journal article·2023-06-13

Interfacial Reconstructed Layer Controls the Orientation of Monolayer Transition-Metal Dichalcogenides

Areej Aljarb, Jiacheng Min, Mariam Hakami, Jui-Han Fu, Rehab Albaridy, Yi Wan, Sergei Lopatin, Dimitrios Kaltsas, Dipti Naphade, Emre Yengel, Mohamed Nejib Hedhili, Roaa Sait, Abdul-Hamid Emwas, Arwa Kutbee, Merfat Alsabban, Kuo-Wei Huang, Kaimin Shih, Leonidas Tsetseris, Thomas D. Anthopoulos, Vincent Tung, Lain-Jong Li

ACS Nano· Volume 17· Issue 11
Publisher page

Abstract

Growing continuous monolayer films of transition-metal dichalcogenides (TMDs) without the disruption of grain boundaries is essential to realize the full potential of these materials for future electronics and optoelectronics, but it remains a formidable challenge. It is generally believed that controlling the TMDs orientations on epitaxial substrates stems from matching the atomic registry, symmetry, and penetrable van der Waals forces. Interfacial reconstruction within the exceedingly narrow substrate-epilayer gap has been anticipated. However, its role in the growth mechanism has not been intensively investigated. Here, we report the experimental conformation of an interfacial reconstructed (IR) layer within the substrate-epilayer gap. Such an IR layer profoundly impacts the orientations of nucleating TMDs domains and, thus, affects the materials' properties. These findings provide deeper insights into the buried interface that could have profound implications for the development of TMD-based electronics and optoelectronics.
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Research context

OpenAlex topics: 2D Materials and Applications · ZnO doping and properties · Perovskite Materials and Applications

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Department of Physics, King Abdulaziz University, Jeddah 21589, Kingdom of Saudi Arabia

Physical Sciences and Engineering Division, King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Kingdom of Saudi Arabia

Department of Civil Engineering, The University of Hong Kong, Pokfulam road, Hong Kong, China

Department of Mechanical Engineering, The University of Hong Kong, Pokfulam road, Hong Kong, China

Department of Chemical System Engineering, School of Engineering, The University of Tokyo, Tokyo 113-8656, Japan

Department of Physics and Astronomy, King Saud University, Riyadh 11451−2455, Kingdom of Saudi Arabia

Core Laboratories, King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Kingdom of Saudi Arabia

Department of Physics, School of Applied Mathematical and Physical Sciences, National Technical University of Athens, Athens GR-15780 Greece

Department of Chemistry, University of Jeddah, Jeddah 21959, Kingdom of Saudi Arabia

KAUST Catalysis Center, King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Kingdom of Saudi Arabia

Funding

University of Hong Kong · Hong Kong Jockey Club

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