Structural transition of pentacene monolayer on Ga bilayer: From brick-wall structure to herringbone pattern of molecular dimers

Jun Zhong Wang; Ke Hui Wu; Wei Sheng Yang; Xing Jun Wang; J. T. Sadowski; Y. Fujikawa; T. Sakurai

doi:10.1016/j.susc.2005.01.049

Structural transition of pentacene monolayer on Ga bilayer: From brick-wall structure to herringbone pattern of molecular dimers

Jun Zhong Wang, Ke Hui Wu, Wei Sheng Yang, Xing Jun Wang, J. T. Sadowski, Y. Fujikawa, T. Sakurai

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

6 Citations (Scopus)

Abstract

Utilizing the substrate of Ga bilayer grown on Si(1 1 1)-√3 × √3-Ga, we have investigated the structural transition of pentacene monolayer induced by moderate annealing. Short-range ordering has been observed in the monolayer pentacene deposited at room temperature. Annealing the sample at ∼350 K produced ordered pentacene monolayer with the "brick- wall" adsorption pattern. The STM images with sub-molecular resolution revealed that the orbital symmetry of the HOMO is reduced from D_2h to C_2v, due to the substrate-molecule interaction, while the deeper HOMO-1 orbital remains intact. Further annealing at ∼400 K led to the formation of molecular dimers as well as the structural transition from "brick-wall" packing to "herringbone" pattern.

Original language	English
Pages (from-to)	80-88
Number of pages	9
Journal	Surface Science
Volume	579
Issue number	1
DOIs	https://doi.org/10.1016/j.susc.2005.01.049
Publication status	Published - 2005 Mar 20

Keywords

Gallium bilayer
Molecule-solid reaction
Pentacene
Scanning tunneling microscopy
Surface structure

ASJC Scopus subject areas

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

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@article{e80559bc6eb04763a266d519e6b07282,

title = "Structural transition of pentacene monolayer on Ga bilayer: From brick-wall structure to herringbone pattern of molecular dimers",

abstract = "Utilizing the substrate of Ga bilayer grown on Si(1 1 1)-√3 × √3-Ga, we have investigated the structural transition of pentacene monolayer induced by moderate annealing. Short-range ordering has been observed in the monolayer pentacene deposited at room temperature. Annealing the sample at ∼350 K produced ordered pentacene monolayer with the {"}brick- wall{"} adsorption pattern. The STM images with sub-molecular resolution revealed that the orbital symmetry of the HOMO is reduced from D2h to C2v, due to the substrate-molecule interaction, while the deeper HOMO-1 orbital remains intact. Further annealing at ∼400 K led to the formation of molecular dimers as well as the structural transition from {"}brick-wall{"} packing to {"}herringbone{"} pattern.",

keywords = "Gallium bilayer, Molecule-solid reaction, Pentacene, Scanning tunneling microscopy, Surface structure",

author = "Wang, {Jun Zhong} and Wu, {Ke Hui} and Yang, {Wei Sheng} and Wang, {Xing Jun} and Sadowski, {J. T.} and Y. Fujikawa and T. Sakurai",

year = "2005",

month = mar,

day = "20",

doi = "10.1016/j.susc.2005.01.049",

language = "English",

volume = "579",

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journal = "Surface Science",

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publisher = "Elsevier",

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TY - JOUR

T1 - Structural transition of pentacene monolayer on Ga bilayer

T2 - From brick-wall structure to herringbone pattern of molecular dimers

AU - Wang, Jun Zhong

AU - Wu, Ke Hui

AU - Yang, Wei Sheng

AU - Wang, Xing Jun

AU - Sadowski, J. T.

AU - Fujikawa, Y.

AU - Sakurai, T.

PY - 2005/3/20

Y1 - 2005/3/20

N2 - Utilizing the substrate of Ga bilayer grown on Si(1 1 1)-√3 × √3-Ga, we have investigated the structural transition of pentacene monolayer induced by moderate annealing. Short-range ordering has been observed in the monolayer pentacene deposited at room temperature. Annealing the sample at ∼350 K produced ordered pentacene monolayer with the "brick- wall" adsorption pattern. The STM images with sub-molecular resolution revealed that the orbital symmetry of the HOMO is reduced from D2h to C2v, due to the substrate-molecule interaction, while the deeper HOMO-1 orbital remains intact. Further annealing at ∼400 K led to the formation of molecular dimers as well as the structural transition from "brick-wall" packing to "herringbone" pattern.

AB - Utilizing the substrate of Ga bilayer grown on Si(1 1 1)-√3 × √3-Ga, we have investigated the structural transition of pentacene monolayer induced by moderate annealing. Short-range ordering has been observed in the monolayer pentacene deposited at room temperature. Annealing the sample at ∼350 K produced ordered pentacene monolayer with the "brick- wall" adsorption pattern. The STM images with sub-molecular resolution revealed that the orbital symmetry of the HOMO is reduced from D2h to C2v, due to the substrate-molecule interaction, while the deeper HOMO-1 orbital remains intact. Further annealing at ∼400 K led to the formation of molecular dimers as well as the structural transition from "brick-wall" packing to "herringbone" pattern.

KW - Gallium bilayer

KW - Molecule-solid reaction

KW - Pentacene

KW - Scanning tunneling microscopy

KW - Surface structure

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JF - Surface Science

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