Analysis of photon recycling using metallic photonic crystal

TitleAnalysis of photon recycling using metallic photonic crystal
Publication TypeJournal Article
Year of Publication2007
AuthorsKim YS, Lin SY, Chang ASP, Lee JH, Ho KM
Journal TitleJournal of Applied Physics
Date PublishedSep
Type of ArticleArticle
ISBN Number0021-8979
Accession NumberISI:000249787200007

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.(C) 2007 American Institute of Physics.

Alternate JournalJ. Appl. Phys.