非晶碳氮纳米尖端的微结构和发光机理

Microstructure and Photoluminescence Mechanism of Amorphous Carbon Nitride Nanotips

利用等离子体增强热丝化学气相沉积系统,用CH4、H2和N2为反应气体,在Si衬底上制备了碳氮纳米尖端。用扫描电子显微镜和显微Raman光谱仪对其进行了表征。在室温下测试了它的发光性能,发光谱由中心约为406 nm和506 nm的两条发光带组成。根据Raman散射谱,对其微结构进行了分析。结合非晶碳氮薄膜的结构和发光机理,分析了它的发光性能。

Carbon nitride nanotips were prepared on silicon substrate in plasma-enhanced hot filament chemical vapor deposition system,in which methane,hydrogen and nitrogen were used as the reaction gases.The carbon nitride nanotips were characterized by scanning electron microscopy and micro-Raman spectroscopy.The photoluminescence of the carbon nitride nanotips was measured at room temperature and the photoluminescence spectrum shows two emission bands at 406 and 506 nm.Combined with the Raman spectrum,the microstructure of the carbon nitride was analyzed.According to the structure and photoluminescence mechanism of amorphous carbon nitride films,the photoluminescence of carbon nitride nanotips was studied.