All-Back-Contact Perovskite Solar Cells Using Cracked Film Lithography

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5 Scopus Citations


All-back-contact perovskite solar cells promise greater power conversion efficiency compared to conventional planar device architectures. However, the best-performing devices to date use photolithography to fabricate electrodes, which is expensive for deployment and a barrier for research facilities. Herein, we utilize cracked film lithography, a solution-processed micropatterning technique, to form an interconnected, defect-tolerant back-contact electrode network. We introduce a crack widening technique to control the optical transparency and sheet resistance while decoupling the relative areas of the electron and hole contacts in the back-contact network. Wider cracks increase the area of the hole-selective contact, which increases photocurrent and power conversion efficiency.

Original languageAmerican English
Pages (from-to)9273-9279
Number of pages7
JournalACS Applied Energy Materials
Issue number8
StatePublished - 2022

Bibliographical note

Publisher Copyright:
© 2022 American Chemical Society. All rights reserved.

NREL Publication Number

  • NREL/JA-5900-82711


  • all-back-contact
  • back-contact electrodes
  • cracked-film lithography
  • perovskite
  • quasi-interdigitated
  • scalable fabrication
  • solar cells


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