High-Performance Flexible Perovskite Solar Cells on Ultrathin Glass: Implications of the TCO

Marinus Van Hest, Elisa Link, Jeffrey Christians, Talysa Klein, Benjia Dou, Erin Sanehira, Frank Barnes, Sean Shaheen, Sean Garner, Shuvaraj Ghosh, Arindam Mallick, Durga Basak

Research output: Contribution to journalArticlepeer-review

116 Scopus Citations

Abstract

For halide perovskite solar cells (PSCs) to fulfill their vast potential for combining low-cost, high efficiency, and high throughput production they must be scaled using a truly transformative method, such as roll-to-roll processing. Bringing this reality closer to fruition, the present work demonstrates flexible perovskite solar cells with 18.1% power conversion efficiency on flexible Willow Glass substrates. We highlight the importance of the transparent conductive oxide (TCO) layers on device performance by studying various TCOs. While tin-doped indium oxide (ITO) and indium zinc oxide (IZO) based PSC devices demonstrate high photovoltaic performances, aluminum-doped zinc oxide (AZO) based devices underperformed in all device parameters. Analysis of X-ray photoemission spectroscopy data shows that the stoichiometry of the perovskite film surface changes dramatically when it is fabricated on AZO, demonstrating the importance of the substrate in perovskite film formation.

Original languageAmerican English
Pages (from-to)4960-4966
Number of pages7
JournalJournal of Physical Chemistry Letters
Volume8
Issue number19
DOIs
StatePublished - 5 Oct 2017

Bibliographical note

Publisher Copyright:
© 2017 American Chemical Society.

NREL Publication Number

  • NREL/JA-5K00-70129

Keywords

  • efficiency
  • perovskite solar cells
  • transparent conductive oxides

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