Gas phase controlled deposition of high quality large-area graphene films.
نویسندگان
چکیده
A gas phase controlled graphene synthesis resembling a CVD process that does not critically depend on cooling rates is reported. The controllable catalytic CVD permits high quality large-area graphene formation with deft control over the thickness from monolayers to thick graphitic structures at temperatures as low as 750 degrees C.
منابع مشابه
Layer-by-layer synthesis of large-area graphene films by thermal cracker enhanced gas source molecular beam epitaxy
A thermal cracker enhanced gas source molecular beam epitaxy system was used to synthesize large-area graphene. Hydrocarbon gas molecules were broken by thermal cracker at very high temperature of 1200 C and then impinged on a nickel substrate. High-quality, large-area graphene films were achieved at 800 C, and this was confirmed by both Raman spectroscopy and transmission electron microscopy. ...
متن کاملProposal for the Undergraduate Research Award Title of the Activity : Controlled Growth of Graphene by Chemical Vapor Deposition
Graphene, firstly isolated in 2004, is a new type of carbon materials, which contains a singleor few-layered sheet of Sp2-bonded carbon atoms. This special atomic structure gives graphene rich physical properties and wide potential applications. It has excellent electrical, mechanical, thermal and optical properties and has wide applications in nanoeletronic devices, transparent conductive film...
متن کاملChemical vapor deposition of N-doped graphene and carbon films: the role of precursors and gas phase.
Thermally induced chemical vapor deposition (CVD) was used to study the formation of nitrogen-doped graphene and carbon films on copper from aliphatic nitrogen-containing precursors consisting of C1- and C2-units and (hetero)aromatic nitrogen-containing ring systems. The structure and quality of the resulting films were correlated to the influence of the functional groups of the precursor molec...
متن کاملSynthesis of Large Area Graphene for High Performance in Flexible Optoelectronic Devices
This work demonstrates an attractive low-cost route to obtain large area and high-quality graphene films by using the ultra-smooth copper foils which are typically used as the negative electrodes in lithium-ion batteries. We first compared the electronic transport properties of our new graphene film with the one synthesized by using commonly used standard copper foils in chemical vapor depositi...
متن کاملCobalt-assisted large-area epitaxial graphene growth in thermal cracker enhanced gas source molecular beam epitaxy
Large-area epitaxial graphene films were grown on cobalt by thermal cracker enhanced gas source molecular beam epitaxy. Growth conditions including growth temperature and growth time play important roles in the resulting morphology of as-grown films. High-quality graphene films can be achieved in a small growth window. Fast cooling rate was not required in this process due to direct growth mech...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید
ثبت ناماگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید
ورودعنوان ژورنال:
- Chemical communications
دوره 46 9 شماره
صفحات -
تاریخ انتشار 2010