Molecular Alignment and Electronic Structure of N,N′-Dibutyl-3,4,9,10-perylene-tetracarboxylic-diimide Molecules on MoS2 Surfaces
| Autor: | Jishan Wu, Andrivo Rusydi, Andrew T. S. Wee, Qixing Wang, Zhibo Song, Dianyu Qi, Mohammad H. bin Hassan, Arramel, Xinmao Yin, Yu J. Zheng |
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| Rok vydání: | 2017 |
| Předmět: |
Materials science
Photoemission spectroscopy 02 engineering and technology Electronic structure 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences XANES 0104 chemical sciences Organic semiconductor chemistry.chemical_compound Crystallography X-ray photoelectron spectroscopy chemistry General Materials Science 0210 nano-technology Spectroscopy Molybdenum disulfide Ultraviolet photoelectron spectroscopy |
| Zdroj: | ACS Applied Materials & Interfaces. 9:5566-5573 |
| ISSN: | 1944-8252 1944-8244 |
| DOI: | 10.1021/acsami.6b14000 |
| Popis: | The molecular orientation of organic semiconductors on a solid surface could be an indispensable factor to determine the electrical performance of organic-based devices. Despite its fundamental prominence, a clear description of the emergent two-dimensional layered material–organic interface is not fully understood yet. In this study, we reveal the molecular alignment and electronic structure of thermally deposited N,N′-dibutyl-3,4,9,10-perylene-dicarboximide (PTCDI-C4) molecules on natural molybdenum disulfide (MoS2) using near-edge X-ray absorption fine structure spectroscopy (NEXAFS). The average tilt angle determination reveals that the anisotropy in the π* symmetry transition of the carbon K-edge (284–288 eV range) is present at the sub-monolayer regime. Supported by ultraviolet photoelectron spectroscopy (UPS), X-ray photoelectron spectroscopy (XPS), and resonant photoemission spectroscopy (RPES) measurements, we find that our spectroscopic measurements indicate a weak charge transfer established at... |
| Databáze: | OpenAIRE |
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