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Two-dimensional (2D) semiconductors hold a great promise for next-generation electronics. Yet, achieving a clean and intact transfer of 2D films on device-compatible substrates remains a critical challenge. Here, we report an approach that uses selenium (Se) as the intermediate layer to facilitate the transfer of wafer-scale molybdenum disulfide (MoS) monolayers on target substrates with high surface/interface cleanness and structural integrity. Our method enables nearly 100% film intactness of the transferred 2D semiconductors which are free from residues or contaminants. Characterizations reveal that the Se-assisted dry-transfer yields MoS film with superior quality compared to conventional transfer techniques. The fabricated field-effect transistors (FETs) and logic circuits based on these transferred films demonstrate remarkable electrical performance, including on/off current ratios up to 2.7×10 and electron mobility of 71.3 cm·V·s for individual FETs. Our results underscore the feasibility of this dry-transfer technology for fabricating high-performance 2D electronics that are fully compatible with standard semiconductor processes, paving the way for integrating 2D materials into advanced electronic applications.
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http://dx.doi.org/10.1038/s41467-025-59803-1 | DOI Listing |
ACS Appl Mater Interfaces
September 2025
Nanoelectronics Graphene and 2D Materials Laboratory, CITIC-UGR, Department of Electronics, University of Granada, Granada 18014, Spain.
The relentless scaling of semiconductor technology demands materials beyond silicon to sustain performance improvements. Transition metal dichalcogenides (TMDs), particularly MoS, offer excellent electronic properties; however, achieving scalable and CMOS-compatible fabrication remains a critical challenge. Here, we demonstrate a scalable and BEOL-compatible approach for the direct wafer-scale growth of MoS devices using plasma-enhanced atomic layer deposition (PE-ALD) at temperatures below 450 °C, fully compliant with CMOS thermal budgets.
View Article and Find Full Text PDFSmall Methods
August 2025
Songshan Lake Materials Laboratory, Dongguan, Guangdong, 523808, China.
2D transition metal dichalcogenide (TMDs) of monolayer molybdenum diselenide (MoSe) is an emerging semiconductor for next-generation electronics, owing to its remarkable physical and electronic properties. The realization of diverse device applications depends critically on the scalable synthesis of high-quality monolayer MoSe crystals, which remains challenging. In this study, the successful epitaxy of monolayer MoSe films is demonstrated on sapphire substrates at a maximum wafer size of 2 inches via a salt-assisted chemical vapor deposition (SA-CVD) technique.
View Article and Find Full Text PDFNanomaterials (Basel)
August 2025
National Institute of Materials Physics, Atomistilor 405A, 077125 Magurele, Romania.
Integrating two-dimensional transition-metal dichalcogenides with graphene is attractive for low-power memory and neuromorphic hardware, yet sequential wet transfer leaves polymer residues and high contact resistance. We demonstrate a complementary metal-oxide-semiconductor (CMOS)-compatible, transfer-free route in which an atomically thin amorphous MoS precursor is RF-sputtered directly onto chemical vapor-deposited few-layer graphene and crystallized by confined-space sulfurization at 800 °C. Grazing-incidence X-ray reflectivity, Raman spectroscopy, and X-ray photoelectron spectroscopy confirm the formation of residue-free, three-to-four-layer 2H-MoS (roughness: 0.
View Article and Find Full Text PDFACS Appl Mater Interfaces
August 2025
Department of Chemistry, Gachon University, 1342 Seongnam-daero, Sujeong-gu, Seongnam-si, Gyeonggi-do 13120, Republic of Korea.
Two-dimensional (2D) boron-carbon-nitrogen (BCN) nanostructures combine the characteristics of graphene and hexagonal boron nitride (h-BN) and offer outstanding optical and electronic properties. In this study, we directly synthesized high-purity BCN nanoflakes via chemical vapor deposition using nickelocene as a remote floating catalyst, achieving uniform deposition regardless of substrate material or morphology, without contaminating the substrate or film with residual metal catalyst. In the gas phase, the nickelocene catalyst sublimates and decomposes, facilitating the decomposition of the reactant gases and enabling the stable vertical growth of BCN nanoflakes.
View Article and Find Full Text PDFAdv Mater
August 2025
Institute of Physics, Faculty of Electrical Power Systems and Information Technology and SENS Research Center, University of the Bundeswehr Munich, 85577, Neubiberg, Germany.
2D layered materials such as PtSe are prime candidates for next-generation micro- and nano-electro-mechanical systems (MEMS/NEMS), including piezoresistive sensors. However, due to difficulties in large-scale synthesis and the inherent drawbacks associated with mechanical transfer of 2D material films, scalable NEMS production remains challenging. In this work, we report a fabrication route for free-standing, as-grown 2D material channels of PtSe with controlled dimensions, avoiding a mechanical film transfer.
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