TiO-Nanoparticle-Embedded Thin-Film Encapsulation for Blue Thermally Activated Delayed Fluorescence Top-Emitting Organic Light-Emitting Devices.

Blue thermally activated delayed fluorescence (TADF) top-emitting organic light-emitting diodes (TEOLEDs) have garnered widespread interest because of their 100% internal quantum efficiency (η) and high intensity due to microcavity effects. However, their external quantum efficiency (η) is limited by total internal reflection from the thin-film encapsulation (TFE) required by TEOLEDs and their susceptibility to moisture and oxygen. This paper introduces a novel approach in which TiO nanoparticles (NPs) are incorporated into a negative photoresist, and AlO is applied to form a nanolaminated TFE layer.

Enhancement of Light Extraction Efficiency Using Wavy-Patterned PDMS Substrates.

This study introduces an organic light-emitting diode (OLED) light extraction method using a wavy-patterned polydimethylsiloxane (PDMS) substrate created via oxygen (O) plasma treatment. A rapid fabrication process adjusted the flow, pressure, duration, and power of the O plasma treatment to replicate the desired wavy structure. This method allowed the treated samples to maintain over 90% total transmittance and enabled controlled haze adjustments from 10% to 70%.