Efficiency enhancement of InGaN multi-quantum-well solar cells via light-harvesting SiO 2 nano-honeycombs

P. H. Fu*, G. J. Lin, C. H. Ho, C. A. Lin, C. F. Kang, Y. L. Lai, K. Y. Lai, Jr-Hau He

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

24 Scopus citations


Periodic sub-wavelength SiO 2 nano-honeycombs are fabricated on GaN-based multiple quantum well solar cells by self-assembly polystyrene nanosphere lithography and reactive ion etching. The nano-honeycombs are found to be effective in suppressing the undesired surface reflections over a wide range of wavelengths. Under the illumination of air mass 1.5G solar simulator, conversion efficiency of the solar cell is enhanced by 24.4%. Simulations based on finite-difference time-domain method indicate that the improved performances result from the enhanced optical absorption in the active region due to the reflection suppression and enhanced forward scattering.

Original languageEnglish (US)
Article number013105
JournalApplied Physics Letters
Issue number1
StatePublished - Jan 2 2012

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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