A multifunctional ionic iridium complex for field-effect and light-emitting devices

Abstract

We synthesized a new ionic iridium complex with interesting multifunctions of both insulativity and light emission. With this material as gate dielectric, we have fabricated a multifunctional device which behaves as a normal transistor at low gate voltage and a light emitting device when the voltage is over 4 V. The emission brightness can be tuned by V_GS and V_DS separately. This device can potentially be applied in overvoltage alarm systems.