Hysteresis and threshold voltage shift of pentacene thin-film transistors and inverters with Al2O3 gate dielectric
Authors:
- 26 March 2007
- journal article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 90 (13) , 133503
Abstract
The pentacene organic thin-film transistors (OTFTs) with plasma-enhanced atomic-layer-deposited 150nm thick Al2O3 as a gate dielectric and the inverters comprised of these OTFTs have been fabricated. The hysteresis in transfer characteristics of the OTFTs depends on the scan range of negative gate voltage, regardless of drain voltage. Negative gate-bias stress leads to the progressive negative shift of threshold voltage. The hysteresis of D inverter is similar to that of E inverter, but the former has a wider swing range and a higher gain in comparison with the latter.Keywords
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