Field emission from AlN nanorod array

摘要

Single-crystalline mushroom-like AlN nanorod array has been synthesized. The AlN nanorods, with diameters of 50-200 nm and lengths of several micrometers, are distributed uniformly with density of 10~7-10~8 rods/cm~2. The field emission measurements show that the turn-on field is 8.8 V/μm at a field emission current density (J) of 10 μA/cm~2, and the J (10.31 mA/cm~2) fluctuation is as small as 2% within an hour. The relationship between the nanostructure and field emission properties is discussed. The low turn-on field and high current stability demonstrate that the mushroom-like AlN nanorod array is a promising field emission material.