C60 on alkali halides:: Epitaxy and morphology studied by noncontact AFM
C60 on alkali halides:: Epitaxy and morphology studied by noncontact AFM
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DOI：
10.1103/physrevb.76.035419
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发表时间：
2007-07-01
影响因子：
3.7
通讯作者：
Gruetter, P.
中科院分区：
文献类型：
--
作者：
Burke, S. A.;Mativetsky, J. M.;Gruetter, P.
亚单层覆盖的C-60沉积在KBr和NaCl的非接触原子力显微镜的特征在于。岛的形状进行了定性和定量描述，并讨论了它们对生长参数和衬底的依赖性。在室温下，观察到紧凑和分支岛形态共存。岛屿地区的分析表明，一个明显的过渡，从紧凑的分支形态与岛屿面积的增加。高分辨率成像显示不同的一致外延步骤和开放的梯田，尽管一致的形态在两个基板位置的岛屿。分子去湿被认为是形成分支岛的一种机制。
Submonolayer coverages of C-60 deposited on KBr and NaCl are characterized by noncontact atomic force microscopy. Island shapes are described both qualitatively and quantitatively and their dependence on growth parameters and substrate is discussed. At room temperature, both compact and branched island morphologies are observed to coexist. An analysis of the island areas shows a distinct transition from compact to branched morphology with increasing island area. High-resolution imaging reveals differing coincident epitaxy at steps and on open terraces, despite consistent morphology for islands at both substrate positions. Molecular dewetting is proposed as a mechanism for the formation of branched islands.