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Artificial Grain Alignment of Organic Crystalline Thin Films

Published online by Cambridge University Press:  01 February 2011

Toshihiro Shimada
Toshihiro Shimada*
Affiliation:
[email protected], United States
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Abstract

It is important to obtain single crystalline organic thin films for electronics and optics applications. Due to the mismatching in the crystal symmetry, it is difficult to align the crystalline grains of organic molecular films even on single crystalline surfaces. We have developed several techniques for the artificial grain alignment in organic epitaxial growth. (1) Use of nanoscale-textured surfaces prepared by step bunching of vicinally-cut single crystalline surfaces, in which the height of the steps is critically important. (2) Application of external electric field. (3) Optical excitation of the molecules which can be applied to the polar semiconducting molecules. These techniques might be applicable to other materials including ionic materials and ferroelectrics.

Keywords

organicepitaxythin film
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 1150: Symposium RR – Artificially Induced Grain Alignment in Thin Films , 2008 , 1150-RR06-05
Copyright
Copyright © Materials Research Society 2009

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References

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