Broad-band anti-reflection coupler for a: SSSi thin-film solar cell

Shih Shou Lo, Chii Chang Chen, Frank Garwe, Thomas Pertch

Research output: Contribution to journalArticlepeer-review

47 Scopus citations


This work numerically demonstrates a new anti-reflection coupler (ARC) with high coupling efficiency in a Si substrate solar cell. The ARC in which the grating is integrated on a glass encapsulation and a three-layer impedance match layer is proposed. A coupling efficiency of 90% is obtained at wavelengths between 350 and 1200 nm in the TE and TM modes when the incident angle is less than 30°. In comparison with a 1νm absorber layer, the integrated absorption of an a-Si thin-film solar cell without a new ARC is doubled, at long wavelengths (750 nm ≤ λ ≤ 1200 nm), as calculated by FDTD method.

Original languageEnglish
Article number010
Pages (from-to)754-758
Number of pages5
JournalJournal of Physics D: Applied Physics
Issue number3
StatePublished - 7 Feb 2007


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