Nitride-based LEDs with high-reflectance and wide-angle ag mirror+SiO 2/TiO2 DBR backside reflector

Nan Ming Lin, Shih Chang Shei, Shoou Jinn Chang

Research output: Contribution to journalArticlepeer-review

17 Citations (Scopus)


Nitride-based light-emitting diodes (LEDs) with a backside reflector combining a SiO2/TiO2 distributed Bragg reflector (DBR) and an Ag mirror were simulated and fabricated. With combining the three-pair SiO2/TiO2 DBR and an Ag mirror, it was found that we can significantly enhance the 96% reflectance of Ag mirror to 99.1% with an incident angle of 0°. Furthermore, reflectance of the proposed reflector depends slightly on incident light wavelength and the incident angle. With 350-mA current injection, it was found that the output powers were 122, 138, 153, 156, and 162 mW for the LEDs without reflector, with an Al mirror, with Al+3DBR mirror, with an Ag mirror, and with Ag+3DBR mirror, respectively.

Original languageEnglish
Article number5708156
Pages (from-to)1033-1038
Number of pages6
JournalJournal of Lightwave Technology
Issue number7
Publication statusPublished - 2011

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics


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