Epitaxial growth technique for creating large-area, high-quality 2D molybdenum disulfide semiconductors

https://phys.org/news/2025-12-growth-strategy-enables-coherent-quantum.html

"crystalline defects typically arise (coalescence) when small crystal regions (grains) merge... overcome combining epitaxial growth with precise control of coalescence kinetics on vicinal sapphire substrates yielding single-crystal molybdenum disulfide channels with minimal defects... exhibits coherent transport at low temperatures/ high 1,200 cm2 V−1 s−1 Hall mobility... used to fabricate arrays of field-effect transistors: 100 cm2 V−1 s−1 average mobility, 65 mV dec−1 minimum subthreshold swing at room temperature"