期刊
CARBON
卷 47, 期 1, 页码 145-152出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.carbon.2008.09.045
关键词
-
资金
- DARPA iMINT
- SWAN-NRI
- ONR
- 12CAM NSF [DMR0645461]
Several nanometer-thick graphene oxide films deposited on silicon nitride-on silicon substrates were exposed to nine different heat treatments (three in Argon, three in Argon and Hydrogen, and three in ultra-high vacuum), and also a film was held at 70 degrees C while being exposed to a vapor from hydrazine monohydrate. The films were characterized with atomic force microscopy to obtain local thickness and variation in thickness over extended regions. X-ray photoelectron spectroscopy was used to measure significant reduction of the oxygen content of the films; heating in ultra-high vacuum was particularly effective. The overtone region of the Raman spectrum was used, for the first time, to provide a fingerprint of changing oxygen content. (C) 2008 Elsevier Ltd. All rights reserved.
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