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拉曼光谱法表征石墨烯晶界
Authors
应豪
李秀婷
陈珊珊
Publication date
1 January 2017
Publisher
Abstract
化学气相沉积法制备的石墨烯为多晶,其晶界缺陷对石墨烯的电学、热学等各性能有显著影响.快速、有效地观察石墨烯的晶界分布对石墨烯的应用研究有重要意义.对石墨烯进行热处理以增强石墨烯的缺陷,发现热处理后石墨烯边界和晶界处的拉曼缺陷峰有明显增强,而晶畴内石墨烯的缺陷峰基本没有变化.为此,应用热处理法并结合拉曼光谱及其面扫描技术,可直观地表征出满层石墨烯的晶界分布并测定单晶尺寸.该方法不限制石墨烯样品的衬底,可以快速有效地鉴别出石墨烯晶界分布,为石墨烯晶粒尺寸的判断提供了一种简单有效的方法.福建省自然科学基金科技项目“大面积石墨烯/六方氮化硼异质薄膜的制备及器件研究”(2015J06016
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Last time updated on 10/06/2020