Please use this identifier to cite or link to this item: https://doi.org/10.1021/acsnano.5b07314
Title: Heterointerface Screening Effects between Organic Monolayers and Monolayer Transition Metal Dichalcogenides
Authors: Zheng, Yu Jie 
Huang, Yu Li 
Chen, Yifeng 
Zhao, Weijie 
Eda, Goki 
Spataru, Catalin D
Zhang, Wenjing 
Chang, Yung-Huang 
Li, Lain-Jong
Chi, Dongzhi
Quek, Su Ying 
Wee, Andrew Thye Shen 
Keywords: Science & Technology
Physical Sciences
Technology
Chemistry, Multidisciplinary
Chemistry, Physical
Nanoscience & Nanotechnology
Materials Science, Multidisciplinary
Chemistry
Science & Technology - Other Topics
Materials Science
Two-dimensional transition metal dichalcogenides
Organic-inorganic interface
Screening effects
Energy level alignment
Scanning tunneling microscopy/spectroscopy
First principle calculations
TOTAL-ENERGY CALCULATIONS
QUASI-PARTICLE ENERGIES
MOLECULE
PTCDA
MOS2
1ST-PRINCIPLES
SEMICONDUCTORS
ABSORPTION
ALIGNMENT
EPITAXY
Issue Date: 1-Feb-2016
Publisher: AMERICAN CHEMICAL SOCIETY
Citation: Zheng, Yu Jie, Huang, Yu Li, Chen, Yifeng, Zhao, Weijie, Eda, Goki, Spataru, Catalin D, Zhang, Wenjing, Chang, Yung-Huang, Li, Lain-Jong, Chi, Dongzhi, Quek, Su Ying, Wee, Andrew Thye Shen (2016-02-01). Heterointerface Screening Effects between Organic Monolayers and Monolayer Transition Metal Dichalcogenides. ACS NANO 10 (2) : 2476-2484. ScholarBank@NUS Repository. https://doi.org/10.1021/acsnano.5b07314
Abstract: © 2016 American Chemical Society. The nature and extent of electronic screening at heterointerfaces and their consequences on energy level alignment are of profound importance in numerous applications, such as solar cells, electronics etc. The increasing availability of two-dimensional (2D) transition metal dichalcogenides (TMDs) brings additional opportunities for them to be used as interlayers in "van der Waals (vdW) heterostructures" and organic/inorganic flexible devices. These innovations raise the question of the extent to which the 2D TMDs participate actively in dielectric screening at the interface. Here we study perylene-3,4,9,10-tetracarboxylic dianhydride (PTCDA) monolayers adsorbed on single-layer tungsten diselenide (WSe2), bare graphite, and Au(111) surfaces, revealing a strong dependence of the PTCDA HOMO-LUMO gap on the electronic screening effects from the substrate. The monolayer WSe2 interlayer provides substantial, but not complete, screening at the organic/inorganic interface. Our results lay a foundation for the exploitation of the complex interfacial properties of hybrid systems based on TMD materials.
Source Title: ACS NANO
URI: https://scholarbank.nus.edu.sg/handle/10635/170914
ISSN: 19360851
1936086X
DOI: 10.1021/acsnano.5b07314
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