Morphology-controllable fabrication and enhanced field emission of multilayer graphene-silicon nanowire composites

作者：Deng, Jian-Hua^*; Cheng, Lin; Wang, Fan-Pe; Li, De-Jun; Cheng, Guo-An

来源：Materials Letters, 2015, 138: 175-178.

DOI：10.1016/j.matlet.2014.09.124

• Carbon materials
• Silicon nanowire
• Nanocomposites
• Field emission

Multilayer graphene-silicon nanowire (MLG-SiNW) composites were prepared by using microwave plasma enhanced chemical vapor deposition and their field emission (FE) characteristics were studied. The morphology of MLG-SiNW composites can be readily controlled by tuning the concentration of carbon source and the microwave power. The FE study indicates that MLG-SiNW composites have superior FE performance to that of SiNWs. MLG-SiNW composites with optimal morphology exhibit excellent FE properties. They have a low turn-on electric field of 242 V/mu m and also have good FE stability. We consider that both the large aspect ratio of SiNWs and the unique structure of MLGs are responsible for the enhanced FE properties.

• 出版日期2015-1-1
• 单位北京师范大学; 天津师范大学