Biodegradable Polycaprolactone as Ion Solvating Polymer for Solution-Processed Light-Emitting Electrochemical Cells.

ABSTRACT: In this work, we demonstrate the use of the biodegradable polymer polycaprolactone (PCL) as the ion solvating polymer in solution-processed light-emitting electrochemical cells (LEC). We show that the inclusion of PCL in the active layer yields higher ionic conductivities and thus contributes to a rapid formation of the dynamic p-i-n junction and reduction of operating voltages. PCL shows no phase separation with the emitter polymer and reduces film roughness. The devices show light-emission at voltages as low as 3.2 V and lifetimes on the order of 30 h operating above 150 cd m^-2 with turn-on times <20 s and current and luminous efficacies of 3.2 Cd A^-1 and 1.5 lm W^-1 respectively.

SUBMITTER: Jurgensen N 

PROVIDER: S-EPMC5095640 | biostudies-literature | 2016 Nov

REPOSITORIES: biostudies-literature