NDLI: Memory effect of a polymer thin-film transistor with self-assembled gold nanoparticles in the gate dielectric

Content Provider	IEEE Xplore Digital Library
Author	Zhengchun Liu Fengliang Xue Yi Su Lvov, Y.M. Varahramyan, K.
Copyright Year	2002
Abstract	A self-assembled film of gold nanoparticles is integrated into the gate dielectric of an organic thin-film transistor to produce memory effects. The transistor is fabricated on a heavily doped n-type silicon (n⁺-Si) substrate with a thermally grown oxide layer of 100 nm thick. n⁺-Si serves as the gate electrode while the oxide layer functions as the gate dielectric. Gold nanoparticles as the floating gate for charge storage are deposited on the gate oxide by electrostatic layer-by-layer self-assembly method. A self-assembled multilayer of polyelectrolytes, together with a thin spin-coated poly(4-vinyl phenol) layer, covers the gold nanoparticles and separates them from the poly(3-hexyl thiophene) channel. Gold nanoparticles are charged or discharged with different gate bias so that the channel conductance is modulated. The memory transistor has an on/off ratio over 1500 and data retention time of about 200 s. The low-temperature solution-based process is especially suitable for plastic-based circuits. Therefore, the results of this study could accelerate achievement of cheap and flexible organic nonvolatile memories
Sponsorship	IEEE Nanotechnology Council
Starting Page	379
Ending Page	384
Page Count	6
File Size	1837158
File Format	PDF
ISSN	1536125X
Volume Number	5
Issue Number	4
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2006-07-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Polymer films Thin film transistors Self-assembly Gold Nanoparticles Dielectric substrates Nonvolatile memory Dielectric thin films Organic thin film transistors Silicon traps Gold nanoparticles memory effect polymer thin-film transistor self-assembly
Content Type	Text
Resource Type	Article
Subject	Nanoscience and Nanotechnology Electrical and Electronic Engineering Computer Science Applications

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