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CB THE UNIVERSITY of LIVERPOOL E Carbon Based Electronics: A National Consortium GRANT REF: GR/R97092/01 Coordination: Prof Bill Eccleston, Prof Alison Mainwood, Prof Bill Milne 01/10/2002 – 31/11/2006 Consortium Objective Disciplines Engineering Chemistry Electronics Physics To co-ordinate UK research on carbon-based electronics and the material properties that are required to produce them, in order to enhance the international position that UK companies and research institutions already hold in this field by: University Collaboration Cambridge, Physics: TFT physics and data Cambridge, Chemistry i. ii. iii. developing novel, existing growth processing techniques and materials in order to design, produce and test improved devices. introducing novel combinations of carbonbased materials and processing techniques, in order to devise innovation electronic devices. Liverpool, Chemistry: TFT material (P3HT) Heriot-Watt, Bristol Chemistry: Deposition of Diamond Liverpool, Elec.Eng: Devices and circuit models KCL, Warwick Physics: EPR, diamond and C60 UCL, Elec. Eng., Physics: DTLS & theory, diamond Oxford, Chemistry: Diamond Substrates Imperial, Physics & Chemistry: Polymers and materials training of scientists, engineers and students in the wide-ranging technologies required to exploit the research in the form of commercial devices in the UK. Cambridge,Eng: Nanotube TFT & composites Sussex, Chemistry: nanotube synthesis Bangor: Polymer field effect devices/materials Surrey, Electronics: Multiple nanotubes Achievements This table (left) shows the Meyer Neldel energies found experimentally using different polymer devices. Examples of Thin Film transistors (Cambridge Eng) with nanotubes. Such structures have the capacity to exceed the carrier mobilities of silicon. An EELS study (Surrey) of MWNT coated with WS2 (Sussex) shows for the first time that 4 monolayers are the lower limit to bulk dielectric behaviour. Electron conduction in polymer TFT channels was thought unlikely. The values shown in this table (right) demonstrate that this is an extrinsic effect. CMOS is now possible. The project has produced an improved understanding of conduction processes in these materials and their impact on a wide range of devices and potential circuits. It has been able to look at new materials and their processing. Many of the collaborations continue and up to 50 people have benefited from laboratory based experience as well as the workshops. Publications to date: 128+