Using colloidal lithography to fabricate and optimize sub-wavelength pyramidal and honeycomb structures in solar cells

H. L. Chen, S. Y. Chuang, C. H. Lin, Y. H. Lin

Research output: Contribution to journalArticlepeer-review

145 Citations (Scopus)

Abstract

The external quantum efficiency of solar cells can be improved by using texturing pyramid- and honeycomb-like structures with minimum reflection. In this study, we investigated the reflection properties of texturing structures through rigorous coupled-wave analysis and the threedimensional finite-difference time domains (FDTD) method to analyze close-packed texturing structures. We also demonstrate a simple method-combining sub-wavelength-scale monolayer and bilayer polystyrene spheres with a one-step reactive ion etching process-to fabricate optimized pyramid- and honeycomb-shaped antireflection structures, respectively. Thus, sub-wavelength pyramidal and honeycomb-like structures displaying low reflectance were obtained readily without the need for any lithography equipment.

Original languageEnglish
Pages (from-to)14793-14803
Number of pages11
JournalOptics Express
Volume15
Issue number22
DOIs
Publication statusPublished - 2007 Oct 29

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics

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