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Color-converted remote phosphor prototype of a multiwavelength excitable borosilicate glass for white light-emitting diodes

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Chinese Physics B 2012年第9期21卷 579-582页

作者：田华刘技文仇坤宋俊王达健 School of Materials Science and Engineering Tianjin University School of Materials Science and Engineering Tianjin University of Technology Institute of Materials Physics Tianjin University of Technology Tianjin Key Laboratory for Photoelectric Materials&Devices

We report a unique red light-emitting Eu-doped borosilicate glass to convert color for warm white light-emitting diodes. This glass can be excited from 394 nm-peaked near ultraviolet light, 466 nm-peaked blue light, to 534 nm- peaked green light to emit the desired red light with an excellent transmission in the wavelength range of 400-700 nm which makes this glass suitable for color conversion without a great cost of luminous power loss. In particular, when assembling this glass for commercial white light-emitting diodes, the tested results show that the color rendering index is improved to 84 with a loss of luminous power by 12 percent at average, making this variety of glass promising for inorganic ＂remote-phosphor＂ color conversion.

关键词： white light-emitting diodes (WLEDs) color rendering index remote phosphor borosil-icate glass

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Thermal analysis of remote phosphor in LED modules

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Journal of Semiconductors 2013年第5期34卷 38-40页

作者：董明智韦嘉叶怀宇袁长安张国旗 Beijing Research Centre Delft University of Technology DIMES Delft University of TechnologyFeldmannweg 172628 CTDelftthe Netherlands State Key Laboratory of Solid State Lighting Research and Development Center for Semiconductor Lighting Institute of SemiconductorsChinese Academy of Sciences

phosphor plays an important role in LED packages by converting the wavelength of light and achieving specific color. The property and degradation of phosphor are strongly affected by the temperature. Some structural factors have been investigated in this paper and their effects are evaluated. remote phosphor is an effective approach to improve the performance and reliability of LED modules and products. It is a trade-off that the final product design depends on both the thermal performance and the cost.

关键词： LED module remote phosphor thermal management

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Hybrid remote quantum dot/powder phosphor designs for display backlights

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Light(Science & Applications) 2016年第1期5卷 11-19页

作者： Sofie Abe Jonas J Joos Lisa IDJ Martin Zeger Hens Philippe F Smet Department of Inorganic and Physical Chemistry Ghent UniversityGentBelgium Department of Solid State Sciences LumiLabGhent UniversityGentBelgium Center for Nano and Biophotonics Ghent UniversityGentBelgium

Quantum dots are ideally suited for color conversion in light emitting diodes owing to their spectral tunability,high conversion efficiency and narrow emission *** properties are particularly important for display backlights;the highly saturated colors generated by quantum dots justify their higher production ***,we demonstrate the benefits of a hybrid remote phosphor approach that combines a green-emitting europium-doped phosphor with red-emitting CdSe/CdS core/shell quantum *** stacking geometries,including mixed and separate layers of both materials,are studied at the macroscopic and microscopic levels to identify the configuration that achieves maximum device efficiency while minimizing material *** influence of reabsorption,optical outcoupling and refractive index-matching between the layers is evaluated in detail with respect to device efficiency and *** the findings of this study,general guidelines are derived to optimize both the cost and efficiency of CdSe/CdS and other(potentially cadmium-free)quantum dot *** reabsorption of the green and/or red emission is significant compared to the absorption strength for the blue emission of the pumping light emitting diode,the hybrid remote phosphor approach becomes beneficial.

关键词： cost-efficiency lanthanide light emitting diode nanocrystal remote phosphor

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