Poster: http://www.physics.uwo.ca/colloquia/Colloquia%20Notices/2012_2013/CHANG%20Colloquium.pdf
Western University
DEPARTMENT OF PHYSICS AND ASTRONOMY
PHYSICS & ASTRONOMY COLLOQUIUM
Date: Thursday, 18th April 2013
Time: 1:30 p.m.
Location: Physics & Astronomy Seminar Room 100
Dr. Gap Soo Chang
Department of Physics & Engineering Physics
University of Saskatchewan
“Carbon-based electronics: Achievements and Challenges”
ABSTRACT
The π-conjugated molecular semiconductors have recently emerged as important and promising materials for a wide field of advanced electronic applications due to their solution processability at low temperature, device fabrication on flexible substrates, and comparatively high speed of fabrication in a cost-efficient way. Organic field-effect transistors (OFETs), photovoltaic cells (OSCs), and light-emitting diodes (OLEDs) are good examples where organic semiconductors are being used, and some of them are tantalizingly close to being used in commercial applications. Moreover, organic semiconductors typically exhibit long spin-relaxation time and spin-coherence length when spin-polarized charge carriers are injected. These advantages enable us to utilize both spin and charge properties of electrons for information storage and processing, which are called Spintronics. However, development of practical electronic and spintronic devices based on organic semiconductors has hampered by several problems such as difficulty in obtaining high crystalline thin films, low carrier mobility, low light-energy conversion efficiency, and large conductivity mismatch between organic channel layer and metal electrodes. In this presentation, a variety of recent approaches to high performance organic electronics will be reviewed and technically challenging issues will be discussed.
Refreshments will be available.
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