石墨烯
材料科学
纳米结构
化学气相沉积
异质结
光致发光
纳米技术
表征(材料科学)
光谱学
光电子学
石墨烯纳米带
量子力学
物理
作者
Jian Lin,Miroslav Penchev,Guoping Wang,Rajib Paul,Jiebin Zhong,Xiaoye Jing,Mihri Ozkan,Cengiz S. Ozkan
出处
期刊:Small
[Wiley]
日期:2010-09-28
卷期号:6 (21): 2448-2452
被引量:89
标识
DOI:10.1002/smll.201000250
摘要
Abstract In this work, the synthesis and characterization of three‐dimensional hetergeneous graphene nanostructures (HGN) comprising continuous large‐area graphene layers and ZnO nanostructures, fabricated via chemical vapor deposition, are reported. Characterization of large‐area HGN demonstrates that it consists of 1–5 layers of graphene, and exhibits high optical transmittance and enhanced electrical conductivity. Electron microscopy investigation of the three‐dimensional heterostructures shows that the morphology of ZnO nanostructures is highly dependent on the growth temperature. It is observed that ordered crystalline ZnO nanostructures are preferably grown along the <0001> direction. Ultraviolet spectroscopy and photoluminescence spectroscopy indicates that the CVD‐grown HGN layers has excellent optical properties. A combination of electrical and optical properties of graphene and ZnO building blocks in ZnO‐based HGN provides unique characteristics for opportunities in future optoelectronic devices.
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