Diffusion-limited submonolayer pentacene thin film growth on hydrogen-passivated Si(1 1 1) substrates

W. J. Huang; B. Q. Li; J. M. Zuo

doi:10.1016/j.susc.2005.08.004

Diffusion-limited submonolayer pentacene thin film growth on hydrogen-passivated Si(1 1 1) substrates

W. J. Huang, B. Q. Li, J. M. Zuo

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

Abstract

Growth of ultrathin pentacene films is investigated as a function of coverage by atomic force microscopy. Initially, pentacene grows as monolayer fractal islands and evolves into compact islands before coalescence. Stabilization factors, against diffusion-limited-aggregation in terms of interaction between islands and interlayer monomer transport, are proposed to explain the shape transition. Simulations based on a simple model of heterogeneous film growth are found to agree with experimental observations. The role of surface diffusion in island shape transition is revealed by a comparison between pentacene growth on the hydrogen terminated and oxidized Si substrates.

Original language	English (US)
Pages (from-to)	157-164
Number of pages	8
Journal	Surface Science
Volume	595
Issue number	1-3
DOIs	https://doi.org/10.1016/j.susc.2005.08.004
State	Published - Dec 5 2005

Keywords

Atomic force microscopy
Growth
Island shape
Organic thin film

ASJC Scopus subject areas

Physical and Theoretical Chemistry
Condensed Matter Physics
Surfaces and Interfaces

Online availability

10.1016/j.susc.2005.08.004

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title = "Diffusion-limited submonolayer pentacene thin film growth on hydrogen-passivated Si(1 1 1) substrates",

abstract = "Growth of ultrathin pentacene films is investigated as a function of coverage by atomic force microscopy. Initially, pentacene grows as monolayer fractal islands and evolves into compact islands before coalescence. Stabilization factors, against diffusion-limited-aggregation in terms of interaction between islands and interlayer monomer transport, are proposed to explain the shape transition. Simulations based on a simple model of heterogeneous film growth are found to agree with experimental observations. The role of surface diffusion in island shape transition is revealed by a comparison between pentacene growth on the hydrogen terminated and oxidized Si substrates.",

keywords = "Atomic force microscopy, Growth, Island shape, Organic thin film",

author = "Huang, {W. J.} and Li, {B. Q.} and Zuo, {J. M.}",

note = "Funding Information: The work is supported by DOE DEFG02-91ER45439 and DEFG02-01ER45923. The experiments were carried out in the Center for Microanalysis of Materials, University of Illinois, which is partially supported by the US Department of Energy under grant DEFG02-91-ER45439.",

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doi = "10.1016/j.susc.2005.08.004",

language = "English (US)",

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AU - Huang, W. J.

AU - Li, B. Q.

AU - Zuo, J. M.

N1 - Funding Information: The work is supported by DOE DEFG02-91ER45439 and DEFG02-01ER45923. The experiments were carried out in the Center for Microanalysis of Materials, University of Illinois, which is partially supported by the US Department of Energy under grant DEFG02-91-ER45439.

PY - 2005/12/5

Y1 - 2005/12/5

N2 - Growth of ultrathin pentacene films is investigated as a function of coverage by atomic force microscopy. Initially, pentacene grows as monolayer fractal islands and evolves into compact islands before coalescence. Stabilization factors, against diffusion-limited-aggregation in terms of interaction between islands and interlayer monomer transport, are proposed to explain the shape transition. Simulations based on a simple model of heterogeneous film growth are found to agree with experimental observations. The role of surface diffusion in island shape transition is revealed by a comparison between pentacene growth on the hydrogen terminated and oxidized Si substrates.

AB - Growth of ultrathin pentacene films is investigated as a function of coverage by atomic force microscopy. Initially, pentacene grows as monolayer fractal islands and evolves into compact islands before coalescence. Stabilization factors, against diffusion-limited-aggregation in terms of interaction between islands and interlayer monomer transport, are proposed to explain the shape transition. Simulations based on a simple model of heterogeneous film growth are found to agree with experimental observations. The role of surface diffusion in island shape transition is revealed by a comparison between pentacene growth on the hydrogen terminated and oxidized Si substrates.

KW - Atomic force microscopy

KW - Growth

KW - Island shape

KW - Organic thin film

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Diffusion-limited submonolayer pentacene thin film growth on hydrogen-passivated Si(1 1 1) substrates

Abstract

Keywords

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