3phen- (tta = 2-thenoyltrifluoroacetone) doped silica (M-Si-Tb3+ and M-Si-Eu3+) and studied their photoluminescence properties. The fibrous membranes containing the rare earth complexes were prepared by electrospinning. The surface morphology and thermal properties of the fibrous membrane were studied by atomic force microscopy (AFM), thermogravimetric analysis (TGA) and differential scanning calorimetry (DSC), respectively. Fluorescence spectroscopy was used to characterize the fluorescence properties of the membranes. During the electrospinning process, the PVDF transitions from the α phase to the β phase, which exhibits a more rigid structure. The introduction of rigid materials, like PVDF and silica, can improve the fluorescence properties of the hybrid materials by reducing the rate of nonradiative decay. So the emission spectra at 548 nm (Tb) and 612 nm (Eu) were enhanced, as compared to the emission from the pure complex. Furthermore, the fluorescence lifetimes ranged from 0.6 to 1.5 ms and the quantum yields ranged from 32% to 61%. The luminescent fibrous membranes have potential applications in the fields of display panels, innovative electronic and optoelectronic devices.

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Section: Fluorescent Properties Of Ln Ln 3+ -Si M-ln 3+ and M-ln 3+ -Sisupporting

confidence: 89%

Section: Introductionmentioning

confidence: 99%

Tb3+/Eu3+ Complex-Doped Rigid Nanoparticles in Transparent Nanofibrous Membranes Exhibit High Quantum Yield Fluorescence

Lu¹,

Wang²,

Huang³

et al. 2020

Nanomaterials

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“…1998年, 黄春晖研究组 [29] Rino等 [33] Yu等 [36] 将Tb(PMIP) 3 用作发光材料, DCPPO和图 2 (a) 优化Alq 3 蒸镀速率的电流密度-电压曲线, 插图为器件的电流效率-电流密度曲线; (b) 不同发光层厚度的电流密度-电压曲线, 插图为器件的电流效率-电流密度曲线 [25] (网络版彩图) [38] (网络版彩图)…”

Section: 铽配合物作为发光中心的器件unclassified

The application of rare earth complexes in organic electroluminescent devices

Chen¹,

Zhou²,

Duan³

et al. 2018

Sci. Sin.-Chim

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“…Studies on rare-earth-doped polymer-based light-emitting materials are of great interest, because they have played a pivotal role in the fields of medical diagnostics, displays, and detection systems [1]. Although the organic light emitters based on polymer materials show very good prospects, unfortunately, these materials have limited color purity and low luminous efficiency [2,3]. Therefore, finding materials with stable, narrow-linewidth, and high luminous efficiency is the purpose of much research.…”

Section: Introductionmentioning

confidence: 99%

“…Rino et al successfully prepared a Tb(acac) 3 phen complex and used it as an emissive layer in organic light Emitting diodes (OLED) [2]. Zheng developed Tb(acac) 3 AAP and worked on its photoluminescent and electroluminescent properties [3]. Bukvetskii studied the atomic structure of crystals of Tb(acac) 3 phen, which were characterized by means of the X-ray structural analysis method [7].…”

Section: Introductionmentioning

confidence: 99%

Polyvinylpyrrolidone Nanofibers Encapsulating an Anhydrous Preparation of Fluorescent SiO2–Tb3+ Nanoparticles

et al. 2019

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A novel anhydrous preparation of silica (SiO2)-encapsulated terbium (Tb3+) complex nanoparticles has been investigated. The SiO2-Tb3+ nanoparticles are incorporated in electrospun polyvinylpyrrolidone hybrid nanofibers. Transmission electron microscopy confirms that Tb3+ complexes are uniformly and stably encapsulated in or carried by nanosilica. The influence of pH on the fluorescence of Tb3+ complexes is discussed. The properties, composition, structure, and luminescence of the resulting SiO2–Tb3+ hybrid nanoparticles are investigated in detail. There is an increase in the fluorescence lifetime of SiO2–Tb3+ nanoparticles and SiO2–Tb3+/polyvinylpyrrolidone (PVP) hybrid nanofibers compared with the pure Tb3+ complexes. Due to the enhanced optical properties, the fluorescent hybrid nanofibers have potential applications as photonic and photoluminescent materials.

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Photo and electroluminescence behavior of Tb(ACAC)3phen complex used as emissive layer on organic light emitting diodes

Cited by 11 publications

References 4 publications

Tb3+/Eu3+ Complex-Doped Rigid Nanoparticles in Transparent Nanofibrous Membranes Exhibit High Quantum Yield Fluorescence

Tb3+/Eu3+ Complex-Doped Rigid Nanoparticles in Transparent Nanofibrous Membranes Exhibit High Quantum Yield Fluorescence

The application of rare earth complexes in organic electroluminescent devices

Polyvinylpyrrolidone Nanofibers Encapsulating an Anhydrous Preparation of Fluorescent SiO2–Tb3+ Nanoparticles

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