journal article·2020-06-23

High-Fidelity Transfer of Chemical Vapor Deposition Grown 2D Transition Metal Dichalcogenides via Substrate Decoupling and Polymer/Small Molecule Composite

Peijian Wang, Shupeng Song, Arman Najafi, Chang Huai, Peihong Zhang, Yanglong Hou, Shaoming Huang, Hao Zeng

ACS Nano· Volume 14· Issue 6
Publisher page

Abstract

Current polymeric transfer methods of 2D materials often bring about the presence of wrinkles, cracks, and polymer residue, limiting the quality of the transferred materials and performance of devices. Herein, we report a transfer approach combining pretreatment by liquid nitrogen and lithium ion intercalation with polymer composite of small molecules and polystyrene to achieve high-fidelity transfer of 2D transition metal dichalcogenides (TMDs) grown by chemical vapor deposition. In this method, the as-grown samples were pretreated by liquid nitrogen and lithium ion intercalation to weaken the bonding between the TMD and the substrate. A polymer composite incorporating small molecules, namely camphor or naphthalene, was used to increase the dissolution of the polymer film. These two processes work synergistically to enable nearly 100% transfer of monolayer TMDs virtually free of wrinkles, cracks, or organic residue with retained optical properties. Our technique can be generalized for the efficient and high quality transfer of other 2D materials.
Source: openalex_inverted_index · Quality: baseline

Research context

OpenAlex topics: 2D Materials and Applications · Perovskite Materials and Applications · Advanced Sensor and Energy Harvesting Materials

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

Affiliations

School of Materials and Energy, Guangzhou Key Laboratory of Low-Dimensional Materials and Energy Storage Devices, Guangdong University of Technology, Guangzhou Higher Education Mega Center, Panyu District, Guangzhou 510006, People’s Republic of China

Department of Physics, SUNY-Buffalo, Buffalo, New York 14260, United States

State Key Laboratory of Refractories and Metallurgy, Wuhan University of Science and Technology, Wuhan 430081, People’s Republic of China

Beijing Key Laboratory for Magnetoelectric Materials and Devices (BKL-MMD), Beijing Innovation Center for Engineering Science and Advanced Technology (BIC-ESAT), College of Engineering, Department of Materials Science and Engineering, Peking University, Beijing 100871, People’s Republic of China

Funding

Ministry of Science and Technology of the People's Republic of China · Division of Chemical, Bioengineering, Environmental, and Transport Systems · National Natural Science Foundation of China · Division of Materials Research

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