Abstract
In this talk, I will introduce our recent activity of conformable organic photonic systems. We have developed ultra-flexible and lightweight highly efficient, ultra-flexible, air-stable, three-color, organic light-emitting diodes (OLEDs). The total thickness of the devices, including the substrate and encapsulation layer, is only three micrometers, which is one order of magnitude thinner than the epidermal layer of the human skin. Due to the very thin substrate and neutral position, our device shows the highly flexibility and conformability. The OLEDs are directly laminated on the surface of skin and are used as indicators/displays. Furthermore, we have developed ultra-flexible organic imager which consists with a monolithically processed rectifying pixel and an organic photo diode. Our organic imager has pixel pitches as small as 50 µm, with resolutions of up to 262 ppi. Using our ultra-flexible organic imager, we succeed to measure the spatial photoplethysmography (PPG) mapping.
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