Tailoring of Electron-Collecting Oxide Nanoparticulate Layer for Flexible Perovskite Solar Cells

Seong Sik Shin, Woon Seok Yang, Eun Joo Yeom, Seon Joo Lee, Nam Joong Jeon, Young Chang Joo, Ik Jae Park, Jun Hong Noh, Sang Il Seok

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59 Citations (Scopus)

Abstract

Low-temperature-processed perovskite solar cells (PSCs), especially those fabricated on flexible substrates, exhibit device performance that is worse than that of high-temperature-processed PSCs. One of the main reasons for the inferior performance of low-temperature-processed PSCs is the loss of photogenerated electrons in the electron collection layer (ECL) or related interfaces, i.e.; indium tin oxide/ECL and ECL/perovskite. Here, we report that tailoring of the energy level and electron transporting ability in oxide ECLs using Zn2SnO4 nanoparticles and quantum dots notably minimizes the loss of photogenerated electrons in the low-temperature-fabricated flexible PSC. The proposed ECL with methylammonium lead halide [MAPb(I0.9Br0.1)3] leads to fabrication of significantly improved flexible PSCs with steady-state power conversion efficiency of 16.0% under AM 1.5G illumination of 100 mW cm-2 intensity. These results provide an effective method for fabricating high-performance, low-temperature solution-processed flexible PSCs.

Original languageEnglish
Pages (from-to)1845-1851
Number of pages7
JournalJournal of Physical Chemistry Letters
Volume7
Issue number10
DOIs
Publication statusPublished - 2016 May 19
Externally publishedYes

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ASJC Scopus subject areas

  • Materials Science(all)

Cite this

Shin, S. S., Yang, W. S., Yeom, E. J., Lee, S. J., Jeon, N. J., Joo, Y. C., Park, I. J., Noh, J. H., & Seok, S. I. (2016). Tailoring of Electron-Collecting Oxide Nanoparticulate Layer for Flexible Perovskite Solar Cells. Journal of Physical Chemistry Letters, 7(10), 1845-1851. https://doi.org/10.1021/acs.jpclett.6b00295