Seminars May 31, 2010
Four seminars on devices, functional materials, printing technologies, barrier materials give introductions to the respective topics. This is the perfect opportunity for newcomers to get an overview of the field and for established experts to get an update on adjacent sectors.
09:30-11:00 | Devices in Organic / Printed Electronics
Dr. Andreas Ullmann, PolyIC GmbH & Co. KG, Germany
Chief Technology Analyst
11:30-13:00 | Printing Technologies
Dr. Stefan Dilfer, TU Darmstadt, Germany
14:00-15:30 | Materials for Organic / Printed Electronics and Photonics
Prof. Iain McCullogh, Imperial College London, United Kingdom
Professor of Polymer Materials
16:00-17:30 | Organic Photovoltaics
Dr. Jan Kroon, ECN - Energy Research Centre of the Netherlands, Netherlands
09:30-11:00 | Devices in Organic / Printed Electronics
Dr. Andreas Ullmann, PolyIC GmbH & Co. KG, Germany
Chief Technology Analyst
This seminar will provide an overview, on a wide range of organic/printed devices by showing fundamental information on device & component setup, required layers, possible printing methods and characterization. The tutorial covers the basics of organic/printed electronic components including: Conducting tracks, organic rectifier diodes, organic thin-film transistors (OTFT), organic circuits, power sources (batteries, RF-sources), organic photovoltaic devices (OPV), organic light-emitting devices (OLED), printed memories and sensors.
More detailed information will be given on printed transparent conducting films, printed memories, organic thin-film transistors and circuits, the different cross-sections and basic know how on electrical characterization.
General discussed Devices:
- Conducting tracks for printed electronics
- Sensors (e.g. touch sensors)
- Capacitors & organic rectifier diodes
- Power sources (RF-sources, batteries)
- Organic thin-film transistors (p-type & n-type) and circuits
- Printed memories
- (Organic photovoltaic devices (OPV))
- Organic light-emitting devices (OLED)
Advanced knowledge:
- Sensors (e.g. touch sensors)
- Device setup (OTFT & circuits)
- Electrical OTFT characterization
11:30-13:00 | Printing Technologie
Dr. Stefan Dilfer, TU Darmstadt, Germany
The seminar will discuss suitable conventional and digital printing techniques for the realization of electronic devices. It will compare the assets and drawbacks of the available printing processes with respect to imaging possibilities and ink requirements. The following printing processes will be introduced:
- Flexo printing
- Gravure printing
- Pad printing
- Screen printing
- Offset printing
- Inkjet printing
Furthermore, the general demands and challenges for printing of electronic components and applications will be addressed.
14:00-15:30 | Materials for Organic / Printed Electronics and Photonics
Prof. Iain McCullogh, Imperial College London, Unitd Kingdom
Professor of Polymer Materials
General topics:
- Materials for OPV, TFT and OLEDs
- Semiconductors, conductors , dielectrics, electrodes
- Synthesis, molecular structure, film formation and charge transport properties
- Stability and performance
- CNT and inorganic materials
The tutorial will cover firstly the design and synthesis of organic semiconductors for both transistor and solar cells, followed by characterisation and processing of organic transistors, as well as a short summary of organic electronic applications. The tutorial will build knowledge from the ground up, starting from the molecular structure of the most relevant materials up to the most exciting technological applications of organic semiconductors. The fundamentals of organic semiconductor molecular structure will be described, and the subsequent impact on electronic energy levels and microstructure discussed. Semiconductor stability will be examined, and illustrated with some state-of-the-art literature examples. The inter-relationships between organic semiconductor molecular conformation, thin film morphology and charge transport in field-effect transistors will be discussed. Particular emphasis will be on polymeric semiconductors, and the impact of backbone structure and pi-electron delocalisation and density on the frontier molecular orbital energy levels will be highlighted with respect to solar cell performance. Other transistor device materials, such as electrodes and dielectrics will be reviewed. Thiophene containing polymers will provide examples to illustrate molecular design principles. The basic working principles of field-effect transistors will be explained using relevant examples of device architecture from the recent literature. Special requirement for materials for OLEDs will be discussed.
Information on recent development in other material classes such as CNT (carbon nanotubes) and inorganic (solution processable) conductors and semiconductors will be provided in addition. .
16:00-17:30 | Organic Photovoltaics
Dr. Jan Kroon, ECN - Energy Research Centre of the Netherlands, Netherlands
This seminar will provide newcomers as well as experts from other Organic and Printed Electronics areas a systematic overview of the current status of the OPV research field and future challenges.
Photovoltaic cells, using organic materials in the active part of the device have been the object of research for many years. OPV is considered as one of the important Emerging PV technologies which carry large hope for substantial cost reductions for PV in the future. The potential for cost reduction is based on the compatibility with high manufacturing throughput through a roll-to-roll production technology (with access to flexible properties). All these factors could finally lead to direct photovoltaic module cost less than 0.5 EUR per Wp. Additionally, it opens up the perspective of new applications in which mechanical flexibility and light weight are important add-ons to the functionality of PV systems.
The seminar will cover a general introduction on Photovoltaics and the position of OPV in the total field of PV developments. After a brief discussion of the general operation principles of OPV and a presentation of record efficiencies, stability data and key technology drivers, current trends will be reviewed including materials development, device engineering and light management strategies, printing and coating of large area modules, standardization of performance testing etc.
Topics to be discussed:
- General introduction on photovoltaics and development roadmaps
- Basic working principles of OPV
- Materials engineering and design rules
- Device (cell and module) engineering
- Light management strategies
- Standardization of testing
- Large area manufacturing of OPV
