White OLED using β-diketones rare earth binuclear complex as emitting layer

Quirino, Welber G.; Legnani, Cristiano; Cremona, M.; Lima, Patrícia P.; Júnior, Severino Alves; Malta, O.L.

doi:10.1016/j.tsf.2005.08.185

Cited by 40 publications

(20 citation statements)

References 18 publications

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“…Sensitization of Ln 3+ (with most attention being directed to Eu 3+ and Tb 3+ ) occurs via the ligand triplet state. In fact, the combination of these two lanthanide ions in a binuclear complex has generated white light in a triple-layer OLED [169]. More recently, white electroluminescence has been obtained from a single europium complex, where the ligand emits a broad band at $500 nm and the 5 [171], specifically for their response to photonic excitation in the VUV range, with in view their application in PDPs.…”

Section: Organic Light-emitting Diodesmentioning

confidence: 99%

Lanthanide Luminescence in Solids

Tanner

2010

Lanthanide Luminescence

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A tutorial introduction to the spectra of lanthanide ions is given. The chapter begins with a brief comparison of luminescence of lanthanide ions (Ln 3+ ) in the solid, liquid, and gas phases. Then a description of the importance of nonradiative versus radiative processes is made. The various types of transition of lanthanide ions encountered are then introduced: 4f N -4f N ; 4f N -4f NÀ1 5d; charge transfer; host band-to-band; and defect site or impurity transitions. Reference is briefly made to the spectra of dipositive ions. The luminescence of lanthanide ions in non-lanthanide hosts is examined, and the importance of locating the relative positions of Ln 3+ energy levels relative to the host band gap is stressed. Some of the various upconversion phenomena, including second harmonic generation, twophoton absorption, ground state/excited state absorption, energy transfer upconversion, and photon avalanche, are then described with reference to Ln 3+ and Ln 3+ -TM n+ (transition metal) systems. The experimental distinctions of which particular process is operative in a given system are explained by considering the power, concentration, and lifetime dependences, and the upconversion excitation spectrum. Some applications of lanthanide luminescence are briefly reviewed and a mention of the luminescence in nanomaterials is also included.

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Section: Organic Light-emitting Diodesmentioning

confidence: 99%

Lanthanide Luminescence in Solids

Tanner

2010

Lanthanide Luminescence

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“…Hetero-dilanthanide complex containing Eu(III) and Tb(III) centers with 4,4,4-trifluoro-1-phenyl-1,3-butanedione (btfa) and acatylacetone (acac) terminal ligands, respectively, connected by 4′,4″″(1,4-phenylene)-bis-(2,2′:6,2″-terpyridine) bridging ligand has been reported, so far [16]. In this communication, we report syntheses of new hetero-dilanthanide complexes containing 6,6,7,7,8,8, terminal ligands and bpm as bridging ligand.…”

Section: Introductionmentioning

confidence: 99%

New hetero-dilanthanide complexes containing Ln1(fod)3 and Ln2(fod)3 fragments (Ln=Pr–Nd; Nd–Sm; Eu–Tb and Ho–Er) linked by bis-diimine bridging ligand

Irfanullah

Iftikhar

2010

Inorganic Chemistry Communications

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“…The lanthanides (Ln) have been widely used in variety of photonic applications, for example color TVs, light-emitting diodes (LEDs), solid-state lasers, scintillators, the color rendering of lightings, electric lamps, and optical fiber amplifiers [1][2][3][4]. However, lanthanide can hardly be & Firas J. Kadhim dr.firas1990@yahoo.com applied to organic material-based photonic components and devices because lanthanides are insoluble in organic materials [5].…”

Section: Introductionmentioning

confidence: 99%

Photoluminescence analysis for terbium β-diketonate complex-based silica xerogel matrices

Kadhim

Twej

Mahdi

et al. 2015

J Sol-Gel Sci Technol

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In this work, luminescent complex, terbium (III) bdiketonate (C 24 H 16 F 9 O 8 S 3 Tb), was prepared and incorporated into silica matrix by ordinary sol-gel method. The starting precursor which provide silica matrices was tetraethyl orthosilicate (SiOC 2 H 5 ) 4 . The experimental conditions have been adopted, so that the sample formation via sol-gel route was started at neutral pH, whereas the final pH value was normalized to three before reaching gel point. The spectroscopic analysis of terbium b-diketonate complexes-based xerogel matrices as a function of Tb ?3 concentrations has been realized using UVvisible absorption, (FTIR) spectroscopy and luminescence measurement. The luminescence behavior of Tb 3? ions can be improved in such matrices. The complex can be incorporated into the silica matrix at the same time as the hydrolysis and condensation reaction of the silanes start. The green emission of Tb 3? ions at 544 nm was clearly observed and indicates the good stability of Tb complex in silica sol-gel matrices. Graphical AbstractKeywords Sol-gel Á Silica matrix Á Terbium b-diketonate complex Á Luminescence

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White OLED using β-diketones rare earth binuclear complex as emitting layer

Cited by 40 publications

References 18 publications

Lanthanide Luminescence in Solids

Lanthanide Luminescence in Solids

New hetero-dilanthanide complexes containing Ln1(fod)3 and Ln2(fod)3 fragments (Ln=Pr–Nd; Nd–Sm; Eu–Tb and Ho–Er) linked by bis-diimine bridging ligand

Photoluminescence analysis for terbium β-diketonate complex-based silica xerogel matrices

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