Green energy by recoverable triple-oxide mesostructured perovskite photovoltaics

Avi Schneider, Ariel Efrati, Stav Alon, Maayan Sohmer, Lioz Etgar*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

5 Scopus citations


Perovskite solar cells have developed into a promising branch of renewable energy. A combination of feasible manufacturing and renewable modules can offer an attractive advancement to this field. Herein, a screen-printed three-layered all-nanoparticle network was developed as a rigid framework for a perovskite active layer. This matrix enables perovskite to percolate and form a complementary photoactive network. Two porous conductive oxide layers, separated by a porous insulator, serve as a chemically stable substrate for the cells. Cells prepared using this scaffold structure demonstrated a power conversion efficiency of 11.08% with a high open-circuit voltage of 0.988 V. Being fully oxidized, the scaffold demonstrated a striking thermal and chemical stability, allowing for the removal of the perovskite while keeping the substrate intact. The application of a new perovskite in lieu of a degraded one exhibited a full regeneration of all photovoltaic performances. Exclusive recycling of the photoactive materials from solar cells paves a path for more sustainable green energy production in the future.

Original languageAmerican English
Pages (from-to)31010-31017
Number of pages8
JournalProceedings of the National Academy of Sciences of the United States of America
Issue number49
StatePublished - 8 Dec 2020

Bibliographical note

Funding Information:
ACKNOWLEDGMENTS. We thank the Israel Science Foundation for the financial support through Grants 937/18 and 2552/17. The authors would like to thank Sigalit Aharon for conducting absorbance measurements, Bat-El Cohen for operating the SEM and obtaining images, Shay Tirosh for assisting with EQE measurements, Shimon Eliav from the nanocenter at the Hebrew University for performing Hall effect measurements, and Atzmon Vakahi for operating the FIB.

Publisher Copyright:
© 2020 National Academy of Sciences. All rights reserved.


  • Environmental science
  • Perovskite solar cells
  • Sustainability


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