From Event: SPIE Organic Photonics + Electronics, 2015
In this talk, we will discuss recent innovations in organic light-emitting materials and devices. First, we will report on organic light-emitting diodes (OLEDs) based on thermally activated delayed fluorescence (TADF). We will show that devices based on the emitter 4CzIPN doped in a novel ambipolar host can yield a current efficacy of 81 cd/A and a maximum external quantum efficiency of 26.5%. These devices exhibit a low turn-on voltage of 3.2 V at 10 cd/m2, as well as reduced efficiency roll-off at high current densities. The performance of these devices is comparable to that of electrophosphorescent devices based on organic-metallic compounds that contain precious metals such as Iridium. In a second part we will report on highly efficient green-emitting organic light-emitting diodes (OLEDs) fabricated on shape memory polymer (SMP) substrates for flexible electronic applications. SMPs are a class of mechanically active materials that can change and store shape upon activation by a stimulus. The combination of the unique properties of SMP substrates with the light-emitting properties of OLEDs pave to the way for new applications, including conformable smart skin devices, minimally invasive biomedical devices, and flexible lighting/display technologies. Finally, we will present OLEDs fabricated on substrates made from cellulose nanocrystals (CNC) and discuss how such substrates can reduce the environmental footprint of printable organic electronics.
Conference Presentations are recordings of oral presentations given at SPIE conferences and published as part of the proceedings. They include the speaker's narration with video of the slides and animations. Most include full-text papers. Interactive, searchable transcripts and closed captioning are now available for 2018 presentations, with transcripts for prior recordings added daily.
Search our growing collection of more than 16,000 conference presentations, including many plenaries and keynotes.