Stable Light‐Emitting Electrochemical Cells Using Hyperbranched Polymer Electrolyte

The choice of an adequate electrolyte is a fundamental aspect in polymer light-emitting electrochemical cells (PLECs) as it provides the situ doping and influences performance these devices. In this study, hyperbranched (Hybrane DEO750 8500) blended with Li salt used novel state-of-the-art Super Yellow (a polyphenylenevinylene) based LECs. Due to desirable properties homogeneous smooth films that forms emitting polymer, PLEC excellent electroluminescent are obtained using pulsed current bias scheme. devices very stable, lifetimes excess 2000 h initial luminance values above 450 cd m−2, peak efficiency 12.6 lm W−1, sub-minute turn-on times. stability also studied by measuring photoluminescence (PL) semiconductor during operation. findings suggest possible observe quenching PL vertically stacked due advancement doped fronts film immediate recovery when removed.