Effect of surface morphology of slot-die heads on roll-to-roll coatings of fine PEDOT:PSS stripes

Kim, Gieun; Shin, Dong-Kyun; Lee, Jin Young; Park, Jongwoon

doi:10.1016/j.orgel.2018.12.033

Cited by 15 publications

(18 citation statements)

References 17 publications

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“…The blue, white, and green colors represent PEDOT, PSS, and PEGME, respectively, in Figure b. PEDOT:PSS- g -PEGME copolymer not only has water resistance but also chemical resistance for water sensor application because PSS chains are cross-linked to each other, and a highly hydrophilic sulfonic acid group in PSS is substituted with PEGME by the esterification reaction between PEDOT:PSS and PEGME. − Although the film was coated on 7 × 7 cm 2 PET in this study, because the fabrication of the water sensor is based on a solution process, it is easy to fabricate water sensors with larger areas by the roll-to-roll process. − The pattern of the IR laser treatment is depicted in Figure c. The pattern width is 1 mm and the diameter of the laser beam is 20 μm.…”

Section: Resultsmentioning

confidence: 99%

Resistive Water Sensors Based on PEDOT:PSS-g-PEGME Copolymer and Laser Treatment for Water Ingress Monitoring Systems

et al. 2019

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Water sensors are a type of level sensor that can be used in various applications requiring the sensing of water levels, such as in dams, nuclear power plants, water pipes, water tanks, and dehumidifiers. In particular, water sensors in water ingress monitoring systems (WIMS) protect lives and property from disasters caused by water leakage and flooding. Here, a resistive water sensor for WIMS that incorporates poly(3,4-ethylenedioxythinophene):poly(styrene sulfonate) (PEDOT:PSS) grafted with poly(ethylene glycol) methyl ether (PEGME) (PEDOT:PSS-g-PEGME copolymer) as high-conductivity electrodes and laser-treated PEDOT:PSSg-PEGME copolymer as the low-conductivity resistive component is reported. The configuration of the water sensor is modeled as two parallel resistors (R laser treated PEDOT:PSS || R water ) when water comes into contact with the sensor surface. The two-resistor configuration exhibits a better performance in comparison with single-resistor configurations comprising only PEDOT:PSS-g-PEGME copolymer or laser-treated PEDOT:PSS-g-PEMGE copolymer. Moreover, PEDOT:PSS-g-PEGME copolymer is applied to the sensor to improve the stability of PEDOT:PSS in water. We demonstrate that the sensor can detect the water level in real time with high sensitivity and accuracy, and thus has potential in applications for monitoring water-related hazards.

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Section: Resultsmentioning

confidence: 99%

Resistive Water Sensors Based on PEDOT:PSS-g-PEGME Copolymer and Laser Treatment for Water Ingress Monitoring Systems

et al. 2019

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“…The values of surface roughness (RMS) of neat PEDOT:PSS, PEDOT:PSS/10%ZnS QDs and PEDOT:PSS/10%MoS 2 QDs film are 0.57, 0.47, and 0.69 nm, respectively. The hybrid HIL films exhibit a low surface roughness, which result in more efficient hole injection and consequently affect the HTL and device performance ( Kim et al, 2019 ; Ma et al, 2019 ).…”

Section: Resultsmentioning

confidence: 99%

Use of Hybrid PEDOT:PSS/Metal Sulfide Quantum Dots for a Hole Injection Layer in Highly Efficient Green Phosphorescent Organic Light-Emitting Diodes

et al. 2021

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In this study, we have synthesized the molybdenum sulfide quantum dots (MoS2 QDs) and zinc sulfide quantum dots (ZnS QDs) and demonstrated a highly efficient green phosphorescent organic light-emitting diode (OLED) with hybrid poly (3,4-ethylenedioxythiophene)/poly (styrenesulfonate) (PEDOT:PSS)/QDs hole injection layer (HIL). The electroluminescent properties of PEDOT:PSS and hybrid HIL based devices were explored. An optimized OLED based on the PEDOT:PSS/MoS2 QDs HIL exhibited maximum current efficiency (CE) of 72.7 cd A−1, which shows a 28.2% enhancement as compared to counterpart with single PEDOT:PSS HIL. The higher device performance of OLED with hybrid HIL can be attributed to the enhanced hole injection capacity and balanced charge carrier transportation in the OLED devices. The above analysis illustrates an alternative way to fabricate the high efficiency OLEDs with sulfide quantum dots as a HIL.

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“…Kim et. al 106 examined the impact of the scratches over slot-die head on the quality of PEDOT:PSS stripe. For the study purpose, they have chosen two similar slot-die heads; one (Head A) that has a scratch, and another (Head B) free from scratch.…”

Section: Slot-die Coating On Pixel Bank Layermentioning

confidence: 99%

Organic light emitting diodes (OLEDs) with slot-die coated functional layers

2021

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Effect of surface morphology of slot-die heads on roll-to-roll coatings of fine PEDOT:PSS stripes

Cited by 15 publications

References 17 publications

Resistive Water Sensors Based on PEDOT:PSS-g-PEGME Copolymer and Laser Treatment for Water Ingress Monitoring Systems

Resistive Water Sensors Based on PEDOT:PSS-g-PEGME Copolymer and Laser Treatment for Water Ingress Monitoring Systems

Use of Hybrid PEDOT:PSS/Metal Sulfide Quantum Dots for a Hole Injection Layer in Highly Efficient Green Phosphorescent Organic Light-Emitting Diodes

Organic light emitting diodes (OLEDs) with slot-die coated functional layers

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