Organic Semiconductor and its applications Sara Saedinia University of California, Irvine.

Organic Semiconductor

and its applicationsSara 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

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

Cost

Fabrication Cost

Device Size

Material

Required Conditions

Process

Organic Electronic

$5 / ft2

Low Capital

10 ft x Roll to Roll

Flexible Plastic Substrate

Ambient Processing

Continuous Direct Printing

Silicon

$100 / ft2

$1-$10 billion

< 1m2

Rigid Glass or Metal

Ultra Cleanroom

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: (OLED) Organic Light Emitting Diodes

RFID : Organic Nano-Radio Frequency Identification

Devices Solar cells

Displays: (OLED) Organic Light Emitting Diodes

RFID : Organic Nano-Radio Frequency Identification

Devices Solar cells

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.

Brighter displays Thinner displays More flexible

Displays (OLED)

RFID

Passive RF Devices that talk to the outside world … so there will be no need for scanners.

RFIDbenefits

Quicker Checkout

Improved Inventory Control

Reduced Waste

Efficient flow of goods from manufacturer to consumer

Solar Cells

The light falls on the polymer

Electron/hole is generated

The electron is captured C60

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_00000613.asp

http://autoid.mit.edu/cs/

http://www.physorg.com/news2339.html

http://engineeringtv.com/blogs/etv/archive/2008/03/26/organic-solar-cells.aspx

http://engineeringtv.com/blogs/etv/archive/2008/03/26/organic-solar-cells.aspx

http://spie.org/x19641.xml?ArticleID=x19641

http://www.orgatronics.com/smart_fabrics.html

http://www.laserfocusworld.com/display_article/283860/12/none/none/News/MEDICAL-PHOTONICS:-OLEDs-enhance-PDT-for-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