We presented enhanced light extraction efficiency of organic emitting diodes (OLEDs) cells with a nano-sized diffraction grating layer. Various gratings different morphologies including linear, cubic, hexagonal and quasiperiodic patterns were fabricated by multiplexing interference exposure on an azobenzene thin film. The effect layer device performances luminous properties quantum was investigated. In contrast to periodic patterns, the structures leading broadband resulted in improved...

We synthesized cesium lead-halide perovskite colloidal nanocrystals using the hot injection method for wide-color-gamut low-cost displays. An efficient surface defect passivation technique was applied to further improve optical performance of green and red nanocrystals. The prepared nanocrystal solutions were formulated into inkjet printable homogeneous inks uniformly printed on substrate with appropriate control. They formed color conversion layers quantum dot organic light-emitting diode...

The drying process of inkjet-printed organic light-emitting diodes (OLEDs) is influenced by both ink properties and external environmental factors, which ultimately affect the film profile. First, we conducted a detailed investigation time based on changes in boiling point (BP) mixed solvents analyzed correlation with Under atmospheric conditions nitrogen (N

We demonstrate selectively enhanced emission by controlling the intrachain and interchain excitons of a conjugated polymer through adjusting surface plasmons. Enhanced light from was observed coupling localized plasmon resonance with band using Ag nanoparticles. Light exploiting both increased strength dipole due to image between polaritons (SPPs). As nanostructures become complete films, increased.

Abstract Microcavity structures are used in inorganic‐, organic‐, quantum‐dot‐, and perovskite‐based electroluminescent (EL) devices to advance next‐generation displays. However, there difficulties controlling electrical characteristics patterning processes for producing different thicknesses each red, green, blue (RGB) subpixel, the issues more challenging high‐resolution display future realistic media. Here, a novel design method is presented dual‐microcavity structure that controls...

The solution process and vacuum evaporation, both fabrication methods for conventional organic light-emitting diodes (OLEDs), are intrinsically restricted with regard to their ability enhance pattern resolutions film stability outcomes. Here, we introduce a novel approach of the followed by intense pulsed light (IPL) evaporation producing high-resolution line patterns OLEDs. Through control wettability between banks microchannels via mask-free selective surface treatment, successfully...

Abstract In this study, we introduce optimization of the annealing conditions for improvement hardness and hole transporting properties high-molecular weight poly [9, 9-dioctylfluorene-co-N-(4-(3-methylpropyl)) diphenylamine] (TFB) film used as a Hole Transport Layer (HTL) Quantum-dot Light-emitting Diodes (QLEDs). As temperatures were increased from 120 °C to 150 or more, no dissolving intermixing phenomena at interface between HTL Quantum-Dot Emission (QDs EML) was observed. However, when...

Abstract Controlling of thickness profile in micro‐scale pixels via an inkjet printing process remains a challenge and strict control surface energy is required. Herein, the each substrate controlled by using CF 4 plasma treatment (CPT) to improve color conversion efficiency (CCE) printed quantum dots (QDs) layer (CCL). The bank becomes hydrophobic due fluorination, while glass hydrophilic cleaning effect CPT. Through systemic investigation polar non‐polar components energy, it found that...

To accomplish a new solid dispersion providing optimized aqueous solubility and dissolution of fenofibrate without modifying the crystalline nature hydrophobic drug, different formulations were prepared with water, polyvinylpyrrolidone (PVP) sodium lauryl sulphate (SLS) using spray-drying technique. The influence relative quantities PVP SLS on in was determined. exhibiting highest subjected to scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FT-IR), differential...

Optimization of ink-jet printing conditions quantum-dot (QD) ink by cosolvent process and improvement light-emitting diodes (QLEDs) characteristics assisted vacuum annealing were analyzed in this research. A hexane ortho-dichlorobenzene (oDCB) was optimized at the ratio 1:2, ink-jetting properties using Ohnesorge number based on parameters viscosity surface tension. However, we found that these cosolvents systems cause an increase boiling point a decrease vapor pressure, which influence QD...

It was demonstrated through a comparison between the spin-coated and inkjet-printed quantum-dot light-emitting diodes' (QLED) performance analysis outcomes that annealing temperature of zinc oxide nanoparticle (ZnO NP) electron transport layer (ETL) optimized for intense pulsed light (IPL) via post-treatment differs depending on film-formation method used. For naturally dried ZnO NP ETL formulated without annealing, different film morphologies were observed according to spin coating inkjet...

Drop-on-demand (DOD) electrohydrodynamic (EHD) jet printing uses a nozzle and pulsated electric fields to eject small ink droplets of functional material the appointed spot substrate at time, which offers solutions high resolution patterning for fabrication printed electronics, bioengineering, display. Because EHD connects fine drops yield pattern, it is essential realize throughput by generating quickly reliably. In this study, characteristics jetting frequency were experimentally...

In this study, we introduce a flexible metal grid transparent electrode fabricated using lift-off process. This consisting of thin film with punched-like pattern by hole array was 8 um separations. The separation inkjet-printed etching resistant ink droplets controlled in order to investigate the relationship between its electrical and optical properties electrodes. aluminum areal density defined predict different arrays. A high uniform transmittance spectrum appears extend broadly into UV...

Variation of wall voltage and priming effect due to an auxiliary electrode are investigated with the aim attaining a better understanding discharge phenomenon in ac plasma display panel electrode. A periodic positive pulse, which is applied during afterglow, reduced charges accumulated on sustain electrodes so that current decreased increase auxiliary-pulse voltage. In addition, pulse influenced particles optical output was not changed as much lowered. Based these results, modified...

This paper proposes a modified alternating current plasma display panel (PDP) in which gold nanoparticles are incorporated into bare MgO layer to enhance the performance of protective layer. The proposed structure's ion-induced secondary electron yield, is expressed gamma value ( value) greater than that layer; as result, operating voltage decreases by 10 V 20 V. integration emitted infrared (IR) light and power density consumed discharge both increased, but ratio increment for case IR...

All-inorganic halide perovskite nanocrystals are next-generation materials with excellent optical and semiconductor properties suitable for display applications. In this study, we introduce an optimized ultrasonication method the high-capacity synthesis of highly luminescent inorganic nanocrystals. After CsPbBr3 superior performance by method, anion exchange was performed to tune stable emission wavelength over entire visible range. particular, maximum photoluminescence wavelengths red green...

We investigated surface plasmon-waveguide hybrid resonances for enhancement of light emission in polymer light-emitting diodes (PLEDs). Hybrid waveguide-plasmon the visible range waveguide mode and near IR plasmons were observed by incorporation hexagonal Ag dot arrays. Considerable overlap between wavelength PLEDs an array with a lattice constant 500 nm was observed. Because enhanced extraction Bragg scattering modes, photoluminescence (PL) electroluminescence (EL) increased 70% 50%, respectively.

This study experimentally investigated process mechanisms and characteristics of newly developed xenon flash lamp lift-off (XF-LO) technology, a novel thin film method using light to heat conversion layer (LTHC) (XFL). XF-LO technology was used polyimide (PI) films 8.68–19.6 μm thickness. When XFL energy irradiated the LTHC 2.61 J/cm2, PI completely released from carrier substrate. However, as intensity increased, it became increasingly difficult release Using thermal gravimetric analysis...