拉曼光谱法表征石墨烯晶界

曲靖师范学院学报 ›› 2017, Vol. 36 ›› Issue (6): 18-23.

拉曼光谱法表征石墨烯晶界

李秀婷,应豪,陈珊珊

厦门大学物理科学与技术学院,福建厦门 361005

收稿日期:2017-03-23 出版日期:2017-12-10
作者简介:李秀婷,厦门大学物理科学与技术学院研究生,主要从事二维纳米材料制备和表征研究
基金资助:
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).

Characterization of Grain Boundaries in Graphene by Raman Spectroscopy

Li Xiuting, Ying Hao, Chen Shanshan

College of Physical Science and Technology, Xiamen University, Xiamen Fujian, 361005, China

Received:2017-03-23 Published:2017-12-10

摘要/Abstract

摘要： 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.

关键词: 石墨烯, 拉曼光谱, 晶界, 缺陷, 化学气相沉积

Abstract: The graphene films prepared by chemical vapor deposition are typically polycrystalline, and the grain boundaries are expected to degrade the electrical and thermal properties of the resulting films. The study of graphene grains and their boundary is therefore critical for enabling diverse applications. In this work, thermal treatment has been applied to introduce defects on the transferred graphene films. It is found that the intensity of Raman D peak at the edge of graphene and the grain boundary are significantly enhanced after heat treatment in air, whereas no change was found in D peak within the graphene grain. Therefore, the grain boundary distribution of the graphene films can be characterized by thermal treatment combined with Raman spectroscopy-scanning technique, which provides a rapid and effective method to identify the graphene grains on arbitrary substrates.

Key words: graphene, Raman spectrum, grain boundary, defects, CVD

中图分类号:

O484.1

李秀婷,应豪,陈珊珊. 拉曼光谱法表征石墨烯晶界[J]. 曲靖师范学院学报, 2017, 36(6): 18-23.

Li Xiuting, Ying Hao, Chen Shanshan. Characterization of Grain Boundaries in Graphene by Raman Spectroscopy[J]. JOURNAL OF QUJING NORMAL UNIVERSITY, 2017, 36(6): 18-23.

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