ION EXCHANGE-ASSISTED SURFACE PASSIVATION TOWARD HIGHLY STABLE RED-EMITTING FLUORIDE PHOSPHORS FOR LIGHT-EMITTING DIODES

Ion exchange-assisted surface passivation toward highly stable red-emitting fluoride phosphors for light-emitting diodes

Abstract A facile and environmentally friendly ion exchange-assisted surface passivation (IASP) strategy is presented for synthesizing red emitting Mn4+-activated fluoride phosphors.A substantial, pristine Mn4+-free shell layer, applied as a coating to Mn4+ doped potassium fluorosilicate K2SiF6:Mn4+ (KSFM) phosphors, enhances both water resistance

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Gliders for passive acoustic monitoring of the oceanic environment

Ocean gliders are quiet, buoyancy-driven, long-endurance, profiling autonomous platforms.Gliders therefore possess unique advantages as platforms for Passive Acoustic Monitoring (PAM) of the marine environment.In this paper, we review available glider platforms and passive acoustic monitoring systems, and explore current and potential uses of passi

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