Project Presentations

1. Project Presentations Project idea: Novel nanoparticulate materials for printed electronics, optoelectronics and sensors Speaker: Harri Kopola VTT - Technical Research Centre of Finland

2. 2 Agenda / content Introduction Description of the Project idea WP1. Fluid processable materials WP2. Process development WP3. Devices WP4. Characterisation Proposal partners

3. 3 Introduction Organic fluid processable materials ( conductive polymers, semiconductors, dielectrics…) have challenges Performance Stability Sensitivity for moisture & oxygen No high-performance barriers available Nanoparticulate inorganic materials offer interesting performance characteristics Integrated passive, tunable devices, novel sensing elements

4. 4 Description of the Project idea Novel nanoparticulate materials for printed electronics, optoelectronics and sensors New fluid processable nanoparticulate inorganic/hybrid materials ( conductive, semiconductor, dielectric) for electronic, optoelectronic and sensing functionalities Advanced device structures for printed OLED's, solar cells, transistors, sensors,…

5. 5 WP1. Fluid processable materials Conductive transparent ITO replacement ink Inks with metallic nanoparticles (e.g. ATO) or NCTs (mixed or aligned) Tunable conductivity and transparency with ceramic nanoparticles Stable semiconductive inorganic inks n and p –type Dielectric materials, high and low k Linear dielectric nanoparticle inks adjusted by silicon nanoparticles Sensor inks with electromechanical functionalities CNT (single and multiwall) inks with nanoparticles to tune sensibility Porous silicon, polycrystalline silicon or silicon oxide Fluid processable barrier ink

6. 6 WP2. Process development Large area wet deposition process development for nanoinks Gravure, flexography printing Inkjet printing Detailed research topics Nanoink rheology Compatibility issues Curing/drying properties, open air processing Enhanced material properties by R2R post processes

7. 7 WP3. Devices Thin film transistors device performance improvement with novel nanoinks Stability improvement Interface physics and chemistry device modeling OLED/OSC ITO anode replacement Hole/electron transporting materials Lifetime and stability improvement Quantum dots Sensors Electromechanical, e.g. pressure/force TFT sensors, e. g. gas

8. 8 WP4. Characterisation Material level Understanding material properties and performance Management of materials by modeling of microstructures Computer aided design/printing Device level Understanding device properties and performance Integration issues (areal limitations, vertical connections, substrates, etc.) Selectivity, long term reliability Interfacial issues (fabrication order, barrier layers, etc.) Energy management issues Price against performance

9. 9 Proposal partners VTT Technical Research Centre of Finland University of Oulu, Finland Kurchatov Institute, Russia Moscow State University, Russia NN research institute (EU) NN Russian research partner? Industrial partner EU & Russia

10. Thank you Contact information: Harri Kopola Research professor Director Center for Printed Intelligence VTT Kaitovayla 1, 90570 Oulu, Finland Email: Harri.Kopola@vtt.fi Tel.: +358-40-5574867