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Preface to the Special Issue on Luminescent Materials for Solid State Lighting

机译:固态照明发光材料特刊的序言

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The ongoing rapid transition from conventional lighting to solid state lighting (SSL) has created an urgent need for development of new classes of luminescent materials that could be excited either in the spectral range of 380-410 nm for near UV light-emitting diodes (LEDs) or 440-460 nm for blue emitting LEDs. Compared to the inorganic phosphors that have been developed and optimized over the last half century for excitation at 254 nm and 185 nm from the low pressure Hg-discharge lamps, these materials are expected to have high quantum efficiency at higher temperatures and photon fluxes with relatively small Stokes shift. These requirements have significantly limited the utility of conventional oxide based inorganic phosphors activated by Mn~(2+), Eu~(3+), or Tb~(3+) while creating opportunities for novel luminescent materials such as (oxy)nitrides, sulfides, oxy-halides etc.
机译:从传统照明到固态照明(SSL)的持续快速过渡已迫切需要开发新型的发光材料,这些材料可以在380-410 nm的光谱范围内被激发用于近紫外发光二极管(LED) )或440-460 nm(用于发出蓝光的LED)。与上个世纪开发和优化的用于从低压汞放电灯在254 nm和185 nm激发的无机荧光粉相比,这些材料在较高温度下具有较高的量子效率,并且光子通量相对较高小斯托克斯移位。这些要求大大限制了由Mn〜(2 +),Eu〜(3+)或Tb〜(3+)活化的传统氧化物基无机荧光粉的用途,同时为诸如(氧)氮化物等新型发光材料创造了机会,硫化物,卤氧化物等

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