Organic semiconductor problem solved
 

Scientists at Berkeley National Laboratory claim to have solved a problem associated with organic semiconductors. Organic semiconductors include light emitting diodes (LEDs), field effect transistors (FETs) and photovoltaic cells used in solar panels. Researchers know that performance problems occur within organic semiconductor thin films but were unsure of the cause.
http://channeleye.co.uk/organic-semi...roblem-solved/