We investigate a photon recycling scheme using two-dimensional metallic photonic crystals made of silver to improve the energy efficiency of an incandescent light source. A theoretical framework is presented to analyze the resultant photon-recycled lighting system. Calculation results show that the system can reach a maximum luminous efficiency of 125 lm/W, which is 8 times higher than that of a bare blackbody radiation at 2800 K. The color temperature of the system is calculated to be around 3500 K or below, while the color rendering index is between 68 and 90. These results suggest that a photon-recycled incandescent light source using metallic photonic crystals can be a viable alternative future lighting solution.
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Research Article| September 20 2007
Analysis of photon recycling using metallic photonic crystal
Allan S. P. Chang;
Yong-Sung Kim, Shawn-Yu Lin, Allan S. P. Chang, Jae-Hwang Lee, Kai-Ming Ho; Analysis of photon recycling using metallic photonic crystal. J. Appl. Phys. 15 September 2007; 102 (6): 063107. https://doi.org/10.1063/1.2779271
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