19.4: Large Area p‐i‐n Type OLEDs for Lighting

Tomita, Yuto; May, Christian; Toörker, Michael; Amelung, Joörg; Eritt, Michael; Loöffler, Frank; Luber, C.; Leo, Karl; Walzer, Karsten; Fehse, Karsten; Huang, Qiang

doi:10.1889/1.2785481

Cited by 9 publications

(5 citation statements)

References 12 publications

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“…2 where a standard ITO and aluminium-doped ZnO (zinc oxide) is compared. 7 Both electrodes allow similar performance (including lifetime, which is not shown in Fig. 2).…”

Section: Pin-oled Technologymentioning

confidence: 93%

PIN‐OLEDs for active‐matrix‐display use

Blochwitz‐Nimoth¹,

Langguth²,

Murano³

et al. 2010

J Soc Info Display

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Abstract— Novaled's PIN‐OLED® technology allows for highly efficient, temperature stable, and long‐lived OLEDs suited for a variety of display applications. This paper delivers an overview about Novaled's state of the art, including top‐ and bottom‐emitting structures. It is discussed how PIN‐OLEDs give rise to an increased manufacturing yield. The main focus of this paper is the development of white OLEDs for display use. When the RGBW color‐filter approach is used in combination with white OLEDs, the resulting full‐color OLED display is able to deliver high color quality and remain highly power efficient. For such a case, the manufacturing infrastructure of OLEDs for lighting can be used. We use tandem architectures, bottom‐ and top‐emission architectures, and developed specific high‐temperature stable OLED stacks. The importance of matching color coordinates of the white OLED and the targeted display white color point is of outstanding importance. Results have mainly been achieved under the German‐funded project CARO and the European‐funded project AMAZOLED.

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“…2 where a standard ITO and aluminium-doped ZnO (zinc oxide) is compared. 7 Both electrodes allow similar performance (including lifetime, which is not shown in Fig. 2).…”

Section: Pin-oled Technologymentioning

confidence: 93%

PIN‐OLEDs for active‐matrix‐display use

Blochwitz‐Nimoth¹,

Langguth²,

Murano³

et al. 2010

J Soc Info Display

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“…The model is validated by comparison to experimental data for OLEDs (Figure 3, Ref. [14], Figure 4, Ref. [13]).…”

Section: Model Validation: Comparison With Datamentioning

confidence: 98%

21‐3: Closed‐Form Expression for the Current‐Voltage Characteristics of OLEDs

Ahmed

2024

Symp Digest of Tech Papers

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The development of OLED displays is a non‐ergodic process in which there is continuous novel change; and comprehending emitters that are evolving requires new theory, or at least modification of that which is already possessed. For the first time, a new data‐validated closed‐form physics‐based expression is derived for the I‐V characteristics of OLEDs in this paper. Two parameters emerge from the new model: liminal current and liminal voltage. Both parameters are expressed in terms of device and material parameters, allowing a device engineer to intuitively design experiments to target low voltage operation OLEDs. Robust parameter extraction methods are proposed and validated with experimental data.

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“…However, in common with the first thin film devices, most OLEDs still contain Indium Tin Oxide (ITO) as the ‘transparent’ electrode. Given the drive towards large area devices (both OLEDs and organic solar cells ), the non‐flexible nature of ITO and the dwindling supply of indium, there has been an increasing focus on the development of alternative transparent conducting electrodes. Metal oxides , conductive polymers , thin metal films , metal grids , graphene sheets and carbon nanotubes have all been investigated as potential substitutes for ITO.…”

Section: Introductionmentioning

confidence: 99%

ITO-free top emitting organic light emitting diodes with enhanced light out-coupling

Yambem

Ullah

Tandy

et al. 2013

Laser & Photonics Reviews

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Bottom emitting organic light emitting diodes (OLEDs) can suffer from lower external quantum efficiencies (EQE) due to inefficient out-coupling of the generated light. Herein, it is demonstrated that the current efficiency and EQE of red, yellow, and blue fluorescent single layer polymer OLEDs is significantly enhanced when a MoO x (5 nm)/Ag(10 nm)/MoO x (40 nm) stack is used as the transparent anode in a top emitting OLED structure. A maximum current efficiency and EQE of 21.2 cd/A and 6.7%, respectively, was achieved for a yellow OLED, while a blue OLED achieved a maximum of 16.5 cd/A and 10.1%, respectively. The increase in light out-coupling from the topemitting OLEDs led to increase in efficiency by a factor of up to 2.2 relative to the optimised bottom emitting devices, which is the best out-coupling reported using solution processed polymers in a simple architecture and a significant step forward for their use in large area lighting and displays.

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19.4: Large Area p‐i‐n Type OLEDs for Lighting

Cited by 9 publications

References 12 publications

PIN‐OLEDs for active‐matrix‐display use

PIN‐OLEDs for active‐matrix‐display use

21‐3: Closed‐Form Expression for the Current‐Voltage Characteristics of OLEDs

ITO-free top emitting organic light emitting diodes with enhanced light out-coupling

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