Direct transfer of Wafer-scale graphene films

Research output: Contribution to journalArticleScientificpeer-review

Researchers

Research units

  • VTT MIKES Metrology

Abstract

Flexible electronics serve as the ubiquitous platform for the next-generation life science, environmental monitoring, display, and energy conversion applications. Outstanding multifunctional mechanical, thermal, electrical, and chemical properties of graphene combined with transparency and flexibility solidifies it as ideal for these applications. Although chemical vapor deposition (CVD) enables cost-effective fabrication of high-quality large-area graphene films, one critical bottleneck is an efficient and reproducible transfer of graphene to flexible substrates. We explore and describe a direct transfer method of 6-inch monolayer CVD graphene onto transparent and flexible substrate based on direct vapor phase deposition of conformal parylene on as-grown graphene/copper (Cu) film. The method is straightforward, scalable, cost-effective and reproducible. The transferred film showed high uniformity, lack of mechanical defects and sheet resistance for doped graphene as low as 18 Ω/sq and 96.5% transparency at 550 nm while withstanding high strain. To underline that the introduced technique is capable of delivering graphene films for next-generation flexible applications we demonstrate a wearable capacitive controller, a heater, and a self-powered triboelectric sensor.

Details

Original languageEnglish
Article number035004
Number of pages10
Journal2 D Materials
Volume4
Issue number3
Publication statusPublished - 1 Sep 2017
MoE publication typeA1 Journal article-refereed

    Research areas

  • Electrical conductivity, Flexible electronics, Graphene, Parylene-C, Transparency, Two-dimensional material

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ID: 15308329