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Accurate and Simultaneous Determination of Carrier Density and Mobility in Organic Semi-conducting Materials

Published online by Cambridge University Press:  31 January 2011

Kai Shum ,
Zhuo Chen ,
Chenming Xue  and
Shi Jin
Kai Shum
Affiliation:
[email protected], Brooklyn College, Physics, 2900 Bedford Ave, Brooklyn, New York, 11210, United States
Zhuo Chen
Affiliation:
[email protected], brooklyn college, physics, brooklyn, New York, United States
Chenming Xue
Affiliation:
[email protected], csi, chemistry, statenisland, New York, United States
Shi Jin
Affiliation:
[email protected], CSI, chemistry, staten island, New York, United States
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Abstract

How to accurately determine carrier mobility and density in organic semiconducting materials is a very important subject for their optoelectronic applications including light-emitting diodes, solar cells, and thin film field-effect transistors. In this work, we report on a unique data analysis procedure for space-charge limited currents to simultaneously obtain the carrier density and mobility in semiconducting organic-materials. This procedure has been used for a few newly synthesized perylene tetracarboxylic diimide (PDI) derivatives with tunable π-stack structures without altering the electronic characteristic of individual molecules. How π-stack structural variation and residual carrier density affect electron transport performance will be discussed.

Keywords

organicoptoelectronicchemical synthesis
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 1154: Symposium B – Concepts in Molecular and Organic Electronics , 2009 , 1154-B10-95
Copyright
Copyright © Materials Research Society 2009

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