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    • 5. 发明申请
    • LUMINESCENT CONVERTER FOR A PHOSPHOR-ENHANCED LIGHT SOURCE
    • 荧光增白光源的发光转换器
    • US20120119639A1
    • 2012-05-17
    • US13262873
    • 2010-03-31
    • Cornelia Titia StaatsGerardus Arnoldus Rita Van DijkRene Theodorus WeghWillibrordus Hubertus, Martinus, Maria Van De SpijkerMartinus Petrus Joseph Peeters
    • Cornelia Titia StaatsGerardus Arnoldus Rita Van DijkRene Theodorus WeghWillibrordus Hubertus, Martinus, Maria Van De SpijkerMartinus Petrus Joseph Peeters
    • H01J1/63H01J61/44H01J1/62
    • H01J61/44C09K11/06C09K11/7774H01J61/48H01L33/504
    • The invention relates to a luminescent converter (10, 12) for a phosphor-enhanced light source (100, 102, 104). The luminescent converter comprises a first luminescent material (20) configured for absorbing at least a part of excitation light (hv0) emitted by a light emitter (40, 42) of the phosphor-enhanced light source, and for converting at least a part of the absorbed excitation light into first emission light (hv1) comprising a longer wavelength compared to the excitation light. The luminescent converter further comprising a second luminescent material (30) comprising organic luminescent material (30) and configured for absorbing at least a part of the first emission light emitted by the first luminescent material, and for converting at least a part of the absorbed first emission light into second emission light (hv2) having a longer wavelength compared to the first emission light.An effect of the luminescent converter according to the invention is that the two-step light conversion according to the invention generates a relatively small Stokes shift of the light emitted by the organic luminescent material. The inventors have found that by reducing the Stokes shift of the organic luminescent material, the width of the spectrum of the second emission light is limited to reduce an infrared part in the emission spectrum. As such, the efficiency is improved.
    • 本发明涉及一种用于荧光增强光源(100,102,104)的发光转换器(10,12)。 发光转换器包括第一发光材料(20),其被配置为吸收由荧光增强光源的光发射器(40,42)发射的至少一部分激发光(hv0),并且用于将至少一部分 吸收的激发光成为与激发光相比具有较长波长的第一发射光(hv1)。 所述发光转换器还包括包含有机发光材料(30)的第二发光材料(30),并被配置为吸收由第一发光材料发射的第一发射光的至少一部分,并且用于将至少一部分吸收的第一 与第一发射光相比,具有更长波长的第二发射光(hv2)的发射光。 根据本发明的发光转换器的效果是根据本发明的两步光转换产生由有机发光材料发射的光的相对较小的斯托克斯偏移。 发明人已经发现,通过减少有机发光材料的斯托克斯偏移,第二发射光的光谱的宽度被限制以减少发射光谱中的红外部分。 因此,提高效率。