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Deterministic quasi-random nanostructures for photon control

Author

Listed:
  • Emiliano R. Martins

    (SUPA, School of Physics and Astronomy, University of St Andrews)

  • Juntao Li

    (State Key Laboratory of Optoelectronic Materials and Technology, Sun Yat-sen University)

  • YiKun Liu

    (State Key Laboratory of Optoelectronic Materials and Technology, Sun Yat-sen University)

  • Valérie Depauw

    (imec, Solar Cells and Modules)

  • Zhanxu Chen

    (State Key Laboratory of Optoelectronic Materials and Technology, Sun Yat-sen University
    School of Electronic and Information, GuangDong Polytechnic Normal University)

  • Jianying Zhou

    (State Key Laboratory of Optoelectronic Materials and Technology, Sun Yat-sen University)

  • Thomas F. Krauss

    (SUPA, School of Physics and Astronomy, University of St Andrews
    University of York)

Abstract

Controlling the flux of photons is crucial in many areas of science and technology. Artificial materials with nano-scale modulation of the refractive index, such as photonic crystals, are able to exercise such control and have opened exciting new possibilities for light manipulation. An interesting alternative to such periodic structures is the class of materials known as quasi-crystals, which offer unique advantages such as richer Fourier spectra. Here we introduce a novel approach for designing such richer Fourier spectra, by using a periodic structure that allows us to control its Fourier components almost at will. Our approach is based on binary gratings, which makes the structures easy to replicate and to tailor towards specific applications. As an example, we show how these structures can be employed to achieve highly efficient broad-band light trapping in thin films that approach the theoretical (Lambertian) limit, a problem of crucial importance for photovoltaics.

Suggested Citation

  • Emiliano R. Martins & Juntao Li & YiKun Liu & Valérie Depauw & Zhanxu Chen & Jianying Zhou & Thomas F. Krauss, 2013. "Deterministic quasi-random nanostructures for photon control," Nature Communications, Nature, vol. 4(1), pages 1-7, December.
    • Handle: RePEc:nat:natcom:v:4:y:2013:i:1:d:10.1038_ncomms3665
    DOI: 10.1038/ncomms3665
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