Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: Controlled Synthesis of Monolayer Graphene Toward Transparent Flexible Conductive Film Application | Nanoscale Res Lett 2010 5 1768-1773 DOI s11671-010-9708-9 NANO EXPRESS Controlled Synthesis of Monolayer Graphene Toward Transparent Flexible Conductive Film Application Byeong-Joo Lee Han-Young Yu Goo-Hwan Jeong Received 24 June 2010 Accepted 15 July 2010 Published online 28 July 2010 The Author s 2010. This article is published with open access at Abstract We demonstrate the synthesis of monolayer graphene using thermal chemical vapor deposition and successive transfer onto arbitrary substrates toward transparent flexible conductive film application. We used electron-beam-deposited Ni thin film as a synthetic catalyst and introduced a gas mixture consisting of methane and hydrogen. To optimize the synthesis condition we investigated the effects of synthetic temperature and cooling rate in the ranges of 850-1 000 C and 2-8 C min respectively. It was found that a cooling rate of 4 C min after 1 000 C synthesis is the most effective condition for monolayer graphene production. We also successfully transferred as-synthesized graphene films to arbitrary substrates such as silicon-dioxide-coated wafers glass and polyethylene terephthalate sheets to develop transparent flexible and conductive film application. Keywords Graphene Chemical vapor deposition Transfer Raman spectroscopy Transparent Flexible Conductive film Introduction Graphene is a newly discovered carbon-based monolayer sheet consisting of honeycomb structures with two- . Lee . Jeong Department of Advanced Materials Science and Engineering Kangwon National University Chuncheon Gangwon-do 200-701 Korea e-mail ghjeong@ . Yu Electronics and Telecommunications Research Institute Daejeon 305-600 Korea dimensional arrays 1 . It has been attracting great attention owing to its fascinating mechanical electronic and optical properties 1-3 . Fundamental and application research is being carried out intensively in order to determine the potential uses. Several .
