Direct PECVD growth of vertically erected graphene walls on dielectric   substrates as excellent multifunctional electrodes

doi:10.1039/c2ta00234e

CORC > 北京大学 > 化学与分子工程学院

	Direct PECVD growth of vertically erected graphene walls on dielectric substrates as excellent multifunctional electrodes
	Yang, Chongyin ; Bi, Hui ; Wan, Dongyun ; Huang, Fuqiang ; Xie, Xiaoming ; Jiang, Mianheng
刊名	journal of materials chemistry a
	2013
关键词	CHEMICAL-VAPOR-DEPOSITION SENSITIZED SOLAR-CELLS CARBON-FILMS PLASMA TRANSPARENCY INJECTION OXIDE
DOI	10.1039/c2ta00234e
英文摘要	A novel uniform multi-level matrix of vertically erected graphene walls is directly grown on a dielectric substrate by plasma enhanced chemical vapor deposition (PECVD) at 900 degrees C without the presence of any catalyst and post-transfer treatment. Such a two-level structure is composed of continuous vertically erected graphene sheets (the second level) on a nanocrystalline graphene film (the first level). A nanocrystalline film is formed in the first stage (<15 min), and the graphene walls initialize on the boundary C sp(3) atoms as nucleation centers to grow the erected graphene walls as the second-level component. The microstructure of the graphene walls can be modified by plasma power, growth time and seed layer coating. The unique three-dimensional graphene structure possessed high hydrophobicity (contact angle: 141 degrees), outstanding electron conductivity (sheet resistance: 198 Omega sq(-1)), and tunable transparency (91.9-38.0% at 550 nm). The three-dimensional structure enables the graphene to act as an excellent electron transport network with high surface area in many aspects. The highly conductive graphene walls were used as the counter electrode of dye-sensitized solar cells (DSSC) with a photovoltaic efficiency of 6.01%, comparable to FTO-based DSSCs (6.10%). This in situ one-step growth indicates the great potential to fabricate excellent electrodes for photovoltaic and electronic applications.; Chemistry, Physical; Energy & Fuels; Materials Science, Multidisciplinary; SCI(E); EI; 13; ARTICLE; 3; 770-775; 1
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/150847]
专题	化学与分子工程学院
推荐引用方式 GB/T 7714	Yang, Chongyin,Bi, Hui,Wan, Dongyun,et al. Direct PECVD growth of vertically erected graphene walls on dielectric substrates as excellent multifunctional electrodes[J]. journal of materials chemistry a,2013.
APA	Yang, Chongyin,Bi, Hui,Wan, Dongyun,Huang, Fuqiang,Xie, Xiaoming,&Jiang, Mianheng.(2013).Direct PECVD growth of vertically erected graphene walls on dielectric substrates as excellent multifunctional electrodes.journal of materials chemistry a.
MLA	Yang, Chongyin,et al."Direct PECVD growth of vertically erected graphene walls on dielectric substrates as excellent multifunctional electrodes".journal of materials chemistry a (2013).