• 专利标题:   Single-crystal graphene sheet, useful in a transparent electrode in electrical devices or electromagnetic devices including display devices and solar cells, comprises a polycyclic aromatic molecule and specified layers.
  • 专利号:   US2009155561-A1, JP2009143799-A, CN101462717-A, KR2009065206-A, KR1344493-B1
  • 发明人:   CHOI J, HAN J, SHIN H, YOON S, CHOI J Y, SHIN H J, IN Z, HAN J Y, YOON S M
  • 专利权人:   SAMSUNG ELECTRONICS CO LTD, SAMSUNG ELECTRONICS CO LTD, SAMSUNG ELECTRONICS CO LTD
  • 国际专利分类:   B32B009/00, C30B001/02, D01F009/12, C01B031/04, C30B001/04, C30B029/02, C30B029/36
  • 专利详细信息:   US2009155561-A1 18 Jun 2009 D01F-009/12 200942 Pages: 15 English
  • 申请详细信息:   US2009155561-A1 US170014 09 Jul 2008
  • 优先权号:   KR132682

▎ 摘  要

NOVELTY - Single-crystal graphene sheet (410) comprises a polycyclic aromatic molecule and 1-300 layers, where: many carbon atoms are covalently bound to each other to form a single-crystal; and a peak ratio of a Raman D band intensity to a Raman G band intensity is less than or equal to 0.2. USE - (I) is useful in a transparent electrode (claimed) in electrical devices or electromagnetic devices including display devices and solar cells. ADVANTAGE - (I) does not have any defects, hence a peak ratio of a Raman D band intensity to a Raman G band intensity is less than or equal to 0.2, preferably 0. (I) has uniform shape and can be produced economically and reproducibly. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a method for preparing single-crystal graphene sheet (I), comprising: forming a catalyst layer comprising a single-crystal graphitizing metal catalyst sheet; disposing a carbonaceous material on the catalyst layer; and heat-treating the catalyst layer and the carbonaceous material in at least one of an inert atmosphere and a reducing atmosphere to form (I). DESCRIPTION OF DRAWING(S) - The figure shows a structure of a single-crystal graphene sheet formed on a catalyst layer. Single-crystal graphene sheet. (410)