Eight In. Wafer-Scale Epitaxial Monolayer MoS 2 .

Large-scale, high-quality, and uniform monolayer molybdenum disulfide (MoS ₂ ) films are crucial for their applications in next-generation electronics and optoelectronics. Epitaxy is a mainstream technique for achieving high-quality MoS ₂ films and is demonstrated at a wafer scale up to 4-in. In this study, the epitaxial growth of 8-in. wafer-scale highly oriented monolayer MoS ₂ on sapphire is reported as with excellent spatial homogeneity, using a specially designed vertical chemical vapor deposition (VCVD) system. Field effect transistors (FETs) based on the as-grown 8-in. wafer-scale monolayer MoS ₂ film are fabricated and exhibit high performances, with an average mobility and an on/off ratio of 53.5 cm ² V ^-1 s ^-1 and 10 ⁷ , respectively. In addition, batch fabrication of logic devices and 11-stage ring oscillators are also demonstrated, showcasing excellent electrical functions. This work may pave the way of MoS ₂ in practical industry-scale applications.
(© 2024 The Authors. Advanced Materials published by Wiley‐VCH GmbH.)