Journal
AIP ADVANCES
Volume 2, Issue 3, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.4742853
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Funding
- Industrial Strategic Technology Development Program [10035225]
- MKE/KEIT
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Bias-induced charge migration in amorphous oxide semiconductor thin-film transistors (TFTs) confirmed by overshoots of mobility after bias stressing dual gated TFTs is presented. The overshoots in mobility are reversible and only occur in TFTs with a full bottom-gate (covers the whole channel) and partial top-gate (covers only a portion of the channel), indicating a bias-induced uneven distribution of ionized donors: Ionized donors migrate towards the region of the channel that is located underneath the partial top-gate and the decrease in the density of ionized donors in the uncovered portion results in the reversible increase in mobility. Copyright 2012 Author(s). This article is distributed under a Creative Commons Attribution 3.0 Unported License. [http://dx.doi.org/10.1063/1.4742853]
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