Authors: Lin, Feng; Fang, Zheyu; Qu, Shengchun; Huang, Shan; Song, Wentao; Chi, Lifeng; Zhu, Xing

Source: Journal of Nanoscience and Nanotechnology, Volume 10, Number 11, November 2010 , pp. 7162-7166(5)

Publisher: American Scientific Publishers

Abstract:

The structural evolution of the ordered N-N′ dibutyl-substituted quinacridone (QA4C) multilayers (3 MLs) has been monitored in situ and in real time at various substrate temperatures using low energy electron diffraction (LEED) during organic molecular beam epitaxy (MBE). Experimental results of LEED patterns clearly reveal that the structure of the multilayer strongly depends on the substrate temperature. Multilayer growth can be achieved at the substrate temperatures below 300 K, while at the higher temperatures we can only get one ordered monolayer of QA4C. Two kinds of structures, the commensurate and incommensurate one, often coexist in the QA4C multilayer. With a method of the two-step substrate temperatures, the incommensurate one can be suppressed, and the commensurate, on the other hand, more similar to the (001) plane of the QA4C bulk crystal, prevails with the layer of QA4C increasing to 3 MLs. The two structures in the multilayers are compressed slightly in comparison to the original ones in the first monolayer.

Keywords: QA4C; MOLECULAR BEAM EPITAXY (MBE); LEED; COMMENSURATE AND INCOMMENSURATE

Document Type: Research article

DOI: http://dx.doi.org/10.1166/jnn.2010.2889

Publication date: 2010-11-01

More about this publication?

• 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.
• Editorial Board
• Information for Authors
• Subscribe to this Title
• Terms & Conditions
• ingentaconnect is not responsible for the content or availability of external websites

Related content

• In this: publication
• By this: publisher
• In this Subject: Technology
• By this author: Lin, Feng ;  Fang, Zheyu ;  Qu, Shengchun ;  Huang, Shan ;  Song, Wentao ;  Chi, Lifeng ;  Zhu, Xing

Website © Publishing Technology. Article copyright remains with the publisher, society or author(s) as specified within the article.

• Terms and conditions
• Privacy policy
• Information for advertisers