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Article Dans Une Revue Nature Energy Année : 2020

Photochromic dye-sensitized solar cells with light-driven adjustable optical transmission and power conversion efficiency

Quentin Huaulmé
  • Fonction : Auteur
Valid M Mwalukuku
  • Fonction : Auteur
Damien Joly
  • Fonction : Auteur
Johan Liotier
Yann Kervella
  • Fonction : Auteur
Pascale Maldivi
Stéphanie Narbey
  • Fonction : Auteur
Frédéric Oswald
  • Fonction : Auteur
Antonio J Riquelme
Juan Antonio Anta
  • Fonction : Auteur

Résumé

Semi-transparent photovoltaics only allow for the fabrication of solar cells with an optical transmission that is fixed during their manufacturing resulting in a trade-off between transparency and efficiency. For the integration of semi-transparent devices in buildings, ideally solar cells should generate electricity while offering the comfort for users to self-adjust their light transmission with the intensity of the daylight. Here we report photochromic dye-sensitized solar cells (DSSCs) based on dyes with a donor-π-conjugated-bridge-acceptor structure where the π-conjugated bridge is substituted by a diphenyl-naphthopyran photochromic unit. DSSCs show change in colour and self-adjustable light transmittance when irradiated and demonstrate a power conversion efficiency up to 4.17%. The colouration–decolouration process is reversible and these DSSCs are stable over 50 days. We also report semi-transparent photo-chromo-voltaic mini-modules (active area of 14 cm²) exhibiting a maximum power output of 32.5 mW after colouration.
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Dates et versions

hal-03183318 , version 1 (21-04-2022)

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Quentin Huaulmé, Valid M Mwalukuku, Damien Joly, Johan Liotier, Yann Kervella, et al.. Photochromic dye-sensitized solar cells with light-driven adjustable optical transmission and power conversion efficiency. Nature Energy, 2020, 5, pp.468 - 477. ⟨10.1038/s41560-020-0624-7⟩. ⟨hal-03183318⟩
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