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

Min Qian | Zendy; Yun Zhou | Zendy; Yang Gao | Zendy; Jong Bok Park | Zendy; Tao Feng | Zendy; Su Huang | Zendy; Zhuo Sun | Zendy; Lan Jiang | Zendy; Yongfeng Lu | Zendy

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

Author(s) -

Min Qian,

Yun Zhou,

Yang Gao,

Jong Bok Park,

Tao Feng,

Su Huang,

Zhuo Sun,

Lan Jiang,

Yongfeng Lu

Publication year - 2011

Publication title -

applied physics letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.182

H-Index - 442

eISSN - 1077-3118

pISSN - 0003-6951

DOI - 10.1063/1.3584021

Subject(s) - materials science , exfoliation joint , pyrolytic carbon , graphene , graphite , highly oriented pyrolytic graphite , laser , fluence , layer (electronics) , neodymium , substrate (aquarium) , thin film , amorphous solid , amorphous carbon , composite material , nanotechnology , optoelectronics , optics , chemical engineering , crystallography , oceanography , physics , chemistry , pyrolysis , geology , engineering

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. © 2011 American Institute of Physics.

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