Crystalline Ultrasmooth Self-Assembled Monolayers of Alkylsilanes for Organic Field-Effect Transistors
SCIE
SCOPUS
- Title
- Crystalline Ultrasmooth Self-Assembled Monolayers of Alkylsilanes for Organic Field-Effect Transistors
- Authors
- Yutaka Ito; Ajay A. Virkar; Stefan Mannsfeld; Oh, JH; Michael Toney; Jason Locklin; Zhenan Bao
- Date Issued
- 2009-07-08
- Publisher
- American Chemical Society
- Abstract
- Crystalline self-assembled monolayers (SAMs) of organosilane compounds such as octadecyltrimethoxysilane (OTMS) and octadecyltrichlorosilane (OTCS) were deposited by a simple, spin-casting technique onto Si/SiO2 substrates. Fabrication of the OTMS SAMs and characterization using ellipsometry, contact angle, atomic force microscopy (AFM), grazing angle attenuated total reflectance Fourier transform infrared (GATR-FTIR) spectroscopy and grazing incidence X-ray diffraction (GIXD) are described. The characterization confirms that these monolayers exhibit a well-packed crystalline phase and a remarkably high degree of smoothness. Semiconductors deposited by vapor deposition onto the crystalline OTS SAM grow in a favorable two-dimensional layered growth manner which is generally preferred morphologically for high charge carrier transport. On the OTMS SAM treated dielectric, pentacene OFETs showed hole mobilities as high as 3.0 cm(2/)V.s, while electron mobilities as high as 5.3 cm(2/)V.s were demonstrated for C-60.
- Keywords
- THIN-FILM TRANSISTORS; HIGH-PERFORMANCE; SEMICONDUCTORS; GROWTH; MORPHOLOGY; TRANSPORT; MOBILITY; ACIDS
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/14364
- DOI
- 10.1021/JA9029957
- ISSN
- 0002-7863
- Article Type
- Article
- Citation
- JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, vol. 131, no. 26, page. 9396 - 9404, 2009-07-08
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