Improved ESD voltage by inserting floating metal ring in GaN-based light emitting diodes

Abstract

Improvement of the electrostatic discharge (ESD) voltage in an InGaN/GaN blue light emitting diode (LED) grown on sapphire substrate is presented by inserting floating metal near the n-electrode. ESD voltages about four times larger than previously observed are experimentally obtained for LEDs with floating metal compared to those without.