Projects per year
Abstract
Van der Waals heterostructures are the fundamental building blocks of electronic and optoelectronic devices. Here we report that, through a single-step chemical vapour deposition (CVD) process, high-quality vertical bilayer MoS2/WS2 heterostructures with a grain size up to ∼60 μm can be synthesized from molten salt precursors, Na2MoO4 and Na2WO4. Instead of normal pyramid vertical heterostructures grown by CVD, this method synthesizes an anti-pyramid MoS2/WS2 structure, which is characterized by Raman, photoluminescence and second harmonic generation microscopy. Our facile CVD strategy for synthesizing anti-pyramid structures unveils a new synthesis route for the products of two-dimensional heterostructures and their devices for application.
Original language | English |
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Pages (from-to) | 4537-4542 |
Number of pages | 6 |
Journal | Nanoscale |
Volume | 13 |
Issue number | 8 |
DOIs | |
Publication status | Published - 28 Feb 2021 |
MoE publication type | A1 Journal article-refereed |
Fingerprint Dive into the research topics of 'Single-step chemical vapour deposition of anti-pyramid MoS<sub>2</sub>/WS<sub>2</sub>vertical heterostructures'. Together they form a unique fingerprint.
Projects
- 6 Active
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Ultrafast Data Production with Broadband Photodetectors for Active Hyperspectral Space Imaging
01/01/2021 → 31/12/2023
Project: Academy of Finland: Other research funding
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NOIMO: Novel optical isolators to continue Moore's law in photonics integration
01/09/2020 → 31/08/2024
Project: Academy of Finland: Other research funding
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ATOP: Atomically-engineered nonlinear photonics with two-dimensional layered material superlattices
Sun, Z., Wang, Y., Pelgrin, V., Dai, Y. & Wang, Y.
01/09/2019 → 31/08/2024
Project: EU: ERC grants
Equipment
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OtaNano - Nanofab
Päivikki Repo (Manager)
School of Electrical EngineeringFacility/equipment: Facility
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OtaNano - Nanomicroscopy Center
Jani Seitsonen (Manager)
Department of Applied PhysicsFacility/equipment: Facility