Patterning of α-sexithiophene single crystals with precisely controlled sizes and shapes

Shuhong Liu; Stefan C.B. Mannsfeld; Wechung Maria Wang; Ya Sen Sun; Randall M. Stoltenberg; Zhenan Bao

doi:10.1021/cm802806t

Patterning of α-sexithiophene single crystals with precisely controlled sizes and shapes

Shuhong Liu
, Stefan C.B. Mannsfeld
, Wechung Maria Wang
, Ya Sen Sun
, Randall M. Stoltenberg
, Zhenan Bao

Department of Chemical Engineering

Research output: Contribution to journal › Article › peer-review

28 Citations (Scopus)

Abstract

SiO ₂ surface with patterned Au films was demonstrated to act as an effective template for an organic semiconductor α-6T used in field-effect transistors (FET) applications. The results show that on Au, α-6T forms three-dimensional crystals of smaller size, while on SiO ₂, flat and large two-dimensional crystals are formed. It is also observed that continuous Au films and 3-D crystals on top of the Au films are selectively removed, leaving behind patterned 2-D crystals on the substrate. Patterned α-6T crystals with square, rectangular, and star shapes can also be grown with yield higher than 80%. Atomic force microscopy (AFM) studies show that the obtained crystals are composed of various layers, with the thicknesses of each layer being 2.3 nm, corresponding to a single layer of α-6T molecules.

Original language	English
Pages (from-to)	15-17
Number of pages	3
Journal	Chemistry of Materials
Volume	21
Issue number	1
DOIs	https://doi.org/10.1021/cm802806t
Publication status	Published - 2009 Jan 13

All Science Journal Classification (ASJC) codes

General Chemistry
General Chemical Engineering
Materials Chemistry

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10.1021/cm802806t

Cite this

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title = "Patterning of α-sexithiophene single crystals with precisely controlled sizes and shapes",

abstract = "SiO 2 surface with patterned Au films was demonstrated to act as an effective template for an organic semiconductor α-6T used in field-effect transistors (FET) applications. The results show that on Au, α-6T forms three-dimensional crystals of smaller size, while on SiO 2, flat and large two-dimensional crystals are formed. It is also observed that continuous Au films and 3-D crystals on top of the Au films are selectively removed, leaving behind patterned 2-D crystals on the substrate. Patterned α-6T crystals with square, rectangular, and star shapes can also be grown with yield higher than 80\%. Atomic force microscopy (AFM) studies show that the obtained crystals are composed of various layers, with the thicknesses of each layer being 2.3 nm, corresponding to a single layer of α-6T molecules.",

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doi = "10.1021/cm802806t",

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T1 - Patterning of α-sexithiophene single crystals with precisely controlled sizes and shapes

AU - Liu, Shuhong

AU - Mannsfeld, Stefan C.B.

AU - Wang, Wechung Maria

AU - Sun, Ya Sen

AU - Stoltenberg, Randall M.

AU - Bao, Zhenan

PY - 2009/1/13

Y1 - 2009/1/13

N2 - SiO 2 surface with patterned Au films was demonstrated to act as an effective template for an organic semiconductor α-6T used in field-effect transistors (FET) applications. The results show that on Au, α-6T forms three-dimensional crystals of smaller size, while on SiO 2, flat and large two-dimensional crystals are formed. It is also observed that continuous Au films and 3-D crystals on top of the Au films are selectively removed, leaving behind patterned 2-D crystals on the substrate. Patterned α-6T crystals with square, rectangular, and star shapes can also be grown with yield higher than 80%. Atomic force microscopy (AFM) studies show that the obtained crystals are composed of various layers, with the thicknesses of each layer being 2.3 nm, corresponding to a single layer of α-6T molecules.

AB - SiO 2 surface with patterned Au films was demonstrated to act as an effective template for an organic semiconductor α-6T used in field-effect transistors (FET) applications. The results show that on Au, α-6T forms three-dimensional crystals of smaller size, while on SiO 2, flat and large two-dimensional crystals are formed. It is also observed that continuous Au films and 3-D crystals on top of the Au films are selectively removed, leaving behind patterned 2-D crystals on the substrate. Patterned α-6T crystals with square, rectangular, and star shapes can also be grown with yield higher than 80%. Atomic force microscopy (AFM) studies show that the obtained crystals are composed of various layers, with the thicknesses of each layer being 2.3 nm, corresponding to a single layer of α-6T molecules.

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JO - Chemistry of Materials

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ER -

Patterning of α-sexithiophene single crystals with precisely controlled sizes and shapes

Abstract

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