High-Brightness White-Light Source Based on Up-Conversion Phosphors

    Authors

    J. Milliez; A. Rapaport; M. Bass; A. Cassanho;H. P. Jenssen

    Comments

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    Abbreviated Journal Title

    J. Disp. Technol.

    Keywords

    Displays; fluorescence spectroscopy; light sources; luminescence; optical frequency up-conversion (UC); optical scattering; rare earth; (RE) compounds; Engineering, Electrical & Electronic; Optics; Physics, Applied

    Abstract

    We report the implementation of a new, high brightness, high efficiency white-light source based on up-conversion phosphors. Up-conversion materials absorb near infrared light and re-emit in red, green, and blue. It is possible to combine these colors to create a white-light source. Such a source has the same appealing characteristics as those reported for up-conversion displays: very high brightness operation without damage to the emitters, long lifetimes, and efficiencies comparable to those of existing technologies. In addition, they offer simplicity of fabrication and a variety of operating modes. Here we demonstrate a 7-lm/W D65 white light emitter yielding 2 kcd/m(2) on a simple diffuser.

    Journal Title

    Journal of Display Technology

    Volume

    2

    Issue/Number

    3

    Publication Date

    1-1-2006

    Document Type

    Article

    Language

    English

    First Page

    307

    Last Page

    311

    WOS Identifier

    WOS:000207089500014

    ISSN

    1551-319X

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