首页 | 本学科首页   官方微博 | 高级检索  
     检索      


Efficient field emission from well-oriented Cu2O film
Authors:Qun Tang  Xihong Chen  Yitai Qian
Institution:a Department of Chemistry, Structure Research Laboratory, University of Science and Technology of China, Hefei, Anhui 230026, People's Republic of China
b School of Physics, Peking University, Beijing 100871, People's Republic of China
Abstract:Well-oriented Cu2O films comprising of octahedral-shaped crystals were grown directly on copper foil via an hydrothermal treatment. The well-oriented films were characterized by scanning electron microscopy (SEM) and X-ray diffraction (XRD). Field emission from the film showed good emission properties, and, the electron emission turn-on field (Eto) and threshold field (Ethr) are about 9.6 and 13.4 V/μm respectively, which is similar to the values reported for CuO nanofiber, although the latter has a much larger size. The corresponding Fowler-Nordheim (F-N) plots showed a linear behavior. The sharp corners of the tips are considered as main electron emitters and account for its good performance.
Keywords:73  50  &minus  h  79  70  +q
本文献已被 ScienceDirect 等数据库收录!
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号