Biomimetic nanostructured antireflection coating and its application on crystalline silicon solar cells

J. Y. Chen, W. L. Chang, C. K. Huang, Kien-Wen Sun*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

84 Scopus citations

Abstract

In this report, we demonstrate the implementation of biomimetic nanostructured antireflection coatings with polymethyl methacrylate (PMMA) layer on the micro-textured surface of silicon crystalline solar cells. To reduce cost, the process combines colloidal lithography, cast molding method, and reversal nanoimprint lithography. The technique is simple, low cost, and does not cause damage to the thin and brittle conventional crystalline solar cells. The antireflection properties of this biomimetic nanostructure coating are considered as effective as those of a conventional single-layer SiNx thin film. The resultant structures alone could reduce the average reflectance of solar cell from 13.2% to 7.8% and enhance power conversion efficiency from 12.85% to 14.2%.

Original languageEnglish
Pages (from-to)14411-14419
Number of pages9
JournalOptics Express
Volume19
Issue number15
DOIs
StatePublished - 18 Jul 2011

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