Affiliation:
1. School of Materials Science and Engineering Peking University Beijing 100871 P. R. China
2. Center for Nanochemistry Academy for Advanced Interdisciplinary Studies Peking University Beijing 100871 P. R. China
3. Electron Microscopy Laboratory, and International Center for Quantum Materials School of Physics Peking University Beijing 100871 P. R. China
4. Key Laboratory for the Physics and Chemistry of Nanodevices School of Electronics Peking University Beijing 100871 P. R. China
Abstract
Abstract2D semiconducting transition‐metal dichalcogenides (TMDs) have attracted considerable attention as channel materials for next‐generation transistors. To meet the industry needs, large‐scale production of single‐crystal monolayer TMDs in highly reproducible and energy‐efficient manner is critically significant. Herein, it is reported that the high‐reproducible, high‐efficient epitaxial growth of wafer‐scale monolayer MoS2 single crystals on the industry‐compatible sapphire substrates, by virtue of a deliberately designed “face‐to‐face” metal‐foil‐based precursor supply route, carbon‐cloth‐filter based precursor concentration decay strategy, and the precise optimization of the chalcogenides and metal precursor ratio (i.e., S/Mo ratio). This unique growth design can concurrently guarantee the uniform release, short‐distance transport, and moderate deposition of metal precursor on a wafer‐scale substrate, affording high‐efficient and high‐reproducible growth of wafer‐scale single crystals (over two inches, six times faster than usual). Moreover, the S/Mo precursor ratio is found as a key factor for the epitaxial growth of MoS2 single crystals with rather high crystal quality, as convinced by the relatively high electronic performances of related devices. This work demonstrates a reliable route for the batch production of wafer‐scale single‐crystal 2D materials, thus propelling their practical applications in highly integrated high‐performance nanoelectronics and optoelectronics.
Funder
National Key Research and Development Program of China
National Natural Science Foundation of China
Subject
General Materials Science,General Chemistry
Cited by
8 articles.
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