Fabrication and field emission properties of regular hexagonal flowerlike ZnO nanowhiskers

Abstract

Regular hexagonal flowerlike zinc oxide (ZnO) whiskers have been fabricated on the indium tin oxide electrodes with glass panel. A relatively simple hydrothermal growth process of low temperature is developed. The field emission properties of the flowerlike ZnO nanowhiskers have a low field emission threshold voltage (2.2V∕μm at a current density of 0.1μA∕cm2) and a high current density of 1mA∕cm2 at an applied field of 6.3V∕μm. The hydrothermal process method and good field emission properties indicate their potential application in field emission display device with glass panels.