Journal
SURFACE & COATINGS TECHNOLOGY
Volume 320, Issue -, Pages 579-583Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.surfcoat.2016.10.092
Keywords
Photo-electrochemical; Graphene nanowalls; Coating; CdTe
Funding
- National High Technology Research and Development Program of China [2015AA034801]
- National Natural Science Foundation of China [61405021, 11404329, 61504148, 5140229, 31501084]
- Natural Science Foundation of Chongqing, China [cstc2014jcyjA40045, CSTC2014jcyjjq50004]
- Visiting Scholar Foundation of Key Laboratory of Optoelectronic Technology & Systems (Chongqing University), Ministry of Education
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Recently, graphene-like nanofilm materials have attracted extensive attention as the fundamental building blocks for potential applications in optoelectronic devices. Here, we developed a simple and versatile technique to directly produce high-quality graphene nanowalls on silica substrate without any catalyst and post-transfer. It shows that the entire surface of silica substrate is fully covered with continuous graphene nanowalls with well-connected network. Moreover, the prepared optical films exhibit excellent optical absorption with a high absorbance of 95% at a wide range of waveband from visible to near infrared. Such a three dimensional film material with super-large surfaces and outstanding optical properties is further decorated with CdTe nanofilm and used as a photo-electrochemical working electrode. The prepared electrode exhibits a fast photo-responsive behavior with high photo-current density up to 3 mA/cm(2). Our study identifies that graphene nanowalls served as an excellent transfer black body can enhance the photo-electrochemical performance of electrode when it is sensitized with semiconductor nanofilms. (C) 2016 Elsevier B.V. All rights reserved.
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