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Chemical Synthesis and Characterizations of SrSi2O2N2: Eu2+ Phosphors for White LEDs Applications

Abstract

白光发光二极管(whitelight-emittingdiodes,WLEDs)具有寿命长、能耗低以及结构紧凑等优点,因此被广泛的关注。目前,基于蓝光LED的荧光粉转换WLEDs(phosphor-converted-WLEDs,PC-WLEDs)是市场的主流,该方案需要搭配荧光粉以产生白光。因此,荧光粉是PC-WLEDs的关键材料之一。 为了获得较高显色指数的PC-WLED,绿色荧光粉是必不可少的。SrSi2O2N2:Eu2+(SSON)是一种性能优异的绿色荧光粉,具有较高的量子效率,较宽的吸收带(紫外到蓝光)以及良好的稳定性。通常使用高温固相法(high-temperaturesolid...White light-emitting diodes (WLEDs) have attracted great attentions due to their advantages of long lifetime, compact structure, and low power consumption. The phosphor-converted WLEDs (PC-WLEDs) that are based on blue LEDs are the mainstream of the market. This strategy requires phosphor to generate white light. Thus, the phosphor is a key material of PC-WLEDs. The green phosphor is very importa...学位:工学博士院系专业:材料学院_材料物理与化学学号:3032011015413

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