Effective Solution to Prevent Degradation of LED Systems Due to Sulphur and Chlorine Compounds

Abstract

Despite LEDs robustness against aging, it is known that silver-plated components in mid and low power LEDs suffers premature degradation when exposed to Sulfur- or Chlorine-compounds, even at low concentration. This issue can be particularly severe in LED luminaires, where also reflectors can be silver-coated. In this paper we describe a novel solution based on a getter powder able to effectively and irreversibly trap the noxious gases and prevent silver tarnishing.