A solvent/non-solvent system for achieving solution-processed multilayer organic light-emitting devices

Yu, Yue; Wu, Zhaoxin; He, Lin; Jiao, Bo; Hou, Xun

doi:10.1016/j.tsf.2015.07.043

Cited by 6 publications

(5 citation statements)

References 27 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…

is proportional to CDs’ concentration in the nanocomposite. Moreover, the product

is equal to the absorbance of the film at the wavelength of incident blue LED light [ 85 ]. Therefore, it can be concluded that, for a color-converting film in a device with a fixed geometry,

can be varied experimentally fabricating nanocomposites with a variable absorbance, either by regulating the thickness or the concentration of absorbing nanoparticles (i.e., the CDs loading in the nanocomposite).…”

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

One-Pot Synthesis of Dual Color-Emitting CDs: Numerical and Experimental Optimization towards White LEDs

et al. 2023

View full text Add to dashboard Cite

Carbon Dots (CDs) are fluorescent carbon-based nanoparticles that have attracted increasing attention in recent years as environment-friendly and cost-effective fluorophores. An application that can benefit from CDs in a relatively short-term perspective is the fabrication of color-converting materials in phosphor-converted white LEDs (WLEDs). In this work we present a one-pot solvothermal synthesis of polymer-passivated CDs that show a dual emission band (in the green and in the red regions) upon blue light excitation. A purposely designed numerical approach enables evaluating how the spectroscopic properties of such CDs can be profitable for application in WLEDs emulating daylight characteristics. Subsequently, we fabricate nanocomposite coatings based on the dual color-emitting CDs via solution-based strategies, and we compare their color-converting properties with those of the simulated ones to finally accomplish white light emission. The combined numerical and experimental approach can find a general use to reduce the number of experimental trial-and-error steps required for optimization of CD optical properties for lighting application.

show abstract

“…

is proportional to CDs’ concentration in the nanocomposite. Moreover, the product

is equal to the absorbance of the film at the wavelength of incident blue LED light [ 85 ]. Therefore, it can be concluded that, for a color-converting film in a device with a fixed geometry,

Section: Resultsmentioning

confidence: 99%

“…On the other hand, tuning spinning speeds seems less effective for modulating the film thickness. Indeed, achieving an accurate control on a ~μm thick film, while preserving macroscopic uniformity, complete surface coverage and microscopic surface flatness is not trivial by spin-coating [ 85 ].…”

Section: Resultsmentioning

confidence: 99%

One-Pot Synthesis of Dual Color-Emitting CDs: Numerical and Experimental Optimization towards White LEDs

et al. 2023

View full text Add to dashboard Cite

show abstract

“…The solubility parameters, δ s , of the compounds are listed in Table 1 , which were retrieved from literature. [ 55–58 ] With these δ values, the χ values can be evaluated using Equation () for the combinations of the functional compounds used.…”

Section: Resultsmentioning

confidence: 99%

“…The solubility parameter of PVK is ≈20.1 MPa 0.5 , between those of P4VP and CBP. [ 58 ] Accordingly, on the PVK layer, P4VP and CBP are readily phase separable not only laterally from each other but also vertically from the underlying PVK layer; thus, the PVK layer can also support the formation of the microinlay structure of inkjet‐printed CBP spots in the P4VP layer.…”

Section: Resultsmentioning

confidence: 99%

“…The solubility parameters, δ s , of the compounds are listed in Table 1, which were retrieved from literature. [55][56][57][58] With these δ values, the χ values can be evaluated using Equation ( 1) for the combinations of the functional compounds used. The evaluation of the χ values shows that the material combination of CBP and P4VP provides a large positive χ value, with χ CBP-P4VP being %0.33, which can induce great segregation between CBP and P4VP.…”

Section: Confocal Raman Spectra Of a Single-inkjet-printed Cbp Spot I...mentioning

confidence: 99%

See 1 more Smart Citation

Light‐Emitting Microinlaid Spots Produced through Lateral Phase Separation by Means of Simple Single‐Inkjet Printing

Park

Kim

et al. 2022

Small Science

View full text Add to dashboard Cite

High‐performance solution‐processable light‐emitting diodes (LEDs) attract much research interest due to the very high complexity of conventional vacuum‐processed LEDs. A simple single‐inkjet‐printing process using a phase‐separable material combination is presented. With single‐inkjet printing of an ink containing semiconducting compounds on a phase‐separable insulating layer, convective and Marangoni flows in sessile droplets can produce microinlaid spots through the site‐selective etching of the insulating layer and the simultaneous self‐filling of the semiconductors in the etched vacancies. As a proof of concept, microinlaid organic LEDs (OLEDs) with a spatial resolution of ≈200 dpi in a phase‐separable poly(4‐vinylpyridine) layer without any conventional preformation of bank‐like structures are produced. The fabricated green microinlaid OLEDs exhibit excellent performance with maximum brightness of ≈13 000 cd m−2 and maximum efficiency of ≈14.2 cd A−1. Moreover, large‐area inkjet‐printed OLEDs are simply realized using the microinlaid spot arrays. These results demonstrate that the inkjet‐inlay structure is a promising candidate for high‐performance next‐generation solution‐processable LEDs.

show abstract

Spin-coating

Ren

2024

Solution-Processed Organic Light-Emitting Devices

View full text Add to dashboard Cite

A solvent/non-solvent system for achieving solution-processed multilayer organic light-emitting devices

Cited by 6 publications

References 27 publications

One-Pot Synthesis of Dual Color-Emitting CDs: Numerical and Experimental Optimization towards White LEDs

One-Pot Synthesis of Dual Color-Emitting CDs: Numerical and Experimental Optimization towards White LEDs

Light‐Emitting Microinlaid Spots Produced through Lateral Phase Separation by Means of Simple Single‐Inkjet Printing

Spin-coating

Contact Info

Product

Resources

About