Field emission of bismuth sulfide upright-standing platelets

Abstract

Indium-tin-oxide substrate-supported chemically synthesized bismuth sulfide upright-standing platelets of micron-size height and nanometer-size width are explored for the field emission. Bismuth sulfide upright-standing platelets electrode shows a turn-on field of 2.83 V/μm at a current density of 10 μA/cm2, a maximum emissive current of 49 μA/cm2 (3.5V/μm), and 9396 beta-factor comparable to the field emission studies of carbon nanotubes, when used as a cathode for emitting current under applied voltage.