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  4. Dry Transfer of CVD Graphene Film Using Adhesion Switchable Ferroelectric Polymers
 
research article

Dry Transfer of CVD Graphene Film Using Adhesion Switchable Ferroelectric Polymers

Zhang, Deqiang
•
Yeo, Jing Ying
•
Zhang, Hanning  
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November 19, 2025
Advanced Materials

Although chemical vapor deposition (CVD) produces meter‐scale, high‐quality graphene (Gr) on copper (Cu) foils, its practical integration is hampered by challenges in the transfer process. Conventional wet transfers are slow, produce chemical waste, and lack scalability, whereas existing dry transfer methods struggle with mechanical damage and residues due to strong Gr‐Cu adhesion and the difficulty in precisely tuning interfacial forces. Here, a fully dry, industrially compatible transfer platform utilizing a ferroelectric poly(vinylidene‐fluoride‐trifluoroethylene) (P(VDF‐TrFE)) film with electrostatically switchable adhesion, serving as both a mechanical support and a transfer layer, is demonstrated. Negative Corona poling of P(VDF‐TrFE) induces p‐type doping in graphene. Density Functional Theory calculations confirm that this simultaneously reduces Gr‐Cu adhesion while increasing P(VDF‐TrFE)‐Gr adhesion, enabling clean, large‐scale graphene delamination from Cu foils with >99% coverage. Subsequent thermal annealing above P(VDF‐TrFE)’s Curie temperature (≈135 °C) depolarizes the film, neutralizing the interfacial charge for a clean release. The versatility of this method is shown for other two‐dimensional (2D) materials, including molybdenum disulfide and hexagonal boron nitride. Crucially, the process has been validated on cm‐scale samples using a fully automated system with a transfer time of <5 min, highlighting a viable path toward industrial‐scale production of high‐quality 2D material films.

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Type
research article
DOI
10.1002/adma.202510545
Author(s)
Zhang, Deqiang
Yeo, Jing Ying
Zhang, Hanning  

École Polytechnique Fédérale de Lausanne

Yamaletdinov, Ruslan  

École Polytechnique Fédérale de Lausanne

Yang, Qian
Zhan, Yufeng
Martin‐Fernandez, Iñigo
Yazyev, Oleg V.  

École Polytechnique Fédérale de Lausanne

Toh, Chee‐Tat
Özyilmaz, Barbaros
Date Issued

2025-11-19

Publisher

Wiley

Published in
Advanced Materials
Article Number

e10545

Editorial or Peer reviewed

REVIEWED

Written at

EPFL

EPFL units
C3MP  
Available on Infoscience
November 20, 2025
Use this identifier to reference this record
https://infoscience.epfl.ch/handle/20.500.14299/256027
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