Design of anti-ring back reflectors for thin-film solar cells based on three-dimensional optical and electrical modeling

Hui Hsin Hsiao, Hung Chun Chang, Yuh Renn Wu

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The optical and electrical properties of a photonic-plasmonic nanostructure on the back contact of thin-film solar cells were investigated numerically through the three-dimensional (3D) finite-difference time-domain method and the 3D Poisson and drift-diffusion solver. The focusing effect and the Fabry-Perot resonances are identified as the main mechanisms for the enhancement of the optical generation rate as well as the short circuit current density. However, the surface topography of certain nanopattern structures is found to reduce the internal electrostatic field of the device, thus limiting charge collection. The optimized conditions for both optics and electronics have been analyzed in this paper.

Original languageEnglish
Article number061108
JournalApplied Physics Letters
Issue number6
Publication statusPublished - Aug 11 2014
Externally publishedYes


ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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