Highly efficient 7,8,10-triphenylfluoranthene-doped blue organic light-emitting diodes for display application

Tseng, Ricky J.; Chiechi, Ryan C.; Wudl, Fred; Yang, Yang

doi:10.1063/1.2167814

Cited by 52 publications

(25 citation statements)

References 16 publications

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“…A molecular-scale electronic device-the first of which, a molecular diode, was proposed by Aviram & Ratner (1974)-is one in which a single molecule performs an electronic function (or an array of molecules performs the function in parallel). Organic electronics (Farchioni & Grosso 2001;Malliaras 2003;Facchetti et al 2005)-a field that originated with the discovery by Heeger, MacDiarmid and Shirakawa of electrical conduction in doped organic polymers (Chiang et al 1977)-is the use of films of molecules and polymers as the semiconducting (charge transporting) materials, electrodes or dielectric materials within electronic devices such as light emitting diodes (Hutchison et al 1999;Morteani 2003;Tseng et al 2006), field effect transistors (Kudo & Yamashina 1984;Dimitrakopoulos & Mascaro 2001;Dimitrakopoulos & Malenfant 2002;Newman et al 2004;Shankar & Jackson 2004;Panzer et al 2005) and solar cells (Gregg 2003;Gledhill et al 2005;Shaheen et al 2005).…”

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confidence: 99%

The study of charge transport through organic thin films: mechanism, tools and applications

Weiss

Kriebel

Rampi

et al. 2007

Phil. Trans. R. Soc. A.

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In this paper, we discuss the current state of organic and molecular-scale electronics, some experimental methods used to characterize charge transport through molecular junctions and some theoretical models (superexchange and barrier tunnelling models) used to explain experimental results. Junctions incorporating self-assembled monolayers of organic molecules-and, in particular, junctions with mercury-drop electrodes-are described in detail, as are the issues of irreproducibility associated with such junctions (due, in part, to defects at the metal-molecule interface).

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mentioning

confidence: 99%

The study of charge transport through organic thin films: mechanism, tools and applications

Weiss

Kriebel

Rampi

et al. 2007

Phil. Trans. R. Soc. A.

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“…To realize full-color OLED displays, red-, green-, and blue-emitting materials are required. Whereas red and green luminescent materials have been achieved in high luminance and efficiency, efficient blue emitters are still rare [2,3]. One problem associated with the dye emission in the solid state is aggregation-induced quenching: in the condensed phase, the molecules are located in immediate vicinity, which favors the formation of aggregates with ordered or random structures [4,5].…”

Section: Introductionmentioning

confidence: 99%

Luminescent tetraphenylethene-substituted silanes

Zhao

Chen

Lam

et al. 2010

Pure and Applied Chemistry

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Tetraphenylethene (TPE)-substitued silanes [(Ph 4 C=C) m Si(Ph) n , m = 3-1, n = 3-1] are designed and synthesized, and their optical, thermal, and electrochemical properties are studied. Whereas they are nonluminescent in solutions, they become highly emissive when aggregated in poor solvents (such as water) or fabricated into thin films, demonstrating a novel phenomenon of aggregation-induced emission (AIE). Their amorphous films exhibit high fluorescence quantum yields (54.6-63.7 %). They enjoy high thermal stability with 5 % weight loss occurring at 320-420 °C. Multilayer electroluminescence (EL) devices (ITO/NPB/emitter/TPBi/LiF/Al) utilizing the silanes as emitting layers are fabricated, which give deep blue EL with maximum luminance and external quantum efficiency of 5672 cd/m 2 , and 1.6 %, respectively.

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“…The HOMO and LUMO energy levels and hence the band gap (E g = 2.9 eV) of both complexes are found to be similar as listed in Table 1. The HOMO levels of 28 than that of CBP (ca. −6.0 eV).…”

Section: 24mentioning

confidence: 99%

Salen-Aluminum Complexes as Host Materials for Red Phosphorescent Organic Light-Emitting Diodes

Bae¹,

Hwang²,

Lee³

et al. 2011

Bulletin of the Korean Chemical Society

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The properties of monomeric and dimeric salen-aluminum complexes, [salen(3,5-t Bu) 2 Al(OR)], R = OC 6 H 4 -p-C 6 H 6 (H1) and R = [salen(3,5-as host layer materials in red phosphorescent organic light-emitting diodes (PhOLEDs) were investigated. H1 and H2 exhibit high thermal stability with decomposition temperature of 330 and 370 °C. DSC analyses showed that the complexes form amorphous glasses upon cooling of melt samples with glass transition temperatures of 112 and 172 °C. The HOMO (ca. −5.2 ~ −5.3 eV) and LUMO (ca. −2.3 ~ −2.4 eV) levels with a triplet energy of ca. 1.92 eV suggest that H1 and H2 are suitable for a host material for red emitters. The PhOLED devices based on H1 and H2 doped with a red emitter, Ir(btp) 2 (acac) (btp = bis(2-(2'-benzothienyl)-pyridinato-N,C 3 ; acac = acetylacetonate) were fabricated by vacuum-deposition and solution process, respectively. The device based on vacuum-deposited H1 host displays high device performances in terms of brightness, luminous and quantum efficiencies comparable to those of the device based on a CBP (4,4'-bis(Ncarbazolyl)biphenyl) host while the solution-processed device with H2 host shows poor performance.

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Highly efficient 7,8,10-triphenylfluoranthene-doped blue organic light-emitting diodes for display application

Cited by 52 publications

References 16 publications

The study of charge transport through organic thin films: mechanism, tools and applications

The study of charge transport through organic thin films: mechanism, tools and applications

Luminescent tetraphenylethene-substituted silanes

Salen-Aluminum Complexes as Host Materials for Red Phosphorescent Organic Light-Emitting Diodes

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