Calibrated Dielectric Fiber Arrays for Light-Trapping Enhancement in Organic Solar Cells

Khai Q. Le, Matthew Nixon, Jing Bai

Research output: Contribution to journalArticlepeer-review

5 Scopus citations


A numerical investigation of an array consisting of SiO2 fibers to generate whispering gallery modes (WGMs) and lensing effects atop an organic solar cell (OSC) to enhance optical absorption efficiency is reported. SiO 2 fibers calibrated to generate the optimal WGM resonator (WGMR) and antireflection coating for broadband light account for increases in integrated absorption up to 16% when compared with its flat-OSC counterpart. The overall absorption, using AM1.5 G (air mass 1.5 global) spectra, yields absorption efficiencies of 60% in an optimal configuration with a cell size of 600 nm and fiber radius of 200 nm. Using fibers like the WGMR and antireflector, it is seen that there is a broadband absorption over all wavelengths, except for 380-400 nm, when using this substrate.

Original languageEnglish (US)
Article number7106565
Pages (from-to)1125-1129
Number of pages5
JournalIEEE Journal of Photovoltaics
Issue number4
StatePublished - Jul 1 2015

Bibliographical note

Publisher Copyright:
© 2011-2012 IEEE.


  • Fiber optics
  • organic materials
  • photovoltaic cells
  • whispering gallery modes


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