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Current percolation in ultrathin channel nanocrystalline silicon transistors

Guo, X, Silva, SRP and Ishii, T (2008) Current percolation in ultrathin channel nanocrystalline silicon transistors APPLIED PHYSICS LETTERS, 93 (4). ? - ?. ISSN 0003-6951

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Abstract

The ultrathin channel nanocrystalline silicon transistor shows greatly improved switching performance and has demonstrated its candidacy for low power applications. In this work, by careful observation of the current-voltage and threshold voltage characteristics, we find that current percolation occurs when the channel is thinner than 3.0 nm due to strong quantum confinement induced large potential variations over the channel. We show that the device channel width must be at least 0.3 mu m to avoid percolative "pinch off" for 0.5 mu m channel length devices. Theoretical analysis performed on the devices agrees well with the experimental data and provides important guidelines to model and optimize the devices for circuit design. (C) 2008 American Institute of Physics.

Item Type: Article
Uncontrolled Keywords: Science & Technology, Physical Sciences, Physics, Applied, Physics, CONDUCTION, MEMORY, FILM
Related URLs:
Divisions: Faculty of Engineering and Physical Sciences > Electronic Engineering > Advanced Technology Institute > Nano-Electronics Centre
Depositing User: Mr Adam Field
Date Deposited: 27 May 2010 14:08
Last Modified: 23 Sep 2013 18:27
URI: http://epubs.surrey.ac.uk/id/eprint/381

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