Charge and exciton dynamics of OLEDs under high voltage nanosecond pulse: towards injection lasing.

ABSTRACT: Electrical pumping of organic semiconductor devices involves charge injection, transport, device on/off dynamics, exciton formation and annihilation processes. A comprehensive model analysing those entwined processes together is most helpful in determining the dominating loss pathways. In this paper, we report experimental and theoretical results of Super Yellow (Poly(p-phenylene vinylene) co-polymer) organic light emitting diodes operating at high current density under high voltage nanosecond pulses. We demonstrate complete exciton and charge carrier dynamics of devices, starting from charge injection to light emission, in a time scale spanning from the sub-ns to microsecond region, and compare results with optical pumping. The experimental data is accurately replicated by simulation, whi

SUBMITTER: Ahmad V 

PROVIDER: S-EPMC7453197 | biostudies-literature | 2020 Aug

REPOSITORIES: biostudies-literature