Down Converter Device Combining Rare-Earth Doped Thin Layer and Photonic Crystal for c-Si Based Solar Cell - Cellule Energie du CNRS
Communication Dans Un Congrès Année : 2013

Down Converter Device Combining Rare-Earth Doped Thin Layer and Photonic Crystal for c-Si Based Solar Cell

Thierry Deschamps
Emmanuel Drouard
Romain Peretti
Loïc Lalouat
  • Fonction : Auteur
  • PersonId : 941823
Erwann Fourmond
Alain Fave
Antoine Guille
  • Fonction : Auteur
  • PersonId : 948928
Bernard Moine
  • Fonction : Auteur
  • PersonId : 830489
Christian Seassal

Résumé

The aim of the study is to develop ultra-compact structures enabling an efficient conversion of single high energy photon (UV) to two lower energy photons (IR). The proposed structure combines rare-earths doped thin layer allowing the down-conversion process with a photonic crystal (PhC), in order to control and enhance the down-conversion using optical resonances. On the top of the rare-earths doped layer, a silicon nitride (SiN) 2D planar PhC is synthesized. For that, SiN is first deposited by PECVD. After holographic lithography and reactive ion etching, a periodic square lattice of holes is generated on the SiN layer. The PhC topographical parameters as well as the layers thickness are optimized using Finite-Difference-Time-Domain simulations. The design and realization of such PhC-assisted down-converter structures is presented. Optical simulations demonstrate that the PhC leads to the establishment of resonant modes located in the underneath doped layer, allowing a drastic enhancement of the absorption of the rare-earth ions without disturbing the transmission in the visible and near-IR parts of the spectrum, hence demonstrating the relevance of such an approach.
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Dates et versions

hal-00908631 , version 1 (25-11-2013)

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Thierry Deschamps, Emmanuel Drouard, Romain Peretti, Loïc Lalouat, Erwann Fourmond, et al.. Down Converter Device Combining Rare-Earth Doped Thin Layer and Photonic Crystal for c-Si Based Solar Cell. 28th European Photovoltaic Solar Energy Conference and Exhibition, Sep 2013, Paris, France. pp.43 - 45, ⟨10.4229/28thEUPVSEC2013-1BO.11.2⟩. ⟨hal-00908631⟩
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