On the Adjustment of the Color Temperature of White Light-Emitting Diodes by Femtosecond Laser Patterning

F P Wenzl,Ladislav Kuna,Christian Sommer,Frank Reil,Joachim R Krenn,Peter Pachler,Paul Hartmann

IEEE Photonics Technology Letters（2011）

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摘要

We show that femtosecond (fs) laser microstructuring of light-emitting diode (LED) encapsulates has a high potential for the fine-tuning of the color temperatures of white LED packages. The number of scattering centers that are fabricated within the volume of the encapsulate allows the precise adjustment of the color temperature of the device to the desired value. This opens possibilities to achie...

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关键词

Light emitting diodes,Color,Phosphors,Materials,Optical device fabrication,Scattering,Ultrafast optics

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