GRAVIA - Contiguous graphene ultra-barrier films for flexible electronic applications

GRAVIA - 用于柔性电子应用的连续石墨烯超阻隔薄膜

• 批准号: EP/M507751/1
• 负责人: Stephan Hofmann
• 金额: $ 11.53万
• 依托单位: University of Cambridge
• 依托单位国家: 英国
• 项目类别: Research Grant
• 财政年份: 2015
• 资助国家: 英国
• 起止时间: 2015 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=EP%2FM507751%2F1
• 关键词: GRAVIA; Contiguous; graphene; ultra; barrier

The project will investigate the feasbility of producing very high quality barrier films in MOCON test formats for nextgeneration flexible OLED and plastic logic display applications.These exhibit ultra low water vapour transfer rates (WVTR)of less than 1 X 10-5 g/m2 per day using self healing layers of high quality CVD graphene and Atomic Layer Deposited(ALD) amorphous alumina. The work will explore the neccessary industrial process parameters to ensure the lowest pricepoint at which the minimum barrier properties can be delivered for the chosen high end application. These resultantpolymer supported barrier films will then be benchmarked against existing barrier coatings in WVTR and mechanical flextests. These measurements will also be made traceable by the National Physical Laboratory (NPL) to ensure that the dataclaims are correct and meaningful comparisons can be made. The industrial innovation challenge will be producing thisfully flexible, self-healed (contiguous), optically transparent film of 25cm2 (beyond the current state of art 4cm2) in a timelymanner with very few acceptable defects to ensure ultra-barrier performance. The project will utilise advancedcharacterisation metrologies and quality control analysis to ensure the iterative development of the films and the resultantunderstanding gained from the feasibility studies will be used to model and anticipate future larger film systems and willalso be exploitated where possible by barrier seeking end users and through joint KTN activities to target thesecommunities.

该项目将研究生产用于下一代柔性OLED和塑料逻辑显示应用的MOCON测试格式的非常高质量的阻隔膜的可行性。这些阻隔膜使用高质量CVD石墨烯和原子层沉积（ALD）非晶氧化铝的自修复层，具有每天低于1 X 10-5 g/m2的超低水蒸气传输速率（WVTR）。这项工作将探索必要的工业工艺参数，以确保最低的价格点，在该点上，可以为所选的高端应用提供最低的阻隔性能。然后将这些合成的聚合物支撑的阻隔膜与现有的阻隔涂层在WVTR和机械挠曲测试中进行基准测试。国家物理实验室（NPL）也将对这些测量进行追踪，以确保索赔是正确的，可以进行有意义的比较。工业创新的挑战将是以及时的方式生产这种完全柔性的，自愈合的（连续的），25平方厘米的光学透明薄膜（超过目前的4平方厘米），几乎没有可接受的缺陷，以确保超屏障性能。该项目将利用先进的特性度量和质量控制分析，以确保电影的迭代发展，从可行性研究中获得的结果理解将用于建模和预测未来更大的电影系统，并将在可能的情况下由寻求障碍的最终用户和通过联合KTN活动进行开发，以瞄准这些安全性。

项目成果

Graphene-based nanolaminates as ultra-high permeation barriers

• DOI: 10.1038/s41699-017-0037-z
• 发表时间: 2017-10-23
• 期刊: NPJ 2D MATERIALS AND APPLICATIONS
• 影响因子: 9.7
• 作者: Sagade, Abhay A.;Aria, Adrianus I.;Hofmann, Stephan
• 通讯作者: Hofmann, Stephan

A Peeling Approach for Integrated Manufacturing of Large Monolayer h-BN Crystals.

• DOI: 10.1021/acsnano.8b08712
• 发表时间: 2018-07
• 期刊: ACS nano
• 影响因子: 17.1
• 作者: Ruizhi Wang;D. Purdie;Ye Fan;F. Massabuau;P. Braeuninger-Weimer;Oliver J. Burton;R. Blume;R. Schloegl;A. Lombardo;R. Weatherup;S. Hofmann