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Nano Research

, Volume 10, Issue 6, pp 2130–2145 | Cite as

Efficient light harvesting from flexible perovskite solar cells under indoor white light-emitting diode illumination

  • Giulia Lucarelli
  • Francesco Di Giacomo
  • Valerio Zardetto
  • Mariadriana Creatore
  • Thomas M. BrownEmail author
Research Article

Abstract

This is the first report of an investigation on flexible perovskite solar cells for artificial light harvesting by using a white light-emitting diode (LED) lamp as a light source at 200 and 400 lx, values typically found in indoor environments. Flexible cells were developed using either low-temperature sol–gel or atomic-layer-deposited compact layers over conducting polyethylene terephthalate (PET) substrates, together with ultraviolet (UV)-irradiated nanoparticle TiO2 scaffolds, a CH3NH3PbI3–xClx perovskite semiconductor, and a spiro-MeOTAD hole transport layer. By guaranteeing high-quality carrier blocking (via the 10–40 nm-thick compact layer) and injection (via the nanocrystalline scaffold and perovskite layers) behavior, maximum power conversion efficiencies (PCE) and power densities of 10.8% and 7.2 μW·cm–2, respectively, at 200 lx, and 12.1% and 16.0 μW·cm–2, respectively, at 400 lx were achieved. These values are the state-of-the-art, comparable to and even exceeding those of flexible dye-sensitized solar cells under LED lighting, and significantly greater than those for flexible amorphous silicon, which are currently the main flexible photovoltaic technologies commercially considered for indoor applications. Furthermore, there are significant margins of improvement for reaching the best levels of efficiency for rigid glass-based counterparts, which we found was a high of PCE ~24% at 400 lx. With respect to rigid devices, flexibility brings the advantages of being low cost, lightweight, very thin, and conformal, which is especially important for seamless integration in indoor environments.

Keywords

flexible perovskite solar cells indoor light harvesting atomic layer deposition nanocrystalline scaffolds flexible photovoltaics energy harvesting 

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Notes

Acknowledgements

Thanks are due to Tadeo Pontecorvo and Francesca De Rossi for the indoor set-up and useful discussions. We thank MIUR for PRIN 2012 AQUASOL (2012A4Z2RY) project, “Polo Solare Organico” Regione Lazio for financial support.

Supplementary material

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Efficient light harvesting from flexible perovskite solar cells under indoor white light-emitting diode illumination

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Copyright information

© Tsinghua University Press and Springer-Verlag Berlin Heidelberg 2016

Authors and Affiliations

  • Giulia Lucarelli
    • 1
  • Francesco Di Giacomo
    • 1
    • 2
  • Valerio Zardetto
    • 3
  • Mariadriana Creatore
    • 3
  • Thomas M. Brown
    • 1
    Email author
  1. 1.Centre for Hybrid and Organic Solar Energy (CHOSE), Department of Electronic EngineeringUniversity of Rome Tor VergataRomeItaly
  2. 2.Holst Centre/TNO - SollianceEindhoventhe Netherlands
  3. 3.Department of Applied PhysicsEindhoven University of TechnologyEindhoventhe Netherlands

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