Formation of graphene sheets through laser exfoliation of highly ordered pyrolytic graphite

Min Qian, Yun Shen Zhou, Yang Gao, Jong Bok Park, Tao Feng, Su Mei Huang, Zhuo Sun, Lan Jiang, Yong Feng Lu

Research output: Contribution to journalArticle

75 Scopus citations

Abstract

Freestanding two-dimensional (2D) few-layer graphene was formed through laser exfoliation of highly ordered pyrolytic graphite, using a pulsed neodymium-doped yttrium aluminum garnet (Nd:YAG) laser. Graphene sheets of several nanometers in thickness and micrometers in size were obtained. The laser exfoliation process was investigated at different laser fluences and distances between target and substrate. Three different phases, amorphous carbon, few-layer graphene sheets, and thin graphite films, were obtained as the laser fluence increased. This study reveals an existing route of forming freestanding 2D nanostructures through laser exfoliation.

Original languageEnglish (US)
Article number173108
JournalApplied Physics Letters
Volume98
Issue number17
DOIs
StatePublished - Apr 25 2011

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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    Qian, M., Zhou, Y. S., Gao, Y., Park, J. B., Feng, T., Huang, S. M., Sun, Z., Jiang, L., & Lu, Y. F. (2011). Formation of graphene sheets through laser exfoliation of highly ordered pyrolytic graphite. Applied Physics Letters, 98(17), [173108]. https://doi.org/10.1063/1.3584021