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Plenary  Lecture

Table of Content

• Organic Semiconductor

• Principle of Charge Transport on organic Molecules

• Transistors

• Principle OTFT – Structures

• Top/Bottom Gate, Top/Bottom Contacts --- Coplanar/Staggered

• Double Gate

• OLED

• OPV

• Processing

• Printing Technologies

• Low Volume Printing Technologies for flexible and high Resolution

• InkJet

• Tampon- Printing

• R2R - Mass Printing Technologies for High – Volume, Low – Cost

• Offset-, Flexo-,Gravour-  Screen- Printing

• OTFT – Modeling

• Macro - Models

• Curve – Fitting for good agreement. Parameters without physical Basis

• Physical Modeling - Charge Transfer Mechanisms

• Hopping

• Multiple Trapping and Release

• Field dependent Mobility

• Small Polaron

• Advantages of organic electronics

• Low processing Temperature

• Low equipment cost ( for IJ-Printing no Masks needed)

• Fast production (within hours)

• Flexible Materials and Substrates possible (even paper)

• Disposable

• Circuit Design

• Problems due to organic Semiconductor

• Low Mobility – no fast switching applications possible and limited integration

• Low Life Time due to organic semiconductor (compared to Silicon)

• Encapsulation against Air and Light needed

• High Voltages needed

• No real Complementary Technology available

• Problems caused by Process (printing technologies)

• Low Resolution (>50um) → low operation speed

• Low accuracy → high parameter variations → Robust designs needed

• Limited Doping possibilities

• Applications

• Replacing classical technologies

• OLED, RFID, OPV

• Enhanced functionality – New

• Flexible Displays

• Large Area Sensors

• Wearable electronic

• Sheet scanner

• Smart Package

• RFID

• New Advertising possibilities

• Integrated Display / Games

• Copyright Protection --- anti-counterfeiting measures

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