Organic Semiconductor and its applications Sara Saedinia University
- Slides: 15
Organic Semiconductor and its applications Sara Saedinia University of California, Irvine
Today we will talk about n Organic materials n Advantages n Disadvantages n Applications n Future of organic semiconductor
Organic Semiconductor (elect. ) vs. Inorganic n n Silicon based inorganic material Covalently bonded crystals Polymer based organic material n. Van der Waals bonded crystals n
Why Organic? Advantages n Organic electronics are lighter, more flexible n Low-Cost Electronics q No vacuum processing q No lithography (printing) q Low-cost substrates (plastic, paper, even cloth…) q Direct integration on package (lower insertion costs)
Why Organic? Comparison Example Organic Electronic Silicon Cost $5 / ft 2 $100 / ft 2 Fabrication Cost Low Capital $1 -$10 billion Device Size 10 ft x Roll to Roll < 1 m 2 Material Flexible Plastic Substrate Rigid Glass or Metal Required Conditions Ambient Processing Ultra Cleanroom Process Continuous Direct Printing Multi-step Photolithography
Why Organic? Advantages n They are also biodegradable (being made from carbon). n This opens the door to many exciting and advanced new applications that would be impossible using copper or silicon.
Why not Organic? Disadvantages n Conductive polymers have high resistance and therefore are not good conductors of electricity. n Because of poor electronic behavior (lower mobility), they have much smaller bandwidths. n Shorter lifetimes and are much more dependant on stable environment conditions than inorganic electronics would be.
Applications n Displays: q n RFID : q n (OLED) Organic Light Emitting Diodes Organic Nano-Radio Frequency Identification Devices Solar cells
Displays (OLED) n 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. n n n Brighter displays Thinner displays More flexible
RFID n Passive RF Devices that talk to the outside world … so there will be no need for scanners.
RFID benefits n Quicker Checkout n Improved Inventory Control n Reduced Waste n Efficient flow of goods from manufacturer to consumer
Solar Cells n The light falls on the polymer n Electron/hole is generated n The electron is captured C 60 n The electricity is passed by the nanotube
Future of Organic Semiconductor n n Smart Textiles Lab on a chip Portable compact screens Skin Cancer treatment
Thank You Questions?
References n http: //www. idtechex. com/printedelectronicsworld/articles/flexible_organic_13_56_mhz_rfid_tag_is_a_cost_breakthrough_000 00613. asp n http: //autoid. mit. edu/cs/ n http: //www. physorg. com/news 2339. html n http: //engineeringtv. com/blogs/etv/archive/2008/03/26/organic-solar-cells. aspx n http: //spie. org/x 19641. xml? Article. ID=x 19641 n http: //www. orgatronics. com/smart_fabrics. html n http: //www. laserfocusworld. com/display_article/283860/12/none/News/MEDICAL-PHOTONICS: -OLEDs-enhance-PDTfor-skin-cancer n http: //www. sematech. org/meetings/archives/other/20021028/14_Subramanian_Organic. pdf n www. eng. buffalo. edu/Courses/ee 240/studentprojects/spr 2006/group 5. ppt n http: //www. mpip-mainz. mpg. de/documents/aksp/Seminare/Old_Basisseminars/W 2007/Basisseminars/electronics. pdf
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