Articles with "electroluminescence" as a keyword



High‐Performance Circularly Polarized Electroluminescence with Simultaneous Narrowband Emission, High Efficiency, and Large Dissymmetry Factor

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Published in 2022 at "Advanced Materials"

DOI: 10.1002/adma.202109147

Abstract: Organic light‐emitting diodes (OLEDs) that can simultaneously achieve narrowband emission, high efficiency, and circularly polarized luminescence remain a formidable challenge. In this study, a simple strategy is developed to address this challenge. A chiral exciplex‐forming… read more here.

Keywords: electroluminescence; high efficiency; narrowband emission; emission high ... See more keywords

Direct Observation of Spin States Involved in Organic Electroluminescence Based on Thermally Activated Delayed Fluorescence

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Published in 2017 at "Advanced Optical Materials"

DOI: 10.1002/adom.201600926

Abstract: (1 of 5) 1600926 TADF occurs in inter-[8,9] and intramolecular material systems.[4,6,10,11] In both cases, the wavefunction overlap of the two particles forming the emissive state defines the energetic difference between the singlet and triplet… read more here.

Keywords: spin states; electroluminescence; spin; magnetic field ... See more keywords

Enhanced Electroluminescence from ZnO Quantum Dot Light-Emitting Diodes via Introducing Al2O3 Retarding Layer and Ag@ZnO Hybrid Nanodots

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Published in 2017 at "Advanced Optical Materials"

DOI: 10.1002/adom.201700493

Abstract: Short-wavelength light-emitting diodes (LEDs), a prevalent research topic in modern optoelectronics, have attracted considerable attention in recent years because of their vast application potential in both civil and military domains. Herein, blue-violet LEDs are constructed… read more here.

Keywords: quantum; layer; zno; electroluminescence ... See more keywords

Review on the Electroluminescence Study of Lanthanide Complexes

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Published in 2019 at "Advanced Optical Materials"

DOI: 10.1002/adom.201801256

Abstract: Thanks to their characteristic photophysical properties, lanthanide complexes are of great value in many fields. Especially, high‐purity green and red lights from Tb(III) and Eu(III) complexes are particularly suitable for displays, and near‐infrared (NIR) emissions… read more here.

Keywords: electroluminescence study; iii iii; electroluminescence; lanthanide complexes ... See more keywords

Hybrid Electroluminescence Device for On‐Demand Single Photon Generation at Room Temperature

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Published in 2024 at "Advanced Optical Materials"

DOI: 10.1002/adom.202401879

Abstract: Recent research focused on single photon emitters (SPEs) hosted by layered semiconductors, particularly hexagonal boron nitride (hBN), has revealed a promising alternative to quantum dots (QDs) for generating single, indistinguishable photons. hBN‐based SPEs offer lower… read more here.

Keywords: generation; electroluminescence; room; room temperature ... See more keywords

Acceptor Copolymerized Axially Chiral Conjugated Polymers with TADF Properties for Efficient Circularly Polarized Electroluminescence

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Published in 2024 at "Advanced Science"

DOI: 10.1002/advs.202309031

Abstract: Chiral conjugated polymer has promoted the development of the efficient circularly polarized electroluminescence (CPEL) device, nevertheless, it remains a challenge to develop chiral polymers with high electroluminescence performance. Herein, by the acceptor copolymerization of axially… read more here.

Keywords: chiral conjugated; axially chiral; conjugated polymers; electroluminescence ... See more keywords

Photo and electroluminescence of a platinum porphyrin doping of complexes with two metal cores

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Published in 2017 at "Journal of Materials Science: Materials in Electronics"

DOI: 10.1007/s10854-017-6759-z

Abstract: In this paper, four new complexes with two metal cores [2Sm, 2Sn, 2Zn and 2Pb] were prepared and utilized as host material in in the electroluminescence (EL) devices. Devices with two metal cores and with… read more here.

Keywords: 2sm 2sn; two metal; complexes two; electroluminescence ... See more keywords
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Monoradically luminescent polymers by a super acid-catalyzed polymerization and deep-red electroluminescence

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Published in 2020 at "Science China Chemistry"

DOI: 10.1007/s11426-020-9778-9

Abstract: Luminescent radicals have received great attention recently due to their idiographic luminescent properties and potential 100% utilization efficiency of doublets under electrical excitation. However, luminescent radical polymers are rarely explored owing to their challenging molecular… read more here.

Keywords: super acid; electroluminescence; acid catalyzed; catalyzed polymerization ... See more keywords

Synthesis, photophysical, electrochemical and electroluminescence studies of red emitting phosphorescent Ir(III) heteroleptic complexes

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Published in 2017 at "Journal of Chemical Sciences"

DOI: 10.1007/s12039-017-1350-y

Abstract: Five heteroleptic, cyclometalated (C$$^{\wedge }$$∧N) Iridium(III) complexes of acetylacetone (acac) and 1-phenyl-isoquinoline (piq) derivatives, Ir(acac)(piq)$$_{2}$$2, Ir(acac)(2,4-difluoro-piq)$$_{2}$$2, Ir(acac)(4-trifluoromethyl-piq)$$_{2}$$2, Ir(acac)(4-N,N-dimethyl-piq)$$_{2}$$2, Ir(acac)(4-acetyl-piq)$$_{2}$$2, were synthesized and characterized. The ($$\text {C}^{{\wedge }}\text {N})_{2}$$C∧N)2Ir(acac) complexes in toluene showed phosphorescence ($$\uplambda _{\max… read more here.

Keywords: iii; electroluminescence; photophysical electrochemical; piq acac ... See more keywords

Electroluminescence-based quality characterization of quantum wells for solar cell applications

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Published in 2017 at "Journal of Crystal Growth"

DOI: 10.1016/j.jcrysgro.2016.10.056

Abstract: Abstract Material quality is a critical factor which determines the performance, particularly the open-circuit voltage, of multiple quantum well (MQW) solar cells. In this study, we report an electroluminescence-based characterization technique for evaluating luminescence efficiency… read more here.

Keywords: quality; quantum; electroluminescence based; electroluminescence ... See more keywords
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A series of new luminescent non-planar 1,8-naphthyridine derivatives giving coloured and close-to-white electroluminescence spectra

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Published in 2017 at "Journal of Luminescence"

DOI: 10.1016/j.jlumin.2016.09.027

Abstract: Abstract We report a synthesis of 37 new 1,8-naphthyridine based compounds having a non-planar bicyclic moiety (bicyclo[3.3.1]nonane, bicyclo[3.3.0]octane and camphor). We measured energetic characteristics (EHOMO=[−5.9; −5.4] eV, ELUMO=[−3.4; −2.4] eV and Eg_opt=[2.3; 3] eV), tested photoluminescence (PL) properties… read more here.

Keywords: luminescent non; non planar; electroluminescence; new luminescent ... See more keywords