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Proceedings Paper

Stability improvement of organic TFTs by selective interface treatment for display applications
Author(s): K. Nomoto; R. Yasuda; N. Hirai; I. Yagi; N. Yoneya; M. Noda; A. Yumoto; J. Kasahara
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Paper Abstract

We have developed a flexible full-color OLED display driven by pentacene organic TFTs (OTFTs) with bottom-gate bottom-contact configuration. We will discuss an integration process of the display and improvement of stability by selective treatment of interfaces in the OTFTs. We have developed selective treatment of the surface of poly (vinyl-phenol) gate insulator using the selective growth of poly(p-chloroxylylene) after S/D electrode formation. This treatment has reduced deep carrier-trap density at semiconductor/gate insulator interface and has drastically suppressed bias-stress instability of the OTFTs. Direct carrier-injection structure with selective tiole treatment of S/D electrodes has been also developed. This suppresses the degradation of the OTFT due to increase of contact resistance in the integration. These techniques are promising for reliable display applications.

Paper Details

Date Published: 25 August 2008
PDF: 10 pages
Proc. SPIE 7054, Organic Field-Effect Transistors VII and Organic Semiconductors in Sensors and Bioelectronics, 70540R (25 August 2008); doi: 10.1117/12.795027
Show Author Affiliations
K. Nomoto, Sony Corp. (Japan)
R. Yasuda, Sony Corp. (Japan)
N. Hirai, Sony Corp. (Japan)
I. Yagi, Sony Corp. (Japan)
N. Yoneya, Sony Corp. (Japan)
M. Noda, Sony Corp. (Japan)
A. Yumoto, Sony Corp. (Japan)
J. Kasahara, Sony Corp. (Japan)

Published in SPIE Proceedings Vol. 7054:
Organic Field-Effect Transistors VII and Organic Semiconductors in Sensors and Bioelectronics
Zhenan Bao; Ruth Shinar; Iain McCulloch, Editor(s)

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