title: Wide energy-window view on the density of states and hole mobility in poly(p-phenylene vinylene).
abstract: Using 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 4 orders of magnitude when the electrochemical potential is scanned through the DOS.
authors.affiliation: Kamerlingh Onnes Laboratory, Leiden University, POB. 9504, 2300 RA Leiden, The Netherlands.
authors.forename: I N
authors.initials: IN
authors.lastname: Hulea
authors.forename: H B
authors.initials: HB
authors.lastname: Brom
authors.forename: A J
authors.initials: AJ
authors.lastname: Houtepen
authors.forename: D
authors.initials: D
authors.lastname: Vanmaekelbergh
authors.forename: J J
authors.initials: JJ
authors.lastname: Kelly
authors.forename: E A
authors.initials: EA
authors.lastname: Meulenkamp