H2Pc and pentacene on Cu(110)-(2×1)O: A combined STM and nc-AFM study

Angel Garlant; Bret Maughan; Percy Zahl; Oliver L.A. Monti

doi:10.1016/j.susc.2020.121590

H₂Pc and pentacene on Cu(110)-(2×1)O: A combined STM and nc-AFM study

Angel Garlant, Bret Maughan, Percy Zahl, Oliver L.A. Monti

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

4 Scopus citations

Abstract

Scanning tunneling microscopy (STM) and non-contact atomic force microscopy (nc-AFM) with a CuO tip is used to investigate adsorption of metal-free phthalocyanine (H₂Pc) and pentacene on the Cu(110)-(2×1)O striped-phase reconstructed surface. We show that the combination of STM and nc-AFM is necessary to reveal the detailed adsorption geometry, necessary for interpreting the observed STM contrast. Comparison of the nc-AFM images with simulations shows that some of the H₂Pc molecules are deformed out-of-plane on this surface, while pentacene retains its molecular geometry regardless of adsorption site. Our work highlights how the stiffness of CuO tips makes it possible to probe the structure of organic semiconductor / metal interfaces.

Original language	English (US)
Article number	121590
Journal	Surface Science
Volume	696
DOIs	https://doi.org/10.1016/j.susc.2020.121590
State	Published - Jun 2020

Keywords

Nanostructured surface
Noncontact atomic force microscopy
Scanning tunneling microscopy
Tip functionalization

ASJC Scopus subject areas

Condensed Matter Physics
Surfaces and Interfaces
Surfaces, Coatings and Films
Materials Chemistry

Access to Document

10.1016/j.susc.2020.121590

Cite this

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title = "H2Pc and pentacene on Cu(110)-(2×1)O: A combined STM and nc-AFM study",

abstract = "Scanning tunneling microscopy (STM) and non-contact atomic force microscopy (nc-AFM) with a CuO tip is used to investigate adsorption of metal-free phthalocyanine (H2Pc) and pentacene on the Cu(110)-(2×1)O striped-phase reconstructed surface. We show that the combination of STM and nc-AFM is necessary to reveal the detailed adsorption geometry, necessary for interpreting the observed STM contrast. Comparison of the nc-AFM images with simulations shows that some of the H2Pc molecules are deformed out-of-plane on this surface, while pentacene retains its molecular geometry regardless of adsorption site. Our work highlights how the stiffness of CuO tips makes it possible to probe the structure of organic semiconductor / metal interfaces.",

keywords = "Nanostructured surface, Noncontact atomic force microscopy, Scanning tunneling microscopy, Tip functionalization",

author = "Angel Garlant and Bret Maughan and Percy Zahl and Monti, {Oliver L.A.}",

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doi = "10.1016/j.susc.2020.121590",

language = "English (US)",

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T1 - H2Pc and pentacene on Cu(110)-(2×1)O

T2 - A combined STM and nc-AFM study

AU - Garlant, Angel

AU - Maughan, Bret

AU - Zahl, Percy

AU - Monti, Oliver L.A.

PY - 2020/6

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N2 - Scanning tunneling microscopy (STM) and non-contact atomic force microscopy (nc-AFM) with a CuO tip is used to investigate adsorption of metal-free phthalocyanine (H2Pc) and pentacene on the Cu(110)-(2×1)O striped-phase reconstructed surface. We show that the combination of STM and nc-AFM is necessary to reveal the detailed adsorption geometry, necessary for interpreting the observed STM contrast. Comparison of the nc-AFM images with simulations shows that some of the H2Pc molecules are deformed out-of-plane on this surface, while pentacene retains its molecular geometry regardless of adsorption site. Our work highlights how the stiffness of CuO tips makes it possible to probe the structure of organic semiconductor / metal interfaces.

AB - Scanning tunneling microscopy (STM) and non-contact atomic force microscopy (nc-AFM) with a CuO tip is used to investigate adsorption of metal-free phthalocyanine (H2Pc) and pentacene on the Cu(110)-(2×1)O striped-phase reconstructed surface. We show that the combination of STM and nc-AFM is necessary to reveal the detailed adsorption geometry, necessary for interpreting the observed STM contrast. Comparison of the nc-AFM images with simulations shows that some of the H2Pc molecules are deformed out-of-plane on this surface, while pentacene retains its molecular geometry regardless of adsorption site. Our work highlights how the stiffness of CuO tips makes it possible to probe the structure of organic semiconductor / metal interfaces.

KW - Nanostructured surface

KW - Noncontact atomic force microscopy

KW - Scanning tunneling microscopy

KW - Tip functionalization

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