Preparation of high quality single layer graphene by chemical vapor deposition

碩士 === 國立中山大學 === 化學系研究所 === 103 === Graphene, a two-dimensional carbon material, has a honeycomb-like planar structure comprised of sp2-boned carbons. Due to the extraordinary properties, graphene has been widely studied and applied in many different fields, such as, photoelectronic devices, touch...

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Main Authors: Wei-chin Li, 李尉勤
Other Authors: Chun-hu Chen
Format: Others
Language:zh-TW
Published: 2015
Online Access:http://ndltd.ncl.edu.tw/handle/m3vtav
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spelling ndltd-TW-103NSYS50650802019-05-15T22:17:49Z http://ndltd.ncl.edu.tw/handle/m3vtav Preparation of high quality single layer graphene by chemical vapor deposition 化學氣相沉積法製備高品質單層石墨烯之研究 Wei-chin Li 李尉勤 碩士 國立中山大學 化學系研究所 103 Graphene, a two-dimensional carbon material, has a honeycomb-like planar structure comprised of sp2-boned carbons. Due to the extraordinary properties, graphene has been widely studied and applied in many different fields, such as, photoelectronic devices, touch panels, energy storage materials and solar cells. The chemical vapor deposition has been demonstrated to prepare large area single-layer graphene in the recent studies. The single layer graphene are produced with copper foils as catalysts and the methane as carbon sources. The high temperature (1000℃) is necessary to decompose methane to perform deposition on the surface of copper foil to yield graphene. However, the fine particle contamination on graphene surfaces are observed both in the literature and commercial products. This contamination issue of CVD graphene is problematic for relevant applications of graphene. The quality of graphene is affected by metal substrates, so the pretreatment of metal substrates, including high temperature annealing, and electropolish was studied to reveal the correlation between graphene quality and metal substrates. In this research, we studied three pretreatment factors of hydrogen-assisted copper reduction, copper roughness under high temperature annealing, and impurity removals of copper foils via electropolish. The impurities of copper were eliminated to generate high quality graphene successfully. The sheet resistance of our high quality graphene are decreased by 3.5 times than that of the blank ones, and the improved transmittance from 96% to 98%. Chun-hu Chen 陳軍互 2015 學位論文 ; thesis 78 zh-TW
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language zh-TW
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description 碩士 === 國立中山大學 === 化學系研究所 === 103 === Graphene, a two-dimensional carbon material, has a honeycomb-like planar structure comprised of sp2-boned carbons. Due to the extraordinary properties, graphene has been widely studied and applied in many different fields, such as, photoelectronic devices, touch panels, energy storage materials and solar cells. The chemical vapor deposition has been demonstrated to prepare large area single-layer graphene in the recent studies. The single layer graphene are produced with copper foils as catalysts and the methane as carbon sources. The high temperature (1000℃) is necessary to decompose methane to perform deposition on the surface of copper foil to yield graphene. However, the fine particle contamination on graphene surfaces are observed both in the literature and commercial products. This contamination issue of CVD graphene is problematic for relevant applications of graphene. The quality of graphene is affected by metal substrates, so the pretreatment of metal substrates, including high temperature annealing, and electropolish was studied to reveal the correlation between graphene quality and metal substrates. In this research, we studied three pretreatment factors of hydrogen-assisted copper reduction, copper roughness under high temperature annealing, and impurity removals of copper foils via electropolish. The impurities of copper were eliminated to generate high quality graphene successfully. The sheet resistance of our high quality graphene are decreased by 3.5 times than that of the blank ones, and the improved transmittance from 96% to 98%.
author2 Chun-hu Chen
author_facet Chun-hu Chen
Wei-chin Li
李尉勤
author Wei-chin Li
李尉勤
spellingShingle Wei-chin Li
李尉勤
Preparation of high quality single layer graphene by chemical vapor deposition
author_sort Wei-chin Li
title Preparation of high quality single layer graphene by chemical vapor deposition
title_short Preparation of high quality single layer graphene by chemical vapor deposition
title_full Preparation of high quality single layer graphene by chemical vapor deposition
title_fullStr Preparation of high quality single layer graphene by chemical vapor deposition
title_full_unstemmed Preparation of high quality single layer graphene by chemical vapor deposition
title_sort preparation of high quality single layer graphene by chemical vapor deposition
publishDate 2015
url http://ndltd.ncl.edu.tw/handle/m3vtav
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