银-四氰基对苯二醌二甲烷纳米线阵列的制备及其场发射性能

Preparation and Field Emission Capability of Silver Tetracyanoquinodimethane Nanowire Array

采用多孔氧化铝模板法,通过四氰基对苯二醌二甲烷(TCNQ)与金属Ag的化学反应,制备了银-四氰基对苯二醌二甲烷(AgTCNQ)纳米线阵列.AgTCNQ的直径由多孔氧化铝模板的内孔直径决定,而其长度则可由反应时间与多孔氧化铝膜模板的厚度来控制.所制备的AgTCNQ纳米线阵列表面光滑,直径均一,具有良好的场发射特性.

The well-aligned silver 7,7,8,8-tetracyanoquinodimethane （AgTCNQ） nanowire array was prepared with the anodic aluminum oxide（AAO） template method. The size, length and morphology of AgTCNQ nanowires were well characterized via scanning electronic microscopy（SEM） and transmission electronic microscopy（TEM）. It is revealed that the AgTCNQ nanowires are uniform and both the length and diameter are controllable. The field emission property of the AgTCNQ was studied and the result revealed that the templatesynthesized AgTCNQ nanowire array had excellent field emission property. The turn-on electric field of electron emission is 1.51 V/μm, and the F-N enchancement factor is 21. 4, which suggest that AgTCNQ nanowires are perfect candidates for field-emitting materials.