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Park, Kibog
Emergent Materials & Devices Lab
Research Interests
  • Semiconductor, Metal Oxide Thin Film, Graphene, Non-Volatile Memory, Quantum Transport, Quantum Computing Device

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Monolithic graphene oxide sheets with controllable composition

Cited 6 times inthomson ciCited 3 times inthomson ci
Title
Monolithic graphene oxide sheets with controllable composition
Author
Chu, Jae HwanKwak, JinsungKim, Sung-DaeLee, Mi JinKim, Jong JinPark, Soon-DongChoi, Jae-KyungRyu, Gyeong HeePark, KibogKim, Sung YoubKim, Ji HyunLee, ZonghoonKim, Young-WoonKwon, Soon-Yong
Issue Date
2014-02
Publisher
NATURE PUBLISHING GROUP
Citation
NATURE COMMUNICATIONS, v.5, pp.3383
Abstract
Graphene oxide potentially has multiple applications and is typically prepared by solution-based chemical means. To date, the synthesis of a monolithic form of graphene oxide that is crucial to the precision assembly of graphene-based devices has not been achieved. Here we report the physical approach to produce monolithic graphene oxide sheets on copper foil using solid carbon, with tunable oxygen-to-carbon composition. Experimental and theoretical studies show that the copper foil provides an effective pathway for carbon diffusion, trapping the oxygen species dissolved in copper and enabling the formation of monolithic graphene oxide sheets. Unlike chemically derived graphene oxide, the as-synthesized graphene oxide sheets are electrically active, and the oxygen-to-carbon composition can be tuned during the synthesis process. As a result, the resulting graphene oxide sheets exhibit tunable bandgap energy and electronic properties. Our solution-free, physical approach may provide a path to a new class of monolithic, two-dimensional chemically modified carbon sheets.
URI
https://scholarworks.unist.ac.kr/handle/201301/10052
URL
https://www.nature.com/articles/ncomms4383
DOI
10.1038/ncomms4383
ISSN
2041-1723
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