SKM 2023 – scientific programme

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HL: Fachverband Halbleiterphysik

HL 44: Nitrides: Devices

HL 44.7: Talk

Thursday, March 30, 2023, 16:45–17:00, POT 112

Theoretical improvement of 40% in efficiency of AlGaN UV LED using evolution strategies optimization algorithm — •Lucie Leguay and Andrei Schliwa — Institute of Solid-State Physics, Technische Universität Berlin, Hardenbergstr. 36, 10623 Berlin

Nowadays, LED light sources can be found in many technologies ranging from smart lamps to high-quality screen displays. In particular, ultraviolet (UV) LED light can be used to sterilise surfaces and food, to purify air and water and to detect gas and diseases.

However, the nitride-based existing technology is still lacking efficiency. One way to enhance the performance of such devices is to improve their design with optimization algorithms such as evolutionary algorithms which are inspired by biological evolution.

We report an increase of 40% in the theoretical internal quantum efficiency (IQE) of an AlGaN UV-emitting multiple quantum well nanostructure using an evolution strategies algorithm paired with the simulation sofware nextnano++.