Poly(vinyl alcohol)-Assisted Exfoliation of van der Waals Materials

Yaodong Li; Shirui Weng; Rui Niu; Weili Zhen; Feng Xu; Wenka Zhu; Changjin Zhang

doi:10.1021/acsomega.2c04409

Poly(vinyl alcohol)-Assisted Exfoliation of van der Waals Materials

ACS Omega. 2022 Oct 18;7(43):38774-38781. doi: 10.1021/acsomega.2c04409. eCollection 2022 Nov 1.

Authors

Yaodong Li^{1

2}, Shirui Weng¹, Rui Niu¹, Weili Zhen¹, Feng Xu¹, Wenka Zhu¹, Changjin Zhang^{1

3}

Affiliations

¹ High Magnetic Field Laboratory of Anhui Province, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei230031, China.
² University of Science and Technology of China, Hefei230026, China.
³ Institutes of Physical Science and Information Technology, Anhui University, Hefei230601, China.

Abstract

We report a highly efficient and easily transferable poly(vinyl alcohol) (PVA)-assisted exfoliation method, which allows one to obtain van der Waals materials on large scales, e.g., centimeter-scale graphite flakes and hundred-micrometer-scale several layers of ZnIn₂S₄ and BN. The present exfoliation scheme is nondestructive, and the materials prepared by PVA-assisted exfoliation can be directly fabricated into devices. This exfoliation approach could be helpful in overcoming the preparation bottleneck for large-scale applications of two-dimensional (2D) materials.