Patterning Organic Semiconductor Single Crystal Field-Effect Transistors @ Stanford/ IBM ARC/ UC Davis/ UC Berkeley

Author(s): S. Liu1, A. Briseno,² S.C.B. Mannsfeld,¹ J. Locklin,¹ W. You, H. Lee, Y. Xia,² Z. Bao,¹ A. Sharei, S. Liu,¹ M.E. Roberts¹ <br /> ¹Stanford University and ²University of Washington

Single-crystal organic field-effect transistors (OFETs) are ideal device structures for studying fundamental science associated with charge transport in organic materials and have demonstrated outstanding electrical characteristics. However, it remains a technical challenge to integrate single-crystal devices into practical electronic applications. A key difficulty is that organic single-crystal devices are usually fabricated one device at a time through manual selection and placing individual crystals. To overcome this difficulty, Bao et al. successfully developed two high-throughput approaches to pattern organic single crystal arrays. In the first method, organic crystals are patterned on electrode regions through solution (de)wetting on heterogeneously wettability-patterned substrates. This solution processing technique potentially has very low-cost. In the second approach, organic semiconductors are vapor-deposited on substrates using carbon nanotubes as templates. In both techniques, large arrays of single crystals OFETs with superior performance are successfully fabricated. Download as ppt

Related publication(s):

1. S.C.B. Mannsfeld, A. Sharei, S. Liu, M.E. Roberts, Z. Bao, â€Å“Highly efficient patterning of organic single crystal transistors from solution phase.‒ Adv. Mater. in press.
2. S. Liu, A. Briseno, S.C.B. Mannsfeld, J. Locklin, W. You, H. Lee, Y. Xia,1 Z. Bao, â€Å“Selective crystallization of organic semiconductors on patterned templates of carbon nanotubes‒, Adv. Func. Mater. 17, 2891-2896, 2007.