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Proceedings Paper

Metal-organic pentacene derivative with well ordered morphology for the application of low voltage organic thin film transistors
Author(s): V. A. L. Roy; Zong-Xiang Xu; Yong-Gang Zhi; Sze-Chit Yu; Chi-Ming Che
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Paper Abstract

Metal organic pentacene based low voltage organic thin film transistors with field effect mobility as large as 0.8 cm2/V-1.s-1 and on/off current ratio larger than 106 have been fabricated. Thin films deposited by evaporation at different deposition rate has different morphology which leads to a difference in transistor characteristics. The films with a deposition rate of 2A/sec has better morphology and also the transistor behavior. AFM (atomic force microscope) and STM (scanning tunneling microscope) were used to understand the morphology and ordering of the molecules on the silicon surface which helps the transistor to operate at low voltages. The results presented here show a strong correlation between molecular ordering and the need of well-ordered films for the performance of organic thin film transistors (OTFT's).

Paper Details

Date Published: 23 September 2005
PDF: 7 pages
Proc. SPIE 5940, Organic Field-Effect Transistors IV, 59401L (23 September 2005); doi: 10.1117/12.629622
Show Author Affiliations
V. A. L. Roy, The Univ. of Hong Kong (Hong Kong China)
Zong-Xiang Xu, The Univ. of Hong Kong (Hong Kong China)
Yong-Gang Zhi, The Univ. of Hong Kong (Hong Kong China)
Sze-Chit Yu, The Univ. of Hong Kong (Hong Kong China)
Chi-Ming Che, The Univ. of Hong Kong (Hong Kong China)


Published in SPIE Proceedings Vol. 5940:
Organic Field-Effect Transistors IV
Zhenan Bao; David J. Gundlach, Editor(s)

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