Journal
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
Volume 127, Issue 38, Pages 13281-13286Publisher
AMER CHEMICAL SOC
DOI: 10.1021/ja052816b
Keywords
-
Categories
Ask authors/readers for more resources
We present the synthesis and characterization of a fused-ring compound, dithieno[2,3-d-.2 ',3 '-d']dithiophene[3,2-b:4,5-b ']dithiophene (pentathienoacene, PTA). In contrast to pentacene, PTA has a larger band gap than most semiconductors used in organic field-effect transistors (OFETs) and therefore is expected to be stable in air. The large pi-conjugated and planar molecular structure of PTA would also form higher molecular orders that are conductive for carrier transport. X-ray diffraction and atomic force microscopy experiments on its films show that the molecules stack in layers with their long axis upright from the surface. X-ray photoelectron spectroscopy suggests that there are no chemical bonds at the PTA/Au interface. OFETs based on the PTA have been constructed, and their performances as p-type semiconductors are also presented. A high mobility of 0.045 cm(2)/V s and an on/off ratio of 10(3) for a PTA OFET have been achieved, demonstrating the potential of PTA for application in future organic electronics.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available