Volume 5, Issue 6 2000720
Full Paper

Synthesis of High-Performance Monolayer Molybdenum Disulfide at Low Temperature

Ji-Hoon Park

Ji-Hoon Park

Department of Electrical Engineering and Computer Science, Massachusetts Institute of Technology, Cambridge, MA, 02139 USA

Research Laboratory of Electronics, Massachusetts Institute of Technology, Cambridge, MA, 02139 USA

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Ang-Yu Lu

Ang-Yu Lu

Department of Electrical Engineering and Computer Science, Massachusetts Institute of Technology, Cambridge, MA, 02139 USA

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Pin-Chun Shen

Pin-Chun Shen

Department of Electrical Engineering and Computer Science, Massachusetts Institute of Technology, Cambridge, MA, 02139 USA

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Bong Gyu Shin

Bong Gyu Shin

Max Planck Institute for Solid State Research, Heisenbergstrasse 1, 70569 Stuttgart, Germany

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Haozhe Wang

Haozhe Wang

Department of Electrical Engineering and Computer Science, Massachusetts Institute of Technology, Cambridge, MA, 02139 USA

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Nannan Mao

Nannan Mao

Department of Electrical Engineering and Computer Science, Massachusetts Institute of Technology, Cambridge, MA, 02139 USA

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Renjing Xu

Renjing Xu

School of Engineering and Applied Sciences, Harvard University, Cambridge, MA, 02138 USA

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Soon Jung Jung

Soon Jung Jung

Max Planck Institute for Solid State Research, Heisenbergstrasse 1, 70569 Stuttgart, Germany

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Donhee Ham

Donhee Ham

School of Engineering and Applied Sciences, Harvard University, Cambridge, MA, 02138 USA

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Klaus Kern

Klaus Kern

Max Planck Institute for Solid State Research, Heisenbergstrasse 1, 70569 Stuttgart, Germany

Institut de Physique, École Polytechnique Fédérale de Lausanne (EPFL), 1015 Lausanne, Switzerland

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Yimo Han

Yimo Han

Department of Materials Science and NanoEngineering, Rice University, Houston, TX, 77005 USA

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Jing Kong

Corresponding Author

Jing Kong

Department of Electrical Engineering and Computer Science, Massachusetts Institute of Technology, Cambridge, MA, 02139 USA

Research Laboratory of Electronics, Massachusetts Institute of Technology, Cambridge, MA, 02139 USA

E-mail: [email protected]

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First published: 19 April 2021
Citations: 17

Abstract

The large-area synthesis of high-quality MoS2 plays an important role in realizing industrial applications of optoelectronics, nanoelectronics, and flexible devices. However, current techniques for chemical vapor deposition (CVD)-grown MoS2 require a high synthetic temperature and a transfer process, which limits its utilization in device fabrications. Here, the direct synthesis of high-quality monolayer MoS2 with the domain size up to 120 µm by metal-organic CVD (MOCVD) at a temperature of 320 °C is reported. Owing to the low-substrate temperature, the MOCVD-grown MoS2 exhibits low impurity doping and nearly unstrained properties on the growth substrate, demonstrating enhanced electronic performance with high electron mobility of 68.3 cm2 V−1 s−1 at room temperature. In addition, by tuning the precursor ratio, a better understanding of the MoS2 growth process via a geometric model of the MoS2 flake shape, is developed, which can provide further guidance for the synthesis of 2D materials.

Conflict of Interest

The authors declare no conflict of interest.

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