Order-disorder transition in the Molecular Orientation dueing Initial Grwoth of Organic Thin Film

Title
Order-disorder transition in the Molecular Orientation dueing Initial Grwoth of Organic Thin Film
Authors
권순남Tae Gun Kim최원국강상욱김정원
Keywords
molecular orientation; organic thin film; photoemission; photoelectron spectroscopy; quantum mechanical calculation; order-disorder transition
Issue Date
2013-03
Publisher
ACS Applied Materials & Interfaces
Citation
VOL 5, NO 6, 1896-1901
Abstract
We report on the identification of molecular orientation and its order–disorder transition during the initial growth of 1,3-bis(N-carbazolyl)benzene (mCP) thin films on a highly ordered pyrolytic graphite (HOPG) surface by using photoelectron spectroscopy (PES). Theoretical PES amplitudes using a quantum mechanical calculation that adapts independent atomic center approximation (IAC) were calculated to compare with experimental observations. At low coverage, an equilibrium orientation of isolated adsorbate was estimated. As the coverage increases, the interaction between adsorbates becomes dominant and raises the disorder, which results in changes in the PES shapes as well as the line broadening of each peak.
URI
http://pubs.kist.re.kr/handle/201004/45014
ISSN
19448244
Appears in Collections:
KIST Publication > Article
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