Search
Menu
Zurich Instruments AG - Boost Your Optics 1-24 LB

Spreading Out Laterally Enables a Phosphor-Free White LED

Facebook X LinkedIn Email
Hank Hogan

Conventional white LEDs are actually blue or ultraviolet sources, with added phosphor shifting the light to white. However, the converter degrades over time, the wavelength shifting is inefficient, and the packaging steps are complex. Researchers, therefore, have been looking into how to build a phosphor-free white LED. One approach has involved stacked blue and green multiple quantum wells constructed out of InGaN and GaN. Unfortunately, the ratio of blue to green often changes with the injection current, leading to a white light that changes hue significantly. Now a group from Gwangju...Read full article

Related content from Photonics Media



    Articles


    Products


    Photonics Handbook Articles


    White Papers


    Webinars


    Photonics Dictionary Terms


    Media


    Photonics Buyers' Guide Categories


    Companies
    Published: May 2008
    Featuresphosphor-free white LEDspectroscopyultraviolet sourceswhite LEDs

    We use cookies to improve user experience and analyze our website traffic as stated in our Privacy Policy. By using this website, you agree to the use of cookies unless you have disabled them.