Novel Composite Layer Based on Electrospun Polymer Nanofibers for Efficient Light Scattering

Abstract

We fabricated a PAN (polyacrylonitrile) NF (nanofiber)-embedded composite layer to adjust the light-control layer in light-emitting-diode (LED) and organic-light-emitting-diode (OLED) lighting systems with unique optical characteristics, for effective light scattering. The newly designed light-control composite layers with a composition of PAN NF/SU-8 exhibited a change in the optical properties, which was identified by the diameter control of the NF using a simple process. The change in the optical properties was largely dependent on the embedded NF's features. Therefore, the NF can be applied in different types of lighting systems, depending on each lighting device's purpose.

Highly flexible transparent self-healing composite based on electrospun core–shell nanofibers produced by coaxial electrospinning for anti-corrosion and electrical insulation

“…However, the optical properties of self-healing core-shell nanofibers can be improved by embedding the nanofibers into a transparent composite layer, such as PDMS and epoxy-based negative photoresist SU-8, as demonstrated in our previous studies. 29,41 First, both the R-PAN and C-PAN nanofibers were co-electrospun onto a substrate (i.e. an ITO glass and a steel substrate) attached on a drum collector (Fig.…”

“…Note that T can be increased not only by shortening the deposition time but also by reducing the embedded fiber diameter as our previous study (not studied here) where PAN nanofiber-embedded SU-8 composite was studied for LED and OLED application. 41 Furthermore, this self-healing nanofiber-embedded composite can be used without a substrate by detaching the composite from the latter, as shown in Fig. 5e.…”

High‐Transmittance and High‐Haze Composite Particle‐Free Optical Diffusers Enabled by Polymerization‐Induced Phase Separation

“…prepared particle‐free composite layers based on electrospun polymer nanofibers for efficient light scattering, which show great application potential in LEDs. [ 4 ] Similar composite electrospun layers were demonstrated by Tang et al to largely enhance the angular color uniformity of remote phosphor‐converted LEDs. [ 19 ] Gomard and coworkers adopted one‐step microcellular foaming based on supercritical CO 2 to fabricate thin porous films, enabling a large photoluminescence (PL) intensity enhancement for quantum dot (QD) layers.…”

“…Optical diffusers are kinds of materials that can achieve uniform light distribution under concentrated light sources, which are widely used in plenty of optoelectronic devices for effective light management, including liquid crystal panels, light‐emitting diodes (LEDs), and solar cells. [ 1–6 ] An optical diffuser with combined high transmittance and high haze is desirable for optoelectronic devices. A typical optical diffuser consists of resin matrix and scattering particles including TiO 2 , ZnO, ZrO 2 , and SiO 2 .…”

Ultrasensitive, Label Free, Chemiresistive Nanobiosensor Using Multiwalled Carbon Nanotubes Embedded Electrospun SU-8 Nanofibers

“…SU-8 is available in different viscosities and can be diluted to desired viscosity using a customized thinner. SU-8 photoresist based nanofibers have been recently reported [ 60 ] and positioning of single nanofiber using electrostatic self-assembly has also been demonstrated [ 32 ]. However SU-8 inherently is insulating in nature.…”