▎ 摘　　要

This paper presents a parallel plate-type field emission device of potassium hydroxide-doped electrochemically reduced graphene oxide (GO) manufactured using highly oriented pyrolytic graphite through electrochemical exfoliation. The material properties of the GO were tested through Raman spectroscopy, X-ray diffraction, and X-ray photoelectronspectroscopy. The optimal electron emission characteristics of the device were as follows: turn-on field = 2.03 V/mu m, field emission current = 16.4 mu A, and field emission enhancement factor = 8377. At an emission peak wavelength of 563.7 nm, the optimal device had a light flux of 4.21 lumens and an illumination of 140.3 lux. These properties can be utilized in various optoelectronicdevices, such as nanoelectronics devices, sensors, electrochemical systems, and energy storage devices.