2021-12-30

Effect of Auger Electron–hole Asymmetry on Efficiency Droop in InGaN QW LEDs

Indium gallium nitride (InGaN)-based blue light-emitting diodes (LEDs) are the backbone of the solid-state lighting (SSL), but their luminous efficiency peaks under low current densities (<35A/cm2) and rolls off under high current injection levels (efficiency droop), requiring a design tradeoff between light output power, efficiency and cost. It is widely accepted that Auger recombination is the main cause for the experimentally observed large (~50%) efficiency droop in III–nitride LEDs. Yet there is no clear understanding of the origin of the magnitude of Au...
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Strawberries flourish in a Controlled-Environment Agriculture Installation with Horticulture LED lighting provided by Cree LED and RED Horticulture. (Photo courtesy of RED Horticulture) The integration of technology into every aspect of life i... READ MORE

The prior blog titled “Nichia’s contribution to a realization of a mercury-free society” took a short break. However, there was a release about new LED-based water disinfection devices made by Miura Co., Ltd., a Japanese manu... READ MORE