Fig. 2
From: Electrically Pumped III-N Microcavity Light Emitters Incorporating an Oxide Confinement Aperture
a Top view of device after ITO deposition. b Near-field images of half-cavity devices with various apertures under 7 mA injection current at RT. c Emission spectrum of a half-cavity device with a 15-μm-diameter oxide aperture. d Voltage-current characteristics of whole-cavity device with different aperture sizes at RT. e Extracted turn-on voltages of whole-cavity device as a function of diameter of oxide aperture