Admittance spectroscopy on polymer light-emitting diodes

From admittance spectroscopy measurements on poly(p-phenylene vinylene) based light-emitting diodes various relaxation processes can be observed. At low bias inductive contributions due to the transit of charge carriers dominate, at high bias capacitive contributions as a result of charge redistribution appears. These processes reveal a transition from space-charge limited to recombination limited behavior, as is also indicated by the current-voltage characteristics.</p

Hydrogen-mediated magnetic domain formation and domain wall motion in Co30Pd70 alloy films

10.1038/s41598-018-25114-3Scientific Reports81665