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You are here: Home Events Dr. Mamatimin Abbas "Interface Engineering in Organic Field Effect Transistors"

Dr. Mamatimin Abbas "Interface Engineering in Organic Field Effect Transistors"

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University of Bordeaux, France

What
  • Seminar
When Jun 14, 2017
from 02:15 PM to 03:00 PM
Where Seminarraum A, FMF, Stefan-Meier-Str. 21, Freiburg
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Organic electronics is an emerging field which holds a great promise to change the landscape of electronics. Devices based on organic semiconductors have several advantages over their traditional counterparts: they can be thin, light weight, flexible, stretchable, foldable, wearable, transparent and printable to name a few. This is due to the fact that they can be produced at room temperature from soluble materials on almost any kind of substrates. Over the last decade, chemical and device engineering have greatly improved the performance of organic semiconductors. Reported mobilities from organic field effect transistors (OFETs) largely surpassed that of amorphous silicon, opening up numerous prospective areas for real life applications.

Dielectric/semiconductor and metal/semiconductor interfaces have strong impact on OFET device performance as the former plays key role in charge transport whereas the latter controls the charge injection and extraction.  In this talk, development of water soluble dielectric layer, which has similar low trap densities for both types of carriers, will be firstly presented. Its application for investigating charge transport behaviour of both carriers in several donor/acceptor organic photovoltaic (OPV) systems will be demonstrated, which establishes OFET as a reliable method for charge transport study in OPVs.  In the second part of the talk, device engineering for low voltage operating p-channel OFETs will be demonstrated with special focus on process simplification. Both oxide interfacial layer and polymer passivation will be discussed in detail for achieving high performance OFETs on plastic substrate. Finally, our recent work on n-channel OFET devices will be briefly described.

 

invited by Rukiya Maitsidike

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