Polymer Electronicspolymer.sut.ac.ir/People\Courses\25\Polymer Applications... · PPT file · Web...
Transcript of Polymer Electronicspolymer.sut.ac.ir/People\Courses\25\Polymer Applications... · PPT file · Web...
Polymers Applications in Electronics
Part 2
Applications and Areas of Research Fabrication of organic thin film transistors Non-volatile memory devices based on organic transistors Development of novel conjugated polymers for
photovoltaic device applications Fabrication of organic photovoltaic cells Fabrication of organic light-emitting devices (OLED) Ferroelectric polymers for thin film devices Gene Sensors Printed Electronics Conducting Polymer Actuators and Micropumps Responsive Membranes/Hybrid Plastics
focused upon polymer membranes that incorporated electronically conducting polymers and piezoelectric polymers
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Scientists at Philips Research have developed a plastic RFID chip that is as thin as paper and no larger than a postage stamp
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http://www.research.philips.com/newscenter/pictures/ldm-polelec.html
Printed Electronic Methods Flexoprinting: a high pressure method that is
especially well applicable to print on plastic substrates
Offset printing: a flat printing technique that makes a high resolution possible
Gravure printing: a low pressure printing method that makes high volumes and the use of organic dissolvent possible
Rotary screen printing: a method that allows to print in thick layers
Coating methods: diverse methods to apply homogeneous and thin layers
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Process of Printed Electronics Clean room process - During preparation,contamination
might be introduced in the form of salts, polysiloxanes and dust particles spin coating, photo lithography, evaporation, wet etching
and others are used for the basic development of polymer electronics
Lab Printing Process – Lab type "desktop" printing machines for pad printing, doctor blading and gravure printing as well as screen printing and others are used to develop the basic printing processing know-how for printed electronics
Production Process - Production scale printing process such as flexography printing, offset printing, gravure printing, screen printing and others are used to produce printed electronic products for low cost high volume applications
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Printable Electronics
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Companies have already commercialized the polymer electronic technology PolyIC offers two product lines:
▪ PolyID® for printed RFID (radio frequency identification) tags for contactless identification of products
▪ PolyLogo® for printed Smart objects (combined systems of different polymer electronics components)
Printed electronics makes low-cost RFID tags possible that can be used for mass applications. Furthermore, this new technology is also used in displays and complex systems, called smart objects.
Advantages vs. Disadvantages Polymer Electronics
Advantages Manufacture w/ relative
simple and inexpensive equipment at low cost
Light weighted and flexible, very durable under stress and flex
Can be easily applied over a large surface area
Freedom of choice of their chemical composition
Adaptable in various ways because of printing methods that can be adjusted to current requirements quickly (printed electronics)
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Disadvantages Due to their intrinsic
physical properties (i.e. limited mobility of charge carriers), the performance of polymer electronic products lacks the speed of its silicon counterpart
Research is still on going to increase performance for more complex functionality
To be able to improve performance one should be able to distinguish between problems introduced during preparation, intrinsic material properties, and device characteristics
Conclusion Research in polymer electronics began in 1970s
Conductive polymer doped with iodine Polymer electronics have the same building
blocks as conventional electronics – transistors (OFETs), diodes, capacitors, inverters, and polymer ring oscillators
Applications include organic photovoltaic cells, organic light emitting devices (OLED), polymer transistors, printed electronics and many more
Polymer electronics are light, flexible, and less expensive to produce on a mass quantity scale than conventional electronics
Polymer electronics are not a competing product but are considered to be more complementary to its silicon counterpart
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Works Cited “Polymer Electronics.” http://www.polyid.de/en/polymer-electronics.php Organic/Polymer Electronics
http://www.research.philips.com/newscenter/pictures/ldm-polelec.html “Research Areas.” Nanyang Technical University
http://www.mse.ntu.edu.sg/Research/?op=organicpe.html “Organic Electronics.” http://en.wikipedia.org/wiki/Organic_electronics “Polymer Electronics Research Centre.” University of Auckland.
http://www.perc.auckland.ac.nz/uoa/science/about/departments/chemistry/about/research/perc/research/actuators.cfm
Bock, Karlheinz. “Polymer Electronics Systems – Polytronics.” IEEE Xplore. Vol. 93, No. 8 August 2005.
Knobloch, Alexander and et al. “Printed Polymer Transistors.” IEEE Xplore website. IEEE Session 4: Polymer Electronic Devices. 2001.
“PolyIC Newsletter.” IC4U – Issue 01.2009. March 31,2009. Bettina Bergbauer, Public Relations.
T. Sekitani, Y. Noguchi, U. Zschieschang, H. Klauk, T. Someya.“Organic transistors manufactured using inkjet technology with sub femtoliter accuracy.” Proceedings of the National Academy of Sciences, vol. 105, no. 13, pp. 4976-4980, April 2008.
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