Molecular Glass Mixtures Potentials for OLED
The molecular glass mixture concept brings a lot to the table:
1. The non-crystallizable character of these materials can have a big impact on device stability.
The opportunity to decouple material crystallization tendency with their transition temperature will make it possible to optimize characteristics such as charge transport in more meaningful ways
2. Balance of hole and electron transport can be easily achieved through control of substituents composition, leading to high quantum efficiency
3. Their ability to mix with other materials at high concentration will allow for high dopant concentrations and perhaps stable single layer devices employing multiple dopants
4. The availability of noncrystallizable dopants, noncrystallizable charge transports, noncrystallizable hosts, and noncrystallizable emitters will simplify the design of stable and long-lived devices
5. Materials that can be coated from solvent as well as evaporated 6. Inhibition of eximer and/or exciplex formation