Double-Faced Organic Light-Emitting Device Using Laminate Method

Minani, Takahiro; Satoh, Ryu−ichi; Okada, Hiroyuki; Naka, Shigeki

doi:10.1143/jjap.50.01bc12

Cited by 6 publications

(5 citation statements)

References 47 publications

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“…[127] Other techniques use lamination or laser transfer techniques to deposit the top electrode, which allows for monolayer functionalization as described above. [144,145] Interface Electrical Dipole Layers in OPVs…”

Section: Potential Shifts At Electrode Interface Layersmentioning

confidence: 99%

Interface Dipoles for Tuning Energy Level Alignment in Organic Thin Film Devices

Nüesch

2013

Chimia

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One of the key features of organic optoelectronic and electronic devices resides in the multilayer architecture of the device stack. The performance of the latter strongly depends on the interface quality between organic layers or at the electrode heterojunction. Apart from interface thermodynamics governing adhesion and wetting, the electronic energy levels of the organic semiconductor are affected by the interface properties in a drastic way. This mini review gives a short overview on the possibilities to adjust frontier orbital energy levels using oriented electrical dipoles at the interfaces.

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Section: Potential Shifts At Electrode Interface Layersmentioning

confidence: 99%

Interface Dipoles for Tuning Energy Level Alignment in Organic Thin Film Devices

Nüesch

2013

Chimia

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“…As a deposition technology for the solution process, roll-to-roll coating [1], slit coating [2], and spin coating [8] have attracted significant attention. On the other hand, lamination has garnered interest as an encapsulation technology, and many lamination methods have been proposed [9][10][11][12][13][14][15]. The lamination history began with Yang et al's report [9] in 2001 for double-substrate technology and Rogers et al's report [10] in 2004 for single-substrate technology.…”

Section: Introductionmentioning

confidence: 99%

“…Duggal et al reported OLEDs fabricated using a vacuum-free, direct lamination process of two PET substrates [14]. Naka et al proposed a double-faced transparent OLED made using the lamination method [15]. Several studies have also been conducted on the interfacial properties of laminated polymer diodes in chemical and mechanical aspects [16][17][18].…”

Section: Introductionmentioning

confidence: 99%

Organic Light-Emitting Diodes Laminated with a PEI Adhesion Layer

Yoo,

Moon

2023

Electronics

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For the all-solution-processed organic light-emitting diode (OLED), manufacturing the cathode and lowering the work function of the cathode are the main problems limiting their commercialization. This paper reports a two-substrate bonding technology using hot roller lamination with improvement points to solve the existing problems. Ag was used to manufacture the cathode because it is less oxidative compared to Al, which has previously been used conventionally. We tried to use polyethylene imine (PEI), which is conventionally used as an electron injection layer (EIL), as an adhesive layer for the bonding, as it has the quality of being sticky. At higher PEI concentrations, the adhesion strength increased, but the electrical properties deteriorated. Therefore, the PEI wt% was decreased and mixed with polyethylene glycol (PEG), which was reported to lower the work function of the metallic surface. The results showed that the mixed solution of PEI and PEG had good adhesion and electrical properties. The device with an interfacial layer consisting of a 0.1 wt% PEI and 0.01 wt% PEG mixture turned on at 6 V and had a maximum luminance of 2700 cd/m2. The mixed solution layer provided a similar luminous characteristic for single- and double-substrate devices, highlighting the potential of fabricating all-solution-processed OLEDs using the two-substrate bonding technology.

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“…We have been focusing on the lamination process [17][18][19][20][21], which is wet process compatible, for PLED fabrication. The laminated PLEDs are formed by laminating two substrates.…”

Section: Introductionmentioning

confidence: 99%

Additive color mixing of semitransparent laminated tandem type polymer light-emitting diodes

Morimoto

Ozawa

Naka

et al. 2021

Molecular Crystals and Liquid Crystals

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Polymer light-emitting diodes (PLEDs) are generally fabricated using the wet process. Although it is difficult to stack multiple layers by the wet process, it is compatible with the lamination process that can be used to fabricate multi-layer tandem type devices. We fabricate tandem type PLEDs composed of two transparent substrates using the lamination process. Stacked red and green PLEDs exhibit additive color mixed emission resulting in orange emission. By careful selection of materials, similar emission is observed from both substrates of the semi-transparent tandem PLEDs because the over-layer does not absorb the emission from the under-layer.

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Double-Faced Organic Light-Emitting Device Using Laminate Method

Cited by 6 publications

References 47 publications

Interface Dipoles for Tuning Energy Level Alignment in Organic Thin Film Devices

Interface Dipoles for Tuning Energy Level Alignment in Organic Thin Film Devices

Organic Light-Emitting Diodes Laminated with a PEI Adhesion Layer

Additive color mixing of semitransparent laminated tandem type polymer light-emitting diodes

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