2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/24819Using an electrochemically gated transistor, we achieved controlled and reversible doping of poly(p-phenylene vinylene) in a large concentration range. Our data open a wide energy-window view on the density of states (DOS) and show, for the first time, that the core of the DOS function is Gaussian, while the low-energy tail has a more complex structure. The hole mobility increases by more than four orders of magnitude when the electrochemical potential is scanned through the DOS.4 pages, 4 figuresMaterials ScienceSoft Condensed Mattertext