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공과대학
전자전기공학전공
Journal papers
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Controlling the electrical properties of pentacene-based organic inverter by ultraviolet
Title
Controlling the electrical properties of pentacene-based organic inverter by ultraviolet
Authors
Choi J.-M.
;
Choi W.
;
Lee S.
;
Im S.
Ewha Authors
이승준
SCOPUS Author ID
이승준
Issue Date
2008
Journal Title
Synthetic Metals
ISSN
0379-6779
Citation
Synthetic Metals vol. 158, no. 21-24, pp. 1072 - 1076
Indexed
SCI; SCIE; SCOPUS
Document Type
Letter
Abstract
We report on the fabrication of pentacene-based organic inverter with two p-channel thin-film transistors (TFTs) on polymer/AlO x bilayer dielectric, which has been patterned by using high-energy ultraviolet (UV, 254 nm) illumination. After pentacene-channel growth on the dielectric, our inverter showed a high-voltage gain of ∼8 under -6 V supply voltage (V DD) but voltage transfer characteristics (VTC) curve is too marginal to guarantee a desirable inverter operation between 0 and -6 V. When low-energy UV (352 nm) was applied onto one of the two p-TFTs, which plays as a load in the inverter circuit, the VTC curve was adjusted to be more adequate for inverting operation due to the UV-induced modification on the threshold voltage and channel resistance of the load-TFT. Our UV-treated inverter also demonstrated much faster inverting dynamics than that of pristine inverter due to the lowered channel resistance of load-TFT. © 2008 Elsevier B.V. All rights reserved.
DOI
10.1016/j.synthmet.2008.05.008
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