Unraveling giant Cu（110） surface restructuring induced by a non-planar phthalocyanine  

作　　者：Nataliya Kalashnyk Luke A. Rochford Dongzhe Li Alexander Smogunov Yannick J. Dappe Tim S. Jones Laurent Guillemot 

机构地区：[1]Institut des Sciences Moleculaires d'Orsay, CNRS, Universite Paris-Sud 11, Orsay 91405, France [2]School of Chemistry, The University of Birmingham, Birmingham B15 2TT, UK [3]Department of Physics, University ofKonstanz, Konstanz 78457, Germany [4]SPEC, CEA, CNRS, Universite Paris-Saclay, CEA Saclay, Gif-sur-Yvette Cedex 91191, France

出　　处：《Nano Research》2018年第5期2605-2611,共7页纳米研究（英文版）

摘　　要：The surface stability of coinage metals is paramount when they are used as electrode materials for functional electronic devices incorporating organic semiconductors. In this work, it is shown that the adsorption of non-planar vanadyl phthalocyanine molecules on Cu（110） drastically restructured the metal surface at room temperature, which was further enhanced upon moderate annealing. Scanning tunneling microscopy imaging demonstrated that the surface was restructured at step edges into sawtooth features that gradually replaced the （110） terraces. The edges of the modified steps were preferentially composed of chiral （1×6） kink sites decorated with vanadyl phthalocyanine molecules adsorbed in a tilted configuration with the oxygen atom pointing downwards. These results can have a strong impact on the optimization of the performance of organic devices integrated with phthalocyanine molecules.The surface stability of coinage metals is paramount when they are used as electrode materials for functional electronic devices incorporating organic semiconductors. In this work, it is shown that the adsorption of non-planar vanadyl phthalocyanine molecules on Cu（110） drastically restructured the metal surface at room temperature, which was further enhanced upon moderate annealing. Scanning tunneling microscopy imaging demonstrated that the surface was restructured at step edges into sawtooth features that gradually replaced the （110） terraces. The edges of the modified steps were preferentially composed of chiral （1×6） kink sites decorated with vanadyl phthalocyanine molecules adsorbed in a tilted configuration with the oxygen atom pointing downwards. These results can have a strong impact on the optimization of the performance of organic devices integrated with phthalocyanine molecules.

关 键 词：surface restructuring step-etching chiral kink PHTHALOCYANINE 

分 类 号：TP391.41[自动化与计算机技术—计算机应用技术] TP333[自动化与计算机技术—计算机科学与技术]