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On the Role of Vapor Trapping for Chemical Vapor Deposition (CVD) Grown Graphene over Copper
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Mark H Rümmeli, Sandeep Gorantla, Alicja Bachmatiuk, Johannes Phieler, Nicole Geißler, Imad Ibrahim, Jinbo Pang, Jürgen Eckert
·¢±íÈÕÆÚ
2013/12/10
ÆÚ¿¯
Chemistry of Materials
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25
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24
Ò³Â뷶Χ
4861-4866
³ö°æÉÌ
American Chemical Society
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The role of sample chamber configuration for the chemical vapor deposition of graphene
over copper was investigated in detail. A configuration in which the gas flow is unrestricted
was shown to lead to graphene with an inhomogeneous number of layers (between 1 and
3). An alternative configuration in which one end of the inner tube (in which the sample is
placed) is closed so as to restrict the gas flow leads a homogeneous graphene layer
number. Depending on the sample placement, either homogeneous monolayer or bilayer
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Oxidation as a Means to Remove Surface Contaminants on Cu Foil Prior to Graphene Growth by Chemical Vapor Deposition
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Jinbo Pang, Alicja Bachmatiuk, Lei Fu, Chenglin Yan, Mengqi Zeng, Jiao Wang, Barbara Trzebicka, Thomas Gemming, J¨¹rgen Eckert, Mark H R¨¹mmeli
·¢±íÈÕÆÚ
2015/5/20
ÆÚ¿¯
The Journal of Physical Chemistry C
³ö°æÉÌ
American Chemical Society
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One of the more common routes to fabricate graphene is by chemical vapor deposition
(CVD). This is primarily because of its potential to scale up the process and produce large
area graphene. For the synthesis of large area monolayer Cu is probably the most popular
substrate since it has a low carbon solubility enabling homogenous single-layer sheets of
graphene to form. This process requires a very clean substrate. In this work we look at the
efficiency of common pre-treatments such as etching or wiping with solvents and compare

