White top-emitting organic light-emitting diodes using one-emissive layer of the DCJTB doped DPVBi layer

Kim, M.S.; Jeong, Chang Hyun; Lim, Jong Tae; Yeom, Geun Young

doi:10.1016/j.tsf.2007.08.078

Cited by 21 publications

(4 citation statements)

References 11 publications

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“…In recent years there have been many reports of glass-based top-emissive OLEDs with good performance where Ag, 7,8 Al/Ag, 9,10 LiF/Al 12 and LiF/Al/Ag [12][13][14][15][16] have been applied as the transparent cathode, often in combination with a capping layer such as N,N'-bis(naphthalen-1-yl)-N,N'-bis(phenyl)-benzidine (NPB), [10][11][12][13][14][15][16][17] N,N,N',N'-tetrakis(4-methoxyphenyl)benzidine (MeO-TPD), 9 tris(8-hydroxyquinolinato)aluminium (AlQ3) 3 , 17,18 tin-doped indium oxide (ITO), SiO 2 , 15 or ZnSe. 16,19 With this second metal electrode, a microcavity resonator is obtained that amplifies a specific wavelength range and particular emission angles 15,20,21 (acting like a Fabry-Pérot filter). As a result, spectral narrowing and an increased angle dependence of the electroluminescence are obtained, which are hard to optimize simultaneously.…”

Section: Top-emissive Oleds On Metal Foilmentioning

confidence: 99%

Optimization of the efficacy and angle dependence of emission of top-emissive organic light-emitting diodes on metal foils

et al. 2011

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Abstract. We have investigated how to optimize the efficacy and angle dependence of emission of top-emissive organic light-emitting diodes (OLEDs) based on metal foil substrates with the aim of creating efficient flexible devices for lighting and signage applications. By systematically varying the device architecture we were able to tune the optical microcavity which exists within the device structure and observe the change in performance. We paid particular attention to the effects of the metal foil roughness. We have seen that by changing the layer thickness of the poly(3,4-ethylenedioxythiophene) poly(styrenesulfonate) [PEDOT:PSS] in the device, and the substrate reflectivity and roughness we can obtain efficacies not too far from those achieved for standard bottom-emissive devices on glass substrates made with the same emitter. The angle dependence of luminance can be tuned from pointing in the forward direction via Lambertian to having a maximum at around 65• , and we have used optical modeling to help us find the optimum device structure. We conclude that (rough) metal foils are a realistic possibility for making flexible OLEDs and have demonstrated large area (up to 12 cm × 12 cm), thin film encapsulated, flexible devices. C 2011 Society of Photo-Optical Instrumentation Engineers (SPIE).

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Section: Top-emissive Oleds On Metal Foilmentioning

confidence: 99%

Optimization of the efficacy and angle dependence of emission of top-emissive organic light-emitting diodes on metal foils

et al. 2011

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“…To be more quantitative, we calculated the Förster energy transfer rate constant k ET,i given by Refractive indices were assumed to be similar (n~1.7) [27]. It is worthwhile to quantitatively compare the Förster energy transfer rates for processes A and C of Fig.9.…”

Section: Interpretation Of the Resultsmentioning

confidence: 99%

“…Refractive indices were assumed to be similar (n~1.7) [27]. It is worthwhile to quantitatively compare the Förster energy transfer rates for processes A and C of Fig.…”

Section: Interpretation Of the Resultsmentioning

confidence: 99%

White organic light-emitting diodes with an ultra-thin premixed emitting layer

et al. 2013

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“…ITO based transparent conductive electrodes demonstrate excellent optical transparency (90%) and low electrical resistivity ($10 /sq). 5,6) However, there are major limitations in using ITO films in such applications. An ITO film consists of 90% indium oxide (In 2 O 3 ).…”

Section: Introductionmentioning

confidence: 99%

Highly Conductive Flexible Multi-Walled Carbon Nanotube Sheet Films for Transparent Touch Screen

Jung¹,

Lee

Kim

et al. 2013

Jpn. J. Appl. Phys.

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Highly conductive and transparent thin films were prepared using highly purified multi-walled carbon nanotube (MWCNT) sheets. The electrical properties of the MWCNT sheet were remarkably improved by an acid treatment, resulting in densely packed MWCNTs. The morphology of the sheets reveals that continuous electrical pathways were formed by the acid treatment, greatly improving the sheet resistance all the while maintaining an excellent optical transmittance. These results encourage the use of these MWCNT sheets with low sheet resistance (450 Ω/sq) and high optical transmittance (90%) as a potential candidate for flexible display applications.

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White top-emitting organic light-emitting diodes using one-emissive layer of the DCJTB doped DPVBi layer

Cited by 21 publications

References 11 publications

Optimization of the efficacy and angle dependence of emission of top-emissive organic light-emitting diodes on metal foils

Optimization of the efficacy and angle dependence of emission of top-emissive organic light-emitting diodes on metal foils

White organic light-emitting diodes with an ultra-thin premixed emitting layer

Highly Conductive Flexible Multi-Walled Carbon Nanotube Sheet Films for Transparent Touch Screen

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