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:
The journal of physical chemistry letters
影响因子:
--
通讯作者:
T. Fritz
T. Fritz
中科院分区:
--
文献类型:
--
作者:
C. Wagner;R. Forker;T. Fritz

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有机薄膜的材料性质强烈地依赖于它们的有序性。不同类型的外延可能会使对各种有序系统的探索及其在潜在电子器件中的开发复杂化。在这封信中,我们开发了一个连贯的描述,创造外延系统的驱动力。我们专注于平躺的有机吸附物和解释相称,点上线,线上线外延的能量增益。我们使用势能图来可视化我们的概念,并推导出一个关系,允许从低能电子衍射(LEED)数据预测外延生长。一个统一的描述有利于实验观察到的吸附质结构的识别和解释,而合理化的预期从LEED意味着一个相当大的速度增益,如果合适的候选人有机-有机外延搜索在一个组合的方法。
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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发表时间: 2008-10-01
影响因子: 3.7
作者:
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通讯作者: Campione, Marcello
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DOI: --
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期刊:
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