Field emission from crystalline copper sulphide nanowire arrays

• DOI: 10.1063/1.1478149
• Publication Date: 2002-07-26T14:24:57Z
• Authors: Jun Chen; S. Z. Deng; N. S. Xu; Suhua Wang; Xiaogang Wen; Shihe Yang; Chunlei Yang; Jiannong Wang; Weikun Ge
• Keywords: Cold cathode

Straight crystalline copper sulphide (Cu2S) nanowire arrays have been grown by using a simple gas–solid reaction at room temperature. These were demonstrated to exhibit semiconductor properties. Field emission was observed field of ∼6 MV/m, and its current-field characteristics deviate from Fowler–Nordheim theory, i.e., showing nonlinear plot. The uniform the whole transparent anode technique, their variation with applied recorded. individual nanowires also studied microscope, found consist number spatially resolved diffuse spots. Finally, stable current different levels over time findings indicate that as cold cathode potential future, worthy further comprehensive investigation. technical importance emitter is given.