Conference Program - LOPE-C 2011

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SCIENTIFIC CONF. | WEDNESDAY-JUNE 29, <strong>2011</strong> Track 5 Organic and Carbon-based Materials (04:30 pm - 06:00 pm) | LOCATION HARMONIE E / LEVEL C2 05:40 pm Polythiophene: polyethylene blend semiconducting thin-films and transistors by wire-bar coating Dr Craig Murphy, National Physical Laboratory, United Kingdom Organic semiconductors provide the potential for low cost integrated electronic circuits on flexible plastic substrates. In order to enhance the capability for formability and flexibility of plastic transistors, blended material systems incorporating mechanically tough polymers, such as polyethylene, have recently been created. These mixed materials possess a higher degree of complexity than single polymer semiconductors and require proper investigation of their physical and chemical structure, plus electrical properties. Here, we develop the first examples of wire-bar coated thin-films and transistor devices incorporating polythiophene : polyethylene blend organic semiconductor systems, examining the physical nanostructure, surface chemical composition and electrical characteristics, as a function of polythiophene : polyethylene component ratio. Wire-bar coating is a simple deposition method for preparing large areas of thin organic films at low cost and processes developed on such equipment are amenable to scale-up via techniques such as slot die coating, including in roll-to-roll fabrication systems. The morphology of the semiconductor layers produced has been examined by atomic force microscopy, transmission electron microscopy and X-ray photoelectron spectroscopy methods to reveal a strong structural dependence on initial composition, with clear evidence of phase separation, including vertical segregation. The 50 : 50 blend (by weight) exhibits a particular striking morphology, whereby micellar regions of semi-crystalline polythiophene (100s nm diameter) are enclosed by a matrix of lamellar polyethylene material (25-50nm lamella width). In terms of thin-film uniformity all the samples examined were homogeneous over large areas and the morphologies were reproducible between substrates processed in different coating runs. Bottom gate-bottom contact transistor devices were fabricated using such blends as the semiconductor layer and the field-effect charge carrier mobility was characterized as a function of blend composition. The combination of polymer blend semiconductors and large area deposition methods, such as wire-bar coating, provides a route to low cost, high performance, flexible plastic electronic circuits and systems. page 76
PLENARY SESSION | THURSDAY-JUNE 30, <strong>2011</strong> Plenary Session (09:00 am - 10:30 am) | LOCATION HARMONIE A + B / LEVEL C2 09:00 am Flexible Electronics as a Key for a New Experience of Value in Automotive Design Mr Robert Isele, BMW Group, Manager Perceived Value, FEP Integration , Germany - Current Interior Design - Visions for new Information - Status of Technologie - Vision Connected Drive as a first Trendsetter 09:30 am Printable and Flexible Electronics for the Future Applications Dr Bon Won Koo, Samsung Electronics Advanced Institute of Technology, General Manager on Printable Electronics , South Korea - Introduction - Organic Electronics - Flexible Electronics Technology - p-TFT Research in SAIT - Summary 10:00 am Printable and Flexible Electronics and Capacitive Multi Touch Mr Thomas Andrae, 3M New Ventures, Director, Germany - Bridging the gap between off-line and on-line media - Opportunities in brand protection and marketing - Challenging NFC 10:30 am COFFEE BREAK page 77
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BUSINESS CONFERENCE | TUESDAY-JUNE
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PLENARY SESSIONS | WEDNESDAY-JUNE 2
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TECHNICAL CONFERENCE | WEDNESDAY-JU
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TECHNICAL CONFERENCE | WEDNESDAY-JU
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SCIENTIFIC CONFERENCE | WEDNESDAY-J
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INTERACTIVE SESSION | WEDNESDAY-JUN
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INTERACTIVE SESSION | WEDNESDAY-JUN
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PLENARY SESSIONS | THURSDAY-JUNE 30
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TECHNICAL CONFERENCE | THURSDAY-JUN
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SCIENTIFIC CONFERENCE | THURSDAY-JU
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Page 26 and 27: SHORT COURSES | TUESDAY-JUNE 28, 20
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Page 30 and 31: BUSINESS CONF. | TUESDAY-JUNE 28, 2
Page 36 and 37: PLENARY SESSION | WEDNESDAY-JUNE 29
Page 38 and 39: BC-INVESTOR FORUM | WEDNESDAY-JUNE
Page 48 and 49: TECHNICAL CONF. | WEDNESDAY-JUNE 29
Page 54 and 55: SCIENTIFIC CONF. | WEDNESDAY-JUNE 2
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Page 88 and 89: SCIENTIFIC CONF. | THURSDAY-JUNE 30
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Conference Program - LOPE-C 2011

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