Metal-organic pentacene derivative with well ordered morphology for the application of low voltage organic thin film transistors

V. A.L. Roy, Zong Xiang Xu, Yong Gang Zhi, Sze Chit Yu, Chi Ming Che

Research output: Contribution to journalConference articlepeer-review

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).

Original languageEnglish
Article number59401L
Pages (from-to)1-7
Number of pages7
JournalProceedings of SPIE - The International Society for Optical Engineering
Volume5940
DOIs
Publication statusPublished - 2005
Externally publishedYes
EventOrganic Field-Effect Transistors IV - San Diego, CA, United States
Duration: 31 Jul 20052 Aug 2005

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