C60 as an efficient n-type compact layer in perovskite solar cells

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalNot applicablepeer-review

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Author(s)

  • Konrad Wojciechowski
  • Tomas Leijtens
  • Svetlana Siprova
  • Christoph Schlueter
  • Maximilian T. Hörantner
  • Jacob Tse-Wei Wang
  • Chang-Zhi Li
  • Tien-Lin Lee
  • Henry J. Snaith

Detail(s)

Original languageEnglish
Pages (from-to)2399-2405
Journal / PublicationJournal of Physical Chemistry Letters
Volume6
Issue number12
Publication statusPublished - 18 Jun 2015
Externally publishedYes

Abstract

Organic-inorganic halide perovskite solar cells have rapidly evolved over the last 3 years. There are still a number of issues and open questions related to the perovskite material, such as the phenomenon of anomalous hysteresis in current-voltage characteristics and long-term stability of the devices. In this work, we focus on the electron selective contact in the perovskite solar cells and physical processes occurring at that heterojunction. We developed efficient devices by replacing the commonly employed TiO2 compact layer with fullerene C60 in a regular n-i-p architecture. Detailed spectroscopic characterization allows us to present further insight into the nature of photocurrent hysteresis and charge extraction limitations arising at the n-type contact in a standard device. Furthermore, we show preliminary stability data of perovskite solar cells under working conditions, suggesting that an n-type organic charge collection layer can increase the long-term performance.

Research Area(s)

  • fullerene, hysteresis, perovskite solar cell, photoluminescence, power conversion efficiency, stability, X-ray photoelectron spectroscopy

Citation Format(s)

C60 as an efficient n-type compact layer in perovskite solar cells. / Wojciechowski, Konrad; Leijtens, Tomas; Siprova, Svetlana; Schlueter, Christoph; Hörantner, Maximilian T.; Wang, Jacob Tse-Wei; Li, Chang-Zhi; Jen, Alex K.-Y.; Lee, Tien-Lin; Snaith, Henry J.

In: Journal of Physical Chemistry Letters, Vol. 6, No. 12, 18.06.2015, p. 2399-2405.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalNot applicablepeer-review