Researchers from France's LPICM and Université Paris-Saclay have designed new graphene-based OLED emitters that outperform previous graphene emitters.
The researchers designed green emitters based on rod-shaped nanographene materials containing C60-tBu8 materials, and incorporated these into a benchmark OLED device. The OLED devices containing the C60-tBu8 exhibited current and power efficiencies (CE and PE) of 2.27 cd·A–1, 0.28 lm·W–1 and luminance of 164 cd·m–2.
The team stated that while performance remains modest in comparison to state-of-the-art OLEDs, it outperforms previous attempts to utilize nanographenes as active materials for fluorescent OLEDs.
The researchers also fine tuned the materials, changing the number of carbon atoms to enable red and yellow-orange emitters
