Red-green-blue light sensitivity of oxide nanowire transistors for transparent display applications

Sumi Lee, Kyonggi University
Seongmin Kim, Birck Nanotechnology Center, Purdue University
David B. Janes, Birck Nanotechnology Center, Purdue University
M. Meyyappan, NASA, Ames Research Center; Pohang University of Science & Technology (POSTECH)
Sanghyun Ju, Kyonggi University

Date of this Version

1-16-2013

Citation

AIP Advances 3, 012112 (2013)

Comments

Copyright 2013 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. The following article appeared in AIP Advances 3, 012112 (2013) and may be found at http://dx.doi.org/10.1063/1.4789405. The following article has been submitted to/accepted by Advances. Copyright 2013 Sumi Lee, Seongmin Kim, David B. Janes, M. Meyyappan and Sanghyun Ju. This article is distributed under a Creative Commons Attribution 3.0 Unported License.

Abstract

In this study, the sensitivity of oxide nanowire transistors under red (R, 470 nm), green (G, 530 nm), and blue (B, 625 nm) light illumination was investigated. As the wavelength of light illuminating the nanowire channel region became shorter, a negative shift of threshold voltage, degradation of subthreshold slope, and increase of on-current were observed. This phenomenon can be explained in terms of photoinduced holes, creating interfacial traps between the gate dielectric and nanowire channel or reacting with oxygen ions on the surface of the nanowires. Thus, the attempt to minimize characteristic changes due to all RGB light sources was performed by employing ultraviolet-ozone treatment and passivation process. As a result, we could successfully fabricate oxide nanowire transistors providing high optical reliability which has broadened the possibilities for applying it to transparent and/or flexible pixel operation circuitry for displays with high optical reliability. Copyright 2013 Author(s). This article is distributed under a Creative Commons Attribution 3.0 Unported License. [http://dx.doi.org/10.1063/1.4789405]

Discipline(s)

Nanoscience and Nanotechnology

 

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