SILOXANE-POLYMER DIELECTRIC COMPOSITIONS AND RELATED ORGANIC FIELD-EFFECT TRANSISTORS

Crosslinkable Polymer Dielectrics NU 2004-112 Inventors He Yan Myung-Han Yoon Antonio Facchetti Tobin J. Marks* Short Description Novel dielectric polymers that can easily be incorporated into organic thin film transistors to enable high capacitance and low operating voltage #materials #semiconductors #thin film #transistor #manufacturing Abstract Electronic devices based on organic thin-film transistors (OTFTs) provide several advantages over traditional inorganic-based transistors. OTFT devices are lightweight, flexible and can be easily fabricated into large-area displays. However, the continued development of OTFTs hinges on high-performance gate dielectric materials. Such a material should be insulating, flexible, easily deposited from solution and be compatible with various organic and inorganic semiconductors. The Marks group from Northwestern University has developed a polymer dielectric material that accomplishes these goals. Their innovative gate dielectric material is composed of readily available polymers combined with organosilane crosslinking agents. The addition of a crosslinking agent makes this type of dielectric material impervious to cracking and delamination when the substrate is bent or treated with a solvent. Furthermore, these favorable mechanical properties also allow for the OTFT to be processed after the dielectric is deposited via solution-phase fabrication techniques. Applications o Organic field-effect and thin film transistors Advantages o High capacitance and low leakage o Easy to deposit from solution o Strong adherence to a variety of substrates o Low operating voltage Publications Yoon M-H, Yan H, Facchetti A, Marks TJ. Low-Voltage Organic Field-Effect Transistors and Inverters Enabled by Ultrathin Cross-Linked Polymers as Gate Dielectrics (2005). J. Am. Chem. Soc. 127: 10388-10395. IP Status Issued US patents 8,093,588 and 7,605,394. International patent application has been filed. Marketing Contact Allan Nader, PhD Invention Manager (e) a-nader@northwestern.edu (p) 847.491.4456