Berkeley Lab Researchers Uncover Hidden Structures in Domain
Interfaces That Hamper Performance
Organic semiconductors are prized for light emitting diodes
(LEDs), field effect transistors (FETs) and photovoltaic cells. As they can be
printed from solution, they provide a highly scalable, cost-effective
alternative to silicon-based devices. Uneven performances, however, have been a
persistent problem. Scientists have known that the performance issues originate
in the domain interfaces within organic semiconductor thin films, but have not
known the cause. This mystery now appears to have been solved.