Publications (6)
Hole mobility in organic single crystals measured by a "flip-crystal" field-effect technique
C. Goldmann, S. Haas, C. Krellner +3
We report on single crystal high mobility organic field-effect transistors (OFETs) prepared on prefabricated substrates using a "flip-crystal" approach. This method minimizes cryst…
Effects of polarized organosilane self-assembled monolayers on organic single-crystal field-effect transistors
J. Takeya, T. Nishikawa, T. Takenobu +7
The surface conductivity is measured by a four-probe technique for pentacene and rubrene single-crystals laminated on polarized and nearly unpolarized molecular monolayers with app…
Density of bulk trap states in organic semiconductor crystals: discrete levels induced by oxygen in rubrene
C. Krellner, S. Haas, C. Goldmann +3
The density of trap states in the bandgap of semiconducting organic single crystals has been measured quantitatively and with high energy resolution by means of the experimental me…
Threshold Voltage Shift in Organic Field Effect Transistors by Dipole-Monolayers on the Gate Insulator
K. P. Pernstich, A. N. Rashid, S. Haas +5
We demonstrate controllable shift of the threshold voltage and the turn-on voltage in pentacene thin film transistors and rubrene single crystal field effect transistors (FET) by t…
Evidence of Water-related Discrete Trap State Formation in Pentacene Single Crystal Field-Effect Transistors
C. Goldmann, D. J. Gundlach, B. Batlogg
We report on the generation of a discrete trap state during negative gate bias stress in pentacene single crystal "flip-crystal" field-effect transistors with a SiO2 gate dielectri…
Field-induced charge transport at the surface of pentacene single crystals: a method to study charge dynamics of 2D electron systems in organic crystals
J. Takeya, C. Goldmann, S. Haas +3
A method has been developed to inject mobile charges at the surface of organic molecular crystals, and the DC transport of field-induced holes has been measured at the surface of p…