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薄膜和衬底结构对Ag(111)上并五苯薄膜光电子动量图的影响。

Influence of Film and Substrate Structure on Photoelectron Momentum Maps of Coronene Thin Films on Ag(111).

作者信息

Udhardt Christian, Otto Felix, Kern Christian, Lüftner Daniel, Huempfner Tobias, Kirchhuebel Tino, Sojka Falko, Meissner Matthias, Schröter Bernd, Forker Roman, Puschnig Peter, Fritz Torsten

机构信息

Institute of Solid State Physics, Friedrich Schiller University Jena, Helmholtzweg 5, 07743 Jena, Germany.

Institute of Physics, University of Graz, NAWI-Graz, Universitätsplatz 5, 8010 Graz, Austria.

出版信息

J Phys Chem C Nanomater Interfaces. 2017 Jun 8;121(22):12285-12293. doi: 10.1021/acs.jpcc.7b03500. Epub 2017 May 11.

DOI:10.1021/acs.jpcc.7b03500
PMID:28620448
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC5467179/
Abstract

Angle-resolved ultraviolet photoelectron spectroscopy (ARUPS) was measured for one-monolayer coronene films deposited on Ag(111). The ( , )-dependent photoelectron momentum maps (PMMs), which were extracted from the ARUPS data by cuts at fixed binding energies, show finely structured patterns for the highest and the second-highest occupied molecular orbitals. While the substructure of the PMM main features is related to the 4 × 4 commensurate film structure, various features with three-fold symmetry imply an additional influence of the substrate. PMM simulations on the basis of both free-standing coronene assemblies and coronene monolayers on the Ag(111) substrate confirm a sizable molecule-molecule interaction because no substructure was observed for PMM simulations using free coronene molecules.

摘要

对沉积在Ag(111)上的单层蒄膜进行了角分辨紫外光电子能谱(ARUPS)测量。通过在固定结合能处进行切割从ARUPS数据中提取的( , )相关光电子动量图(PMMs)，显示了最高占据分子轨道和第二高占据分子轨道的精细结构图案。虽然PMM主要特征的子结构与4×4相称膜结构有关，但具有三重对称性的各种特征意味着衬底有额外影响。基于独立的蒄组装体和Ag(111)衬底上的蒄单层的PMM模拟证实了相当大的分子间相互作用，因为使用自由蒄分子的PMM模拟未观察到子结构。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6009/5467179/f6d849734e97/jp-2017-035003_0007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6009/5467179/b1bfd005e6fb/jp-2017-035003_0001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6009/5467179/5cb36201af19/jp-2017-035003_0002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6009/5467179/afeee41dad93/jp-2017-035003_0003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6009/5467179/3461db977453/jp-2017-035003_0004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6009/5467179/91fa4664e398/jp-2017-035003_0005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6009/5467179/98a9c600fd19/jp-2017-035003_0006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6009/5467179/f6d849734e97/jp-2017-035003_0007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6009/5467179/b1bfd005e6fb/jp-2017-035003_0001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6009/5467179/5cb36201af19/jp-2017-035003_0002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6009/5467179/afeee41dad93/jp-2017-035003_0003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6009/5467179/3461db977453/jp-2017-035003_0004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6009/5467179/91fa4664e398/jp-2017-035003_0005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6009/5467179/98a9c600fd19/jp-2017-035003_0006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6009/5467179/f6d849734e97/jp-2017-035003_0007.jpg

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