Apr 25, 2016: According to a recent paper published in the journal Nano Letters, nanostructures found in fireflies aid to boost OLED efficiency. The OLED technology can be improved drastically by imitating nanostructures found in fireflies, found a study conducted by Korean researchers from KAIST Institute for Optical Science and Technology and Department of Bio and Brain Engineering.
Fireflies for OLED technology improvement
Fireflies are regarded as one of the topmost glowing efficient insects as compared to other varied kinds of bioluminescent insects. This is mostly due to the presence of nanostructures in the firefly’s lantern that aids in enhancing the conspicuous visual signalling.
The research team showed that asymmetric microstructures and longitudinal nanostructures present in fireflies could be imitated onto OLEDs with the help of polydimethylsiloxane (PDMS) oxidation geometry-guided resist reflow and replica molding.
The innovative firefly enthused OLEDs external quantum efficiency (EQE) was increased by 61%, and demonstrated side-enhanced super-Lambertian discharge with a wide-viewing angle.
The study team proposes the wide angle illumination advocate how the hierarchical structures could advance the acknowledgment of firefly optical courtship signals over a wide-angle variety.