Plasma-chemical synthesis, structure and photoluminescence properties of hybrid graphene nanoflake–BNCO nanowall systems. Issue 41 (6th October 2016)

• Record Type: Journal Article
• Authors: Wang, B. B.; Zheng, K.; Gao, D.; Levchenko, I.; Ostrikov, K.; Keidar, M.; Zou, S. S.
• Is Part Of: Journal of materials chemistry. Volume 4:Issue 41(2016)
• Page Start: 9788
• Page End: 9797
• Publication Date: 2016-10-06
• Subjects: Materials -- Periodicals; Chemistry, Analytic -- Periodicals; Optical materials -- Research -- Periodicals; Electronics -- Materials -- Research -- Periodicals; 543.0284
• DOI: 10.1039/c6tc03871a
• Languages: English
• ISSNs: 2050-7526

Abstract

Abstract : We describe a simple, efficient plasma-chemical technique for the synthesis of hybrid structures formed by vertically oriented BNCO nanowalls and vertically oriented graphene nanoflakes (BNCONW/GNFs), as well as their structure and photoluminescence properties. Abstract : We describe a simple, efficient plasma-chemical technique for the synthesis of hybrid structures formed by vertically oriented BNCO nanowalls and vertically oriented graphene nanoflakes (BNCONW/GNFs), as well as their structure and photoluminescence properties. The BNCONW/GNF hybrid structures were fabricated by the synthesis of vertically oriented BNCO nanowalls in N2 –H2 plasma using the plasma-enhanced hot filament chemical vapour deposition technique, followed by the direct synthesis of vertically oriented graphene nanoflakes on the BNCO nanowalls in a methane environment using a hot filament chemical vapour deposition method, where the B4 C compound was used as the boron and carbon source. The results of field emission scanning electron microscopy, transmission electron microscopy, micro-Raman spectroscopy and X-ray photoelectron spectrometry measurements indicated that the BNCONW/GNF hybrid structures were composed of vertically oriented BNCO nanowalls and vertically oriented graphene nanoflakes. The photoluminescence studies of the vertically oriented BNCONW/GNF hybrid structures using a Ramalog system equipped with a 325 nm He–Cd laser demonstrated the possibility to efficiently tune the photoluminescence properties of the BNCONW/GNF structures by growing the graphene nanoflakes on the vertically oriented BNCONWs. Our findings can contribute to the designing of complex hybrid graphene–semiconductor structures suitable for applications in advanced next-generation optoelectronic nanodevices.