551 citations · 761 across the 7 of their papers we have counts for
5 papers · 1 filter
Bias-dependent Contact Resistance in Rubrene Single-Crystal Field-Effect Transistors
A. Molinari, I. Gutierrez, I. N. Hulea +2
We report a systematic study of the bias-dependent contact resistance in rubrene single-crystal field-effect transistors with Ni, Co, Cu, Au, and Pt electrodes. We show that the re…
Tunable Frohlich Polarons in Organic Single-Crystal Transistors
I. N. Hulea, S. Fratini, H. Xie +5
In organic field effect transistors (FETs), charges move near the surface of an organic semiconductor, at the interface with a dielectric. In the past, the nature of the microscopi…
Doping, density of states and conductivity in polypyrrole and poly(p-phenylene vinylene)
I. N. Hulea, H. B. Brom, A. K. Mukherjee +1
The evolution of the density of states (DOS) and conductivity as function of well controlled doping levels in OC_1C_10-poly(p-phenylene vinylene) [OC_1C_10-PPV] doped by FeCl_3 and…
In situ determination of the energy dependence of the high-frequency mobility in polymers
I. N. Hulea, A. V. Pronin, H. B. Brom
The high-frequency mobility in disordered systems is governed by transport properties on mesoscopic length scales, which makes it a sensitive probe for the amount of local order. H…
Effect of dye doping on the charge carrier balance in PPV light emitting diodes as measured by admittance spectroscopy
I. N. Hulea, R. F. J. van der Scheer, H. B. Brom +3
Dye doping is a promising way to increase the spectral purity of polymer light-emitting diodes (LEDs). Here we analyze the frequency and field dependence of the complex admittance…