Ultrathin Organic Transistors on Oxide Surfaces

Details Ultrathin Organic Transistors on Oxide Surfaces Ultrathin Organic Transistors on Oxide Surfaces

2004-08-26

arxiv.org/abs/cond-mat/0408562v2

New Journal of Physics 7 133 (2005)

Physics

Condensed Matter

Materials Science

16 pages with 4 figures, submitted to Advanced Materials

Scientific paper

10.1088/1367-2630/7/1/133

In recent years, thin-film organic field-effect transistors (OFETs) have begun to be considered as a possible alternative to the hydrogenated amorphous silicon thin-film transistors (a-Si:H TFT's) used in active matrix flat panel displays and other large-area electronics applications. Low-temperature processability, low-cost fabrication and compatibility with arbitrary substrates are some of the promising advantages of OFETs, among others. Of the many organic materials available, pentacene, in particular, is one of the leading candidates for use in current thin-film OFET architectures - this because of its excellent electrical characteristics and its resistance to atmospheric oxygen. In the recent literature, pentacene's transport properties, as well as transistor performance, have already been analyzed from the point of view of substrate treatments, pentacene evaporation rate and substrate temperature, electrode chemical nature and channel geometry. The results show that the morphology, crystal structure and molecular ordering of the first organic monolayer(s) at the pentacene/dielectric interface are essential determinants of carrier transport phenomena. To further investigate these interface effects, we have built a model organic field-effect transistor which consists essentially of a single layer of pentacene on an oxide substrate. Four-probe and two-probe transport measurements as a function of temperature and fields will be presented in relation with structural near-field observations. The experimental results suggest a simple two-dimensional model where the equilibrium between free and trapped carriers at the oxide interface determines the OFET characteristics and performance.

Affiliated with

Also associated with

No associations

Rating

Ultrathin Organic Transistors on Oxide Surfaces does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Ultrathin Organic Transistors on Oxide Surfaces, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Ultrathin Organic Transistors on Oxide Surfaces will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-476150