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Direct synthesis of graphene from adsorbed organic solvent molecules over copper
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Jinbo Pang, Alicja Bachmatiuk, Lei Fu, Rafael G Mendes, Marcin Libera, Daniela Placha, Grazyna Simha Martynkov¨¢, Barbara Trzebicka, Thomas Gemming, Juergen Eckert, Mark H R¨¹mmeli
·¢±íÈÕÆÚ
2015
ÆÚ¿¯
RSC Advances
¾íºÅ
5
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75
Ò³Â뷶Χ
60884-60891
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Royal Society of Chemistry
¼ò½é
The isolation of graphene by Novoselov et al in 20041 ignited massive interest in this
material. For graphene to succeed fully as a future material its controlled fabrication is
required. While numerous routes have been and are being developed, chemical vapor
deposition (CVD) is by far the most common approa
Novoselov ÔÚ2004ÄêÊ׶ȷÖÀë³öµÄʯīϩ£¬Òý±¬ÁËÈ«Çò¿ÆÑÐÈËÔ±¾Þ´óµÄÐËȤ¡£Ê¯Ä«Ï©×÷ΪδÀ´²ÄÁÏÒªÏë³É¹¦£¬±ØÐëÒª´ïµ½¿É¿ØÖƱ¸¡£Ä¿Ç°£¬¶àÖÖ¹¤ÒÕ·Ïß±»ÈËÃÇ·¢Õ¹ÀûÓ㬻¯Ñ§ÆøÏà³Á»ý·¨ÊǶÀÊ÷Ò»ÖÄ£¬³ÉΪ×î³£¼ûµÄÆÕ±é²ÉÓõķ½·¨¡£ÈËÃÇÒ²ÖÂÁ¦ÓÚÀûÓûùµ×Îü¸½µÄÓлú·Ö×ÓÀ´Ö±½ÓÖƱ¸Ê¯Ä«Ï©¡£ÔÚÕâ·½Ã棬¼«ÉÙÑо¿µÃµ½±¨µÀ£¨»òÕß²½Öè·±¸´»òÕßʯīϩ³ß´ç¼«Ð¡£©¡£±¾¹¤×÷±¨µÀÁËÒ»ÖÖ¼«Æä¼òÒ׵ŤÒÕ¡£Ò༴£¬Í­»ùµ×±íÃæÎü¸½Óлú·Ö×Ó£¬È»ºóÔÚÇâÆø·ÕΧÏÂÈÈÍ˻𣬼´Íê³Éʯīϩµº×´½á¹¹µÄÖƱ¸¡£±¾¼òÒ×·½·¨µÃµ½ÁËϵͳµÄÑо¿¡£±¾Ñо¿Ç¿µ÷Á˻Çâ»ùÍŶԷ´Ó¦µÄÖØÒªÐÔ¡£±¾ÎÄÒ²¼ÓÉîÁËÇâÆøÔÚ´«Í³CVD·¨£¨ÀûÓÃ̼Դ½øÁÏÆøÌåÖƱ¸Ê¯Ä«Ï©£©µÄÀí½â¡£
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CVD growth of 1D and 2D sp2 carbon nanomaterials
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Jinbo Pang, Alicja Bachmatiuk, Imad Ibrahim, Lei Fu, Daniela Placha, Grazyna Simha Martynkova, Barbara Trzebicka, Thomas Gemming, Juergen Eckert, Mark H R¨¹mmeli
·¢±íÈÕÆÚ
2015
ÆÚ¿¯
Journal of Materials Science
Ò³Â뷶Χ
1-28
³ö°æÉÌ
Springer US
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Abstract The discovery of graphene and carbon nanotubes (rolled-up graphene) has excited
the world because their extraordinary properties promise tremendous developments in
many areas. Like any materials with application potential, it needs to be fabricated in an
economically viable manner and at the same time provides the necessary quality for
relevant applications. Graphene and carbon nanotubes are no exception to this. In both
cases, chemical vapor deposition (CVD) has emerged as the dominant synthesis route
£¨ÎÄÕÂ5£©ÕôÆûÏÝ»ñÖƱ¸»¨°ê״ʯīϩ
Vapor Trapping Growth of Single-Crystalline Graphene Flowers: Synthesis, Morphology, and Electronic Properties
Yi Zhang†‡, Luyao Zhang†¡ì, Pyojae Kim†, Mingyuan Ge¡ì, Zhen Li†, and Chongwu Zhou*†‡¡ì
Nano Lett., 2012, 12 (6), pp 2810¨C2816
We report a vapor trapping method for the growth of large-grain, single-crystalline graphene flowers with grain size up to 100 ¦Ìm. Controlled growth of graphene flowers with four lobes and six lobes has been achieved by varying the growth pressure and the methane to hydrogen ratio. Surprisingly, electron backscatter diffraction study revealed that the graphene morphology had little correlation with the crystalline orientation of underlying copper substrate. Field effect transistors were fabricated based on graphene flowers and the fitted device mobility could achieve ¡«4200 cm2 V¨C1 s¨C1 on Si/SiO2 and ¡«20 000 cm2 V¨C1 s¨C1 on hexagonal boron nitride (h-BN). Our vapor trapping method provides a viable way for large-grain single-crystalline graphene synthesis for potential high-performance graphene-based electronics.
£¨ÎÄÕÂ6£© £¨ÏÝ»ñ×÷Óõģ©Í­¡°¿Ú´ü¡±ÖƱ¸µ¥¾§»¨°ê״ʯīϩ
Large-Area Graphene Single Crystals Grown by Low-Pressure Chemical Vapor Deposition of Methane on Copper

Xuesong Li†, Carl W. Magnuson†, Archana Venugopal‡, Rudolf M. Tromp¡ì, James B. Hannon¡ì, Eric M. Vogel‡, Luigi Colombo*¡Î, and Rodney S. Ruoff*†
J. Am. Chem. Soc., 2011, 133 (9), pp 2816¨C2819

Graphene single crystals with dimensions of up to 0.5 mm on a side were grown by low-pressure chemical vapor deposition in copper-foil enclosures using methane as a precursor. Low-energy electron microscopy analysis showed that the large graphene domains had a single crystallographic orientation, with an occasional domain having two orientations. Raman spectroscopy revealed the graphene single crystals to be uniform monolayers with a low D-band intensity. The electron mobility of graphene films extracted from field-effect transistor measurements was found to be higher than 4000 cm2 V−1 s−1 at room temperature.
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