&lt;title&gt;Vinylene-bridged triphenylamine dimers as an emitting material in trilayer organic electroluminescent devices&lt;/title&gt;

Pfeiffer, Steffen; Hoerhold, Hans-Heinrich; Boerner, H.; Nikol, Hans; Busselt, W.

doi:10.1117/12.332598

Cited by 9 publications

(2 citation statements)

References 6 publications

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“…On the contrary, the electron-withdrawing p -cyanophenyl moiety in 13 significantly shifts the first oxidation potential anodically. Stabilization of the cation radicals by electron-donating substituents at a distant conjugation is well documented, particularly when the moieties involved are in communication. 6b, …”

Section: Resultsmentioning

confidence: 94%

Light-Emitting Carbazole Derivatives: Potential Electroluminescent Materials

Tao

et al. 2001

J. Am. Chem. Soc.

505

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Stable carbazole derivatives that contain peripheral diarylamines at the 3- and 6-positions and an ethyl or aryl substituent at the 9-position of the carbazole moiety have been synthesized via palladium-catalyzed C-N bond formation. These new carbazole compounds (carbs) are amorphous with high glass transition temperatures (T(g), 120-194 degrees C) and high thermal decomposition temperatures (T(d) > 450 degrees C). The compounds are weakly to moderately luminescent in nature. The emission wavelength ranges from green to blue and is dependent on the substituent at the peripheral nitrogen atoms. Two types of light-emitting diodes were constructed from carb: (I) ITO/carb/TPBI/Mg:Ag and (II) ITO/carb/Alq(3)/Mg:Ag, where TPBI and Alq(3) are 1,3,5-tris(N-phenylbenzimidazol-2-yl)benzene and tris(8-hydroxyquinoline) aluminum, respectively. In type I devices, the carb functions as the hole-transporting as well as emitting material. In type II devices, either carb, or Alq(3) is the light-emitting material. Several green light-emitting devices exhibit exceptional maximum brightness, and the physical performance appears to be better than those of typical green light-emitting devices of the structure ITO/diamine/Alq(3)/Mg:Ag. The relation between the LUMO of the carb and the performance of the light-emitting diode is discussed.

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Section: Resultsmentioning

confidence: 94%

Light-Emitting Carbazole Derivatives: Potential Electroluminescent Materials

Tao

et al. 2001

J. Am. Chem. Soc.

505

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“…Many of these systems have shown amplified spontaneous emission (ASE) thresholds much lower than those of traditional dyes, mostly due to the possibility of increasing the amount of materials in the films without significant PL quenching. N,N 0 -diphenyl-N,N 0 -bis(3-methylphenyl)-(1,1 0 -biphenyl)-4,4 0 -diamine (TPD) receives significant attention serve as solid state laser material over the years due to the broad photoluminescence and the tunable wide laser wavelength range [1][2][3][4] on account of its optical properties, absorption and emission behavior [5,6]. TPD shows stimulated emission in neat films that were fabricated by spin-coating, vacuum thermal evaporation and ink-jet printing as well as the blends that is diluted in polystyrene (PS) [7][8][9][10].…”

Section: Introductionmentioning

confidence: 99%