DataVXChemistry of MaterialsPaper
journal article·2026-07-14

Direct Growth of Wafer-Scale Epitaxially Aligned Single-Crystal Two-Dimensional Transition Metal Dichalcogenide in Confined Arrays

Jun Wang, Yuyin Li, Md Saif Hasan, Yunxia Hu, Zongyuan Xin, Hancheng Ma, Kenan Zhang, Tsz Wing Tang, Beichao Shi, Zhihuan Huang, Hao Liu, Jiawen You, Yao Ding, Zhengtang Luo

Chemistry of Materials· Volume 38· Issue 13
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Source abstract

Abstract

Scalable growth of single-crystal transition metal dichalcogenides (TMDs) across wafer-scale substrates remains a critical challenge hindering their practical adoption in next-generation electronics. We developed a direct growth in confined pixel cells for synthesizing aligned wafer-scale, single-crystal 2H-MoTe 2 arrays en route to mass production. By regulating pixel cell dimensions to control the nucleation process, we demonstrate the successful achievement of single nucleation in the individual pixel cell, leading to a single-crystal 2H-MoTe 2 patterned array. We validate that this synthesis strategy can be extended to other pattern geometries, as well as on other substrates, including amorphous SiO 2, crystalline silicon, and sapphire. Fabricated field-effect transistor (FET) and photodetector arrays display a carrier mobility of 43 ± 5 cm 2 V –1 s –1 and a responsivity of 31 ± 6 mA W –1, evidencing exceptional electrical and optoelectronic uniformity. Our approach establishes a pathway for semiconductor chemistry that leads to the industrial application of TMD materials.
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Research context

Electronic materials

OpenAlex topics: 2D Materials and Applications · Advanced Thermoelectric Materials and Devices · Phase-change materials and chalcogenides

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

Affiliations

Department of Chemical and Biological Engineering, Guangdong-Hong Kong-Macao Joint Laboratory for Intelligent Micro-Nano Optoelectronic Technology, William Mong Institute of Nano Science and Technology and Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction

The Hong Kong University of Science and Technology

Key Laboratory of Mechanism Theory and Equipment Design of Ministry of Education, School of Mechanical Engineering

Tianjin University

The Key Laboratory of Biomedical Information Engineering of Ministry of Education, School of Life Science and Technology

Xi’an Jiaotong University

Institute of Molecular Engineering Plus, College of Chemistry

Fuzhou University

School of Materials Science and Engineering

Wuhan University of Technology

Funding

Research Grants Council, University Grants Committee · European Commission · HORIZON EUROPE Marie Sklodowska-Curie Actions · Innovation and Technology Commission · Science and Technological Bureau of Guangzhou Huangpu District

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