Journal ArticleDOI
White organic light-emitting diodes based on spectral broadening in electroluminescence due to formation of interfacial exciplexes
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TLDR
In this paper, white organic light-emitting diodes (OLEDs) having spectral width of approximately 260 nm in electroluminescence (EL) in a simple bilayer structure, consisting of TPD and zinc benzothiazole, without taking recourse to complex strategies such as blending and doping.Abstract:
We demonstrate white organic light-emitting diodes (OLEDs) having spectral width of approximately 260 nm in electroluminescence (EL) in a simple bilayer structure, consisting of TPD and zinc benzothiazole, without taking recourse to complex strategies such as blending and doping. The EL is broader than the corresponding photoluminescence (PL) of both component materials and their structures. A deconvolution of PL and EL spectra shows that as large as 60% of the broad EL emission originates from multiple exciplexes formed at the interface during electrical excitation.read more
Citations
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Journal ArticleDOI
Excimer‐Based White Phosphorescent Organic Light‐Emitting Diodes with Nearly 100 % Internal Quantum Efficiency
Journal ArticleDOI
Exciplex: An Intermolecular Charge-Transfer Approach for TADF
TL;DR: The working mechanisms of the direct electroluminescence from the donor/acceptor interface and the exciplex-forming systems as cohost for the realization of high efficiency OLEDs are reviewed and discussed.
Journal ArticleDOI
White organic LEDs and their recent advancements
TL;DR: In this article, a review of various approaches to achieve white light emission from organic light emitting diodes (OLEDs), their advantages, disadvantages and recent progress is presented.
Journal ArticleDOI
Luminescent zinc(II) and copper(I) complexes for high-performance solution-processed monochromic and white organic light-emitting devices
Gang Cheng,Gang Cheng,Gary Kwok Ming So,Wai-Pong To,Yong Chen,Chi Chung Kwok,Chensheng Ma,Chensheng Ma,Xiangguo Guan,Xiaoyong Chang,Wai Ming Kwok,Chi-Ming Che +11 more
TL;DR: In this article, the synthesis and spectroscopic properties of tetranuclear zinc(II) complexes of substituted 7-azaindoles and a series of luminescent copper(I) complexes containing 7,8bis(diphenylphosphino)-7,8-dicarba-nido-undecaborate ligand are described.
Journal ArticleDOI
Mixing of Phosphorescent and Exciplex Emission in Efficient Organic Electroluminescent Devices
Vladyslav Cherpak,Pavlo Stakhira,Boris F. Minaev,Gleb V. Baryshnikov,Evgeniy Stromylo,Igor Helzhynskyy,Marian Chapran,Dmytro Volyniuk,Zenon Hotra,Zenon Hotra,Asta Dabuliene,Ausra Tomkeviciene,Lesya Voznyak,Juozas V. Grazulevicius +13 more
TL;DR: A yellow organic light-emitting diode (OLED) based on the star-shaped donor compound tri(9-hexylcarbazol-3-yl)amine, which provides formation of the interface exciplexes with the iridium(III) bis[4,6-difluorophenyl]-pyridinato-N,C2']picolinate (FIrpic) and exhibits a high external quantum efficiency.
References
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Journal ArticleDOI
Organic Electroluminescent Diodes
Ching Wan Tang,Steven A Vanslyke +1 more
TL;DR: In this article, a double-layer structure of organic thin films was prepared by vapor deposition, and efficient injection of holes and electrons was provided from an indium-tinoxide anode and an alloyed Mg:Ag cathode.
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Multilayer White Light-Emitting Organic Electroluminescent Device
TL;DR: The fabrication of a white light-emitting organic electroluminescent device made from vacuum-deposited organic thin films is reported, which was successfully obtained at low drive voltages such as 15 to 16 volts.
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Single‐layer white light‐emitting organic electroluminescent devices based on dye‐dispersed poly(N‐vinylcarbazole)
TL;DR: In this article, a single-layer white light-emitting organic electroluminescent devices were developed by using dyedispersed poly(Nvinylcarbazole) (PVK) which consists only of one polymer layer that is simply sandwiched between two electrodes, indium-tin oxide, and Mg:Ag.
Journal ArticleDOI
White-light-emitting organic electroluminescent devices based on interlayer sequential energy transfer
TL;DR: In this paper, the authors demonstrate efficient, molecular organic white-light-emitting devices using vacuum-deposited thin films of red luminescent [2-methyl-6]-2-(2,3,6,7-tetrahydro-1H, 5H-benzo [ij] quinolizin-9-yl) ethenyl]-4H-pyran-4-ylidene] propane-dinitrile (DCM2), doped into blue emitting 4, 4′ bis [
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Structures, electronic states, and electroluminescent properties of a zinc(II) 2-(2-hydroxyphenyl)benzothiazolate complex.
TL;DR: Direct evidence for the sole existence of dimeric structure in the powder and the thin film of Zn(BTZ)(2) is provided and strong intermolecular interaction may be expected to enable good electron transport properties as compared with tris(8-hydroxyquinolinato)aluminum.