Epitaxial Thin Films of Large Organic Molecules: Characterization of Phthalocyanine and Coronene Overlayers on the Layered Semiconductors MoS2 and SnS2
Epitaxial Thin Films of Large Organic Molecules: Characterization of Phthalocyanine and Coronene Overlayers on the Layered Semiconductors MoS2 and SnS2
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DOI：
10.1021/la00020a041
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发表时间：
1994-08
期刊：
影响因子：
3.9
通讯作者：
C. D. England;G. Collins;T. Schuerlein;N. Armstrong
中科院分区：
文献类型：
--
作者：
C. D. England;G. Collins;T. Schuerlein;N. Armstrong
±4，SnS 2）的金属二硫属化物（0001）表面的主要晶格矢量，导致3-6个等效的Pc域。MoS 2上的有序晕苯薄膜由两个六方晶格畴组成，每个畴相对于MoS 2（0001）面的主轴旋转±13.9 °。对MoS 2上吸附的晕苯和MoS 2和SnS 2上的InPcCl进行了建模研究，其中假定纯粹的货车范德华力负责这些有机材料的外延层的取向。通过对多达9个分子的表面晶格上的货车范德华相互作用进行求和，可以表明，结合位点、分子之间的排斥和吸引相互作用以及MoS 2或SnS 2基面中的硫-硫间距的微小差异可能是第一密堆积单分子层取向的原因。
±4, SnS2) the principal lattice vectors of the metal dichalcogenide (0001) surface, resulting in 3-6 equivalent Pc domains. Ordered coronene films on M0S2 consist of two hexagonal lattice domains rotated by±13.9 from each principal axis of the (0001) surface of M0S2. Modeling studies were conducted for adsorbed coronene on M0S2 and for InPcCl on both M0S2 and SnS2, where purely van der Waals forces were presumed to be responsible for the orientation of the epitaxial layers of these organic materials. By summing van der Waals interactions over surface lattices of up to nine molecules, it is possible to show that smalldifferences in the binding site, repulsive and attractive interactions between molecules, and sulfur-sulfur spacing in the M0S2 or SnS2 basal plane may be responsible for the orientations of the first close-packed monolayers.