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首页> 外文期刊>Journal of the European Ceramic Society >Stable and chromaticity-tunable phosphor-in-glass inorganic color converter for high-power warm white light-emitting diode
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Stable and chromaticity-tunable phosphor-in-glass inorganic color converter for high-power warm white light-emitting diode

机译:用于大功率暖白色发光二极管的稳定且色度可调的玻璃中无机荧光粉转换器

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摘要

White light-emitting diodes (w-LEDs) have captured much attention due to their superior properties of high luminous efficiency, low energy consumption and long lifetime. However, current white lighting devices suffer from several drawbacks such as the deficiency of red component and the poor thermal stability of silicone. In this work, a chromaticity-tunable phosphor-in-glass (PiG) inorganic color converter has been successfully fabricated for high-power warm w-LEDs. At first, a series of La2(1-x)Eu2xTi2O7 (x=0.05-0.5) red phosphors with excellent thermal stability and high quantum efficiency have been synthesized. Importantly, the as-synthesized La2Ti2O7:Eu3+ and commercial YAG:Ce3+ phosphors were incorporated into a specially low-melting precursor glass to form PiG composite. Finally, the high-power warm w-LEDs were constructed by coupling a PiG plate on an InGaN blue chip, and the w-LED showed an optimal luminous efficacy of 105 lm/W, a CCT of 4809K and a CRI of 83.5. (C) 2016 Elsevier Ltd. All rights reserved.
机译:白光发光二极管(w-LEDs)由于具有高发光效率,低能耗和长寿命的卓越性能而备受关注。然而,当前的白色照明设备具有若干缺点,例如红色成分的缺乏和硅树脂的热稳定性差。在这项工作中,已经成功地制造了用于大功率暖色w-LED的色度可调玻璃中磷(PiG)无机颜色转换器。首先,合成了一系列具有出色的热稳定性和高量子效率的La2(1-x)Eu2xTi2O7(x = 0.05-0.5)红色荧光粉。重要的是,将合成后的La2Ti2O7:Eu3 +和商用YAG:Ce3 +磷光体掺入特别低熔点的前体玻璃中,以形成PiG复合材料。最后,通过在InGaN蓝芯片上耦合PiG板来构建大功率暖色w-LED,w-LED的最佳发光效率为105 lm / W,CCT为4809K,CRI为83.5。 (C)2016 Elsevier Ltd.保留所有权利。

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