Transcript Organic Semiconductor and its applications

Organic Semiconductor
and its applications
Sara Saedinia
University of California, Irvine
Today we will talk about

Organic materials

Advantages

Disadvantages

Applications

Future of organic semiconductor
Organic Semiconductor (elect.) vs. Inorganic


Silicon based inorganic
material
Covalently bonded
crystals
Polymer based organic
material
Van der Waals bonded
crystals

Why Organic?
Advantages

Organic electronics are lighter, more flexible
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Low-Cost Electronics
 No vacuum processing
 No lithography (printing)
 Low-cost substrates (plastic, paper, even cloth…)
 Direct integration on package (lower insertion
costs)
Why Organic?
Comparison Example
Organic Electronic
Silicon
Cost
$5 / ft2
$100 / ft2
Fabrication Cost
Low Capital
$1-$10 billion
Device Size
10 ft x Roll to Roll
< 1m2
Material
Flexible Plastic Substrate
Rigid Glass or Metal
Required Conditions
Ambient Processing
Ultra Cleanroom
Process
Continuous Direct Printing
Multi-step Photolithography
Why Organic?
Advantages

They are also biodegradable (being made from
carbon).

This opens the door to many exciting and advanced
new applications that would be impossible using
copper or silicon.
Why not Organic?
Disadvantages

Conductive polymers have high resistance and
therefore are not good conductors of electricity.

Because of poor electronic behavior (lower mobility),
they have much smaller bandwidths.

Shorter lifetimes and are much more dependant on
stable environment conditions than inorganic
electronics would be.
Applications

Displays:

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RFID :

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(OLED) Organic Light Emitting Diodes
Organic Nano-Radio Frequency Identification
Devices
Solar cells
Displays (OLED)
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One of the biggest applications of organic
transistors right now.
Organic TFTs may be used to drive LCDs and potentially
even OLEDs, allowing integration of entire displays on
plastic.


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Brighter displays
Thinner displays
More flexible
RFID
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Passive RF Devices that talk to the outside
world … so there will be no need for scanners.
RFID
benefits

Quicker Checkout

Improved Inventory Control

Reduced Waste

Efficient flow of goods from
manufacturer to consumer
Solar Cells

The light falls on the polymer
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Electron/hole is generated
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The electron is captured C60
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The electricity is passed by the
nanotube
Future of Organic Semiconductor




Smart Textiles
Lab on a chip
Portable compact screens
Skin Cancer treatment
Thank You
Questions?
References

http://www.idtechex.com/printedelectronicsworld/articles/flexible_organic_13_56_mhz_rfid_tag_is_a_cost_breakthrough_000
00613.asp
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http://autoid.mit.edu/cs/

http://www.physorg.com/news2339.html
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http://engineeringtv.com/blogs/etv/archive/2008/03/26/organic-solar-cells.aspx
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http://engineeringtv.com/blogs/etv/archive/2008/03/26/organic-solar-cells.aspx

http://spie.org/x19641.xml?ArticleID=x19641
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http://www.orgatronics.com/smart_fabrics.html
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http://www.laserfocusworld.com/display_article/283860/12/none/none/News/MEDICAL-PHOTONICS:-OLEDs-enhance-PDTfor-skin-cancer

http://www.sematech.org/meetings/archives/other/20021028/14_Subramanian_Organic.pdf

www.eng.buffalo.edu/Courses/ee240/studentprojects/spr2006/group5.ppt

http://www.mpip-mainz.mpg.de/documents/aksp/Seminare/Old_Basisseminars/W2007/Basisseminars/electronics.pdf