High-Performance Organic Single-Crystal Transistors on Flexible Substrates


  • A. L. B. acknowledges the Bell Labs Graduate Research Fellowship. A. L. B., F. W., R. J. T., and Y. Y. acknowledge financial support from the Air Force Office of Scientific Research (AFOSR, grant number F49620-03-10101). Z. B. acknowledges partial support from the Stanford Center for Polymeric Interfaces and macromolecular Assemblies (NSF-Center MRSEC under Award DMR-0213618) and the Stanford School of Engineering. We acknowledge valuable discussions with Mr. Colin Reese, Sheng-Han Li, and Drs. Chih-Wei Chu and Qian Miao. A. L. B. and R. J. T. contributed equally to this work. Supporting Information is available online from Wiley InterScience or from the author.


original image

Flexible and conformable organic single crystals as thin as 150 nm are used for fabricating mechanically bendable organic single-crystal field-effect transistors on low-cost plastic substrates (see figure and cover). We report effective field-effect mobility as high as 4.6 cm2 V–1 s–1 for a flexible rubrene single-crystal transistor, on/off ratio of ca. 106, threshold voltage of – 2.1 V, and a normalized subthreshold swing of 0.9 V nF decade–1 cm–2.