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Improving the -3  dB bandwidth of micro-size LEDs through p-electrode patterns for visible light communication.

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We systematically studied the effect of p-electrode patterns on the optical properties and -3dB bandwidth of micro-size LEDs. The current spreading distribution can be effectively improved via adjusting the number… Click to show full abstract

We systematically studied the effect of p-electrode patterns on the optical properties and -3dB bandwidth of micro-size LEDs. The current spreading distribution can be effectively improved via adjusting the number and shape of the p-electrode branch, thus increasing the injection saturation current density and decreasing the series resistance. Compared with the micro-size LED using a disk p-electrode, the saturation light output power and -3dB bandwidth of the micro-size LED using a six-branches spiral p-electrode increase by 39.48% and 76.61%, respectively. Such a p-electrode pattern is a promising solution for micro-size LED applications in both illumination and visible light communication systems.

Keywords: bandwidth micro; size; electrode patterns; size leds; micro size

Journal Title: Applied optics
Year Published: 2020

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