中国物理B ›› 2011, Vol. 20 ›› Issue (3): 37903-037903.doi: 10.1088/1674-1056/20/3/037903
• CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES • 上一篇 下一篇
李晨, 田园, 王登科, 时雪钊, 惠超, 申承民, 高鸿钧
Li Chen(李晨), Tian Yuan(田园), Wang Deng-Ke(王登科), Shi Xue-Zhao(时雪钊), Hui Chao(惠超), Shen Cheng-Min(申承民), and Gao Hong-Jun(高鸿钧)†
摘要: Single crystalline boron nanocones are prepared by using a simple spin spread method in which Fe3O4 nanoparticles are pre-manipulated on Si(111) to form catalyst patterns of different densities. The density of boron nanocones can be tuned by changing the concentration of catalyst nanoparticles. High-resolution transmission electron microscopy analysis shows that the boron nanocone has a β-tetragonal structure with good crystallization. The field emission behaviour is optimal when the spacing distance is close to the nanocone length, which indicates that this simple spin spread method has great potential applications in electron emission nanodevices.
中图分类号: (Field emission, ionization, evaporation, and desorption)