Organic light-emitting diodes (OLEDs) are unique light sources with a promising potential even beyond display and lighting applications. The low-temperature processability of organic materials allows the fabrication of organic devices on plastic substrates, enabling deformable optoelectronic devices. In this talk, we present our group's progress on these deformable OLEDs. First of all, we report on a device architecture leading to fully encapsulated stretchable OLEDs with high performance. A straightforward yet highly effective fabrication method is provided based on laser-patterned substrates and stress-relieving layers. Secondly, we report on a revised architecture for OLED-based health-monitoring sensors that can measure blood oxygen level and heart rate. Finally, we introduce key engineering made for ultralow power consumption in these sensors.
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