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Monte-Carlo based simulation of surface light emission profiles from AlGaInP light emitting diodes

Monte-Carlo based simulation of surface light emission profiles from AlGaInP light emitting diodes

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Light emission profiles from AlGaInP LEDs are compared with those obtained via Monte-Carlo simulation and a lossy transmission line model. Results show good agreement for devices with thin current spreading layers. However, for thicker layers, geometric effects dominate the output profile, resulting in discrepancies between experimental data and the transmission line model. The simulation of emission profiles confirms this discrepancy, caused by light escaping from below the p-contact.

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