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Effect of Illumination on Organic Polymer Thin-Film Transistors

Published online by Cambridge University Press:  15 February 2011

Michael C. Hamilton ,
Sandrine Martin  and
Jerzy Kanicki
Michael C. Hamilton
Affiliation:
Solid-State Electronics Laboratory, EECS Department, The University of Michigan Ann Arbor, MI 48109-2108, U.S.A.
Sandrine Martin
Affiliation:
Solid-State Electronics Laboratory, EECS Department, The University of Michigan Ann Arbor, MI 48109-2108, U.S.A.
Jerzy Kanicki
Affiliation:
Also with Center for Polymers and Organic Solids (sabbatical), University of California Santa Barbara, CA 93106-5090, U.S.A.
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Abstract

We have investigated the effects of white-light illumination on the electrical performance of organic polymer thin-film transistors (OP-TFTs). The OFF-state drain current is significantly increased, while the drain current in the strong accumulation regime is relatively unaffected. At the same time, the threshold voltage is decreased and the subthreshold slope is increased, while the field-effect mobility of the charge carriers is not affected. The observed effects are explained in terms of the photogeneration of free charge carriers in the channel region due to the absorbed photons.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 771: Symposium L – Organic and Polymeric Materials and Devices , 2003 , L10.17
Copyright
Copyright © Materials Research Society 2003

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References

[1] Narayan, K.S., Manoj, A.G., Singh, Th.B., Alagiriswamy, A.A., Thin Sol. Films 417, 75 (2002).Google Scholar
[2] Martin, S. and Kanicki, J., J. of Elec. Mat. 31, 512 (2002).Google Scholar
[3] Pierret, R.F., Semiconductor Device Physics, (Addison-Wesley, Reading, 1996) p. 620.Google Scholar