Field Emission of Electrons from Single LaB6 Nanowires (pages 87–91)
H. Zhang, J. Tang, Q. Zhang, G. Zhao, G. Yang, J. Zhang, O. Zhou and L.-C. Qin
Article first published online: 5 DEC 2005 | DOI: 10.1002/adma.200500508
Single-crystalline lanthanum hexaboride (LaB6) nanowires show excellent electric-field-induced electron emission following the Fowler–Nordheim scheme. The LaB6 nanowires grow in the <001> crystallographic direction (see Figure) with diameters of about 20 nm. An emission current of 30 nA from a single nanowire, corresponding to a emission current density of 5 × 105 A cm–2, has been obtained.