On the Origin of the Energy Gain in Epitaxial Growth of Molecular Films.
On the Origin of the Energy Gain in Epitaxial Growth of Molecular Films.
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分子薄膜外延生长能量增益的起源
DOI:
10.1021/jz2015605
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发表时间:
2012
期刊:
影响因子:
--
通讯作者:
T. Fritz
中科院分区:
文献类型:
--
作者:
C. Wagner;R. Forker;T. Fritz
The material properties of organic thin films depend strongly on their order. The different types of epitaxy may complicate the exploration of the large variety of ordered systems and its exploitation in potential electronic devices. In this Letter, we develop a coherent description of the driving force that creates epitaxial systems. We focus on flat-lying organic adsorbates and explain the energy gain in commensurate, point-on-line, and line-on-line epitaxy. We use potential energy maps to visualize our concept and to derive a relation that allows anticipating epitaxial growth from low-energy electron diffraction (LEED) data. A unified description facilitates the identification and interpretation of experimentally observed adsorbate structures, whereas the rationalized expectation from LEED means a considerable speed gain if suitable candidates for organic–organic epitaxy are searched for in a combinatory approach.
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影响因子:
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DOI:
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