Light-Emitting Materials, Devices, and Technologies

Enhancement of quality of downconverted white light

[+] Author Affiliations
Debasis Bera

University of Florida, Department of Materials Science and Engineering, Gainesville, Florida 32611-6400

Sergey Maslov

University of Florida, Department of Materials Science and Engineering, Gainesville, Florida 32611-6400

Lei Qian

University of Florida, Department of Materials Science and Engineering, Gainesville, Florida 32611-6400

Paul H. Holloway

University of Florida, Department of Materials Science and Engineering, Gainesville, Florida 32611-6400

J. Photon. Energy. 1(1), 016501 (March 14, 2011). doi:10.1117/1.3555421
History: Received June 24, 2010; Revised December 08, 2010; Accepted January 25, 2011; Published March 14, 2011; Online March 14, 2011
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High-quality downconverted white light is important for many applications ,including general illumination. Downconversion of blue light from inorganic InGaN-based light emitting diodes to produce white light is demonstrated using red- and green-emitting phosphors. After characterization, films of the phosphors are prepared by mixing the powder into a polymethyl methacrylate host. The quality of light is improved and optimized by varying the weight ratio of green to red phosphors and the thickness of the phosphor layer.

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© 2011 Society of Photo-Optical Instrumentation Engineers (SPIE)

Citation

Debasis Bera ; Sergey Maslov ; Lei Qian and Paul H. Holloway
"Enhancement of quality of downconverted white light", J. Photon. Energy. 1(1), 016501 (March 14, 2011). ; http://dx.doi.org/10.1117/1.3555421


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