High electrical conductivity and oxygen barrier property of polymer-stabilized graphene thin films
High electrical conductivity and oxygen barrier property of polymer-stabilized graphene thin films
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DOI：
10.1016/j.carbon.2017.09.088
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发表时间：
2017-12-01
期刊：
影响因子：
10.9
通讯作者：
Park, O. Ok
中科院分区：
文献类型：
--
作者：
Mun, Sung Cik;Park, Jung Jin;Park, O. Ok
下一代电子产品需要机械灵活性和耐用性以及导电性。在这份报告中，通过一种简单且具有成本效益的逐层技术，将几层石墨烯和聚电解质组装成柔性塑料基底上的石墨烯薄膜。该技术将高导电性和优异的氧气阻隔性集成到单个膜中。这些特性很少报道的其他类型的薄膜制备的溶液处理。的光学性质，膜厚度，和膜的质量精确地控制的双层的数量。在短暂暴露于硝酸（HNO 3）蒸汽后，薄膜表现出更好的导电性，同时保持其其他性能。拉曼、X射线光电子和FT-IR光谱证明HNO 3处理的效果是由于聚合物组分的去除并且仅限于膜表面，而不是由于石墨烯的化学掺杂。(C)2017爱思唯尔有限公司版权所有。
Next-generation electronics require mechanical flexibility and durability as well as electrical conductivity. In this report, few-layer graphene and polyelectrolytes were assembled into ultrathin films on flexible plastic substrates by a simple and cost-effective layer-by-layer technique. This technique integrated high electrical conductivity and excellent oxygen barrier property into a single film. These characteristics have been rarely reported for other types of thin films prepared by solution processing. The optical properties, film thickness, and mass of the films were precisely controlled by the number of bilayers. After a brief exposure to nitric acid (HNO3) vapor, the films exhibited much improved electrical conductivity while preserving their other properties. Raman, x-ray photoelectron, and FT-IR spectroscopy proved that the effects of the HNO3 treatment were due to the removal of polymeric components and restricted to the film surface, and not due to the chemical doping of graphene. (C) 2017 Elsevier Ltd. All rights reserved.