Role of step edges on the structure formation of α-6T on Ag(441)

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26210%2F17%3APU125168" target="_blank" >RIV/00216305:26210/17:PU125168 - isvavai.cz</a>

Result on the web

<a href="https://doi.org/10.1016/j.susc.2017.09.008" target="_blank" >https://doi.org/10.1016/j.susc.2017.09.008</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.susc.2017.09.008" target="_blank" >10.1016/j.susc.2017.09.008</a>

Result language

angličtina

Original language name

Role of step edges on the structure formation of α-6T on Ag(441)

Original language description

Controlling the orientation of organic molecules on surfaces is important in order to tune the physical properties of the organic thin films and, thereby, increase the performance of organic thin film devices. Here, we present a scanning tunneling microscopy (STM) and photoelectron emission microscopy (PEEM) study of the deposition of the organic dye pigment α-sexithiophene (α-6T) on the vicinal Ag(441) surface. In the presence of the steps on the Ag(441) surface, the α -6T molecules exclusively align parallel to the step edges oriented along the [1View the MathML source0]-direction of the substrate. The STM results further reveal that the adsorption of the α-6T molecules is accompanied by various restructuring of the substrate surface: Initially, the molecules prefer the Ag(551) building blocks of the Ag(441) surface. The Ag(551) termination of the terraces is then changed to a predominately Ag(331) one upon completion of the first α-6T monolayer. When closing the two layer thick wetting layer, the original ratio of Ag(331) and Ag(551) building blocks ( ≈ 1:1) is recovered, but a phase separation into microfacets, which are composed either of Ag(331) or of Ag(551) building blocks, is found.

Czech name

—

Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

10302 - Condensed matter physics (including formerly solid state physics, supercond.)

Project

—

Continuities

S - Specificky vyzkum na vysokych skolach

Publication year

2017

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Surface Science

ISSN

0039-6028

e-ISSN

1879-2758

Volume of the periodical

667

Issue of the periodical within the volume

1

Country of publishing house

NL - THE KINGDOM OF THE NETHERLANDS

Number of pages

8

Pages from-to

17-24

UT code for WoS article

000416189800004

EID of the result in the Scopus database

2-s2.0-85030123278