液晶与显示2007，Vol.22Issue(6)：682-686,5.
酞菁裂解法制备定向碳纳米管阵列及其场发射性能研究
Growth of Vertically Aligned Carbon Nanotubes by Pyrolysis of Iron Phthalocyanine and their Field Emission Properties
摘要
Abstract
Carbon nanotubes are promising as new optoeleetronic materials such as new electron field emitters in panel displays.For most of applications,it is highly desirable to prepare aligned carbon nanotubes (ACNTs) so that the properties of individual nanotubes can be easily assessed and they can be incorporated effectively into devices for the applications in panel fieldemitting displays.By pyrolysis of iron(Ⅱ) phthalocyanine (FeC32N8H16) at 800～1 000℃under low pressure(Ar/H2),large-scale of vertically aligned carbon nanotubes have been synthesized on quartz glass plates.The character and structure of ACNTs were analyzed by SEM and TEM,respectively.The results indicate that the average length of ACNTs is about 20 μm with a Iarger diameter range from 40 nm to 70 am.These ACNTs have a cylindrical and barnboo-like structure and are multi-walled carbon nanotubus.By the investigation of preparation parameters,it has been found that the system vacuum and growth temperature have larger influences on the synthesis of such nanotubes.The field emission properties of ACNTs were measured and the result shows a very powerful ability of electron emission with a turn-on voltage of 0.67 V·μm-1(I=1 μA) and a threshold voltage of 2.5 V·μm-1.关键词
定向碳纳米管阵列/高温裂解/场发射Key words
vertically aligned carbon nanotubes/pyrolysis/field emission分类
信息技术与安全科学引用本文复制引用
宋海燕,叶晓燕,李艳楠,单志超,何品刚,孙卓,方禹之..酞菁裂解法制备定向碳纳米管阵列及其场发射性能研究[J].液晶与显示,2007,22(6):682-686,5.基金项目
Supported by National Natural Science Foundation of China(No.20675031,50672020) （No.20675031,50672020）
Science and Technology Commission of Shanghai Municipality(No.06PJ14032,No.0552nm042) （No.06PJ14032,No.0552nm042）
