Effect of Curing Temperature on Nano-Silver Paste Ink for Organic Thin-Film Transistors

Authors: Kim, Minseok; Koo, Jae Bon; Baeg, Kang-Jun; Noh, Yong-Young; Yang, Yong Suk; Jung, Soon-Won; Ju, Byeong-Kwon; You, In-Kyu

Source: Journal of Nanoscience and Nanotechnology, Volume 12, Number 4, April 2012 , pp. 3272-3275(4)

Publisher: American Scientific Publishers

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Abstract:

Silver (Ag) metal electrode having 20 μm channel length was printed by reverse offset printing (ROP) using nano-silver paste ink for the source/drain of organic thin-film transistors (OTFT). Specific resistance and surface roughness of printed Ag electrodes with increasing curing temperature were investigated, and surface morphology and grain growth mechanism were systematically verified using a scanning electron microscope (SEM) and atomic force microscope (AFM) in order to obtain an optimized ROP Ag electrode. The Ag electrode was applied to fabricate top-gate/bottom-contact poly(3-hexylthiophene) OTFT devices, which showed reproducible OTFT characteristics such as the field-effect mobility, threshold voltage, and an on/off-current ratio of ∼10−3 cm2/Vs, 0.36 V, and ∼102, respectively.

Document Type: Research Article

DOI: http://dx.doi.org/10.1166/jnn.2012.5639

Publication date: April 1, 2012

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  • Journal for Nanoscience and Nanotechnology (JNN) is an international and multidisciplinary peer-reviewed journal with a wide-ranging coverage, consolidating research activities in all areas of nanoscience and nanotechnology into a single and unique reference source. JNN is the first cross-disciplinary journal to publish original full research articles, rapid communications of important new scientific and technological findings, timely state-of-the-art reviews with author's photo and short biography, and current research news encompassing the fundamental and applied research in all disciplines of science, engineering and medicine.
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