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Broad-Band and Stable Phosphor-in-Glass Enabling Ultrahigh Color Rendering for All-Inorganic High-Power WLEDs
ACS Applied Electronic Materials ( IF 4.3 ) Pub Date : 2020-08-18 , DOI: 10.1021/acsaelm.0c00557 Yang Peng 1 , Hao Wang 2 , Jiaxin Liu 3 , Qinglei Sun 3 , Yun Mou 3 , Xing Guo 4
ACS Applied Electronic Materials ( IF 4.3 ) Pub Date : 2020-08-18 , DOI: 10.1021/acsaelm.0c00557 Yang Peng 1 , Hao Wang 2 , Jiaxin Liu 3 , Qinglei Sun 3 , Yun Mou 3 , Xing Guo 4
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All-inorganic color converters are promising luminescent materials for high-power white lighting due to their excellent heat resistance and high thermal conductivity. However, the low color rendering of converters limits their applications in high-quality lighting. Herein, a broad-band and stable phosphor-in-glass (PiG) was developed for high-power white light-emitting diodes (WLEDs). This PiG converter was fabricated by sintering a green/red phosphor glass film on a glass plate with a patterned metal layer. The green Y3Al3.08Ga1.92O12:Ce3+ phosphor has a broad emission, which compensates for the cyan cavity between blue and green emission spectra, and then produces full-spectrum white light combined with the red CaAlSiN3:Eu2+ phosphor. The all-inorganic WLEDs were realized by welding the PiG on a substrate. The optical performance of PiG-based WLEDs was optimized by varying the film thickness. At the film thickness of 150 μm, the fabricated WLEDs achieve ultrahigh color quality of color rendering index (CRI) values (Ra = 95.4, R9 = 95.1, and R13 = 97.3) and fidelity/gamut index values (Rf = 91 and Rg = 102). The corresponding luminous efficacy (LE) and correlated color temperature (CCT) are 65 lm/W and 5260 K, respectively. After aging at 100 °C for 200 h, the PiG-based WLEDs exhibit low efficiency loss and stable color quality compared with the traditional phosphor-in-silicone (PiS)-based WLEDs. The prepared PiG is a broad-band and stable converter enabling ultrahigh color rendering for high-power white lighting.
中文翻译：
宽带，稳定的玻璃中磷光体，可为全无机大功率WLED提供超高色彩渲染
全无机颜色转换器具有出色的耐热性和高导热性，是用于大功率白色照明的有前途的发光材料。但是，转换器的低显色性限制了它们在高质量照明中的应用。在此，开发了用于高功率白光发光二极管（WLED）的宽带且稳定的玻璃中荧光粉（PiG）。通过在具有图案化的金属层的玻璃板上烧结绿色/红色磷光体玻璃膜来制造该PiG转换器。绿色的Y 3 Al 3.08 Ga 1.92 O 12：Ce 3+磷光体具有宽泛的发射，可补偿蓝色和绿色发射光谱之间的青色腔，然后与红色CaAlSiN 3：Eu 2+磷光体组合产生全光谱白光。通过将PiG焊接在基板上来实现全无机WLED。通过改变膜厚度，优化了基于PiG的WLED的光学性能。在150μm的膜厚度下，制造的WLED可获得超高的彩色显色指数（CRI）值（R a = 95.4，R 9 = 95.1和R 13 = 97.3）和保真度/色域指数值（R f = 91和R g= 102）。相应的发光效率（LE）和相关色温（CCT）分别为65 lm / W和5260K。在100°C下老化200小时后，与传统的有机硅荧光粉（PiS）基WLED相比，基于PiG的WLED显示出低效率损失和稳定的色彩质量。准备好的PiG是一种宽带稳定的转换器，可为大功率白色照明提供超高的色彩渲染。
更新日期：2020-09-22
中文翻译：
宽带，稳定的玻璃中磷光体，可为全无机大功率WLED提供超高色彩渲染
全无机颜色转换器具有出色的耐热性和高导热性，是用于大功率白色照明的有前途的发光材料。但是，转换器的低显色性限制了它们在高质量照明中的应用。在此，开发了用于高功率白光发光二极管（WLED）的宽带且稳定的玻璃中荧光粉（PiG）。通过在具有图案化的金属层的玻璃板上烧结绿色/红色磷光体玻璃膜来制造该PiG转换器。绿色的Y 3 Al 3.08 Ga 1.92 O 12：Ce 3+磷光体具有宽泛的发射，可补偿蓝色和绿色发射光谱之间的青色腔，然后与红色CaAlSiN 3：Eu 2+磷光体组合产生全光谱白光。通过将PiG焊接在基板上来实现全无机WLED。通过改变膜厚度，优化了基于PiG的WLED的光学性能。在150μm的膜厚度下，制造的WLED可获得超高的彩色显色指数（CRI）值（R a = 95.4，R 9 = 95.1和R 13 = 97.3）和保真度/色域指数值（R f = 91和R g= 102）。相应的发光效率（LE）和相关色温（CCT）分别为65 lm / W和5260K。在100°C下老化200小时后，与传统的有机硅荧光粉（PiS）基WLED相比，基于PiG的WLED显示出低效率损失和稳定的色彩质量。准备好的PiG是一种宽带稳定的转换器，可为大功率白色照明提供超高的色彩渲染。
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