Application of luminescence downshifting materials for enhanced stability of CH3NH3PbI3(1-x)Cl3x perovskite photovoltaic devices

Helder Scapin Anizelli, Vasil Stoichkov, Ricardo Vignoto Fernandes, José Leonil Duarte, Edson Laureto, Jeff Kettle, Iris Visoly-Fisher, Eugene A. Katz

Research output: Contribution to journalArticlepeer-review

19 Scopus citations

Abstract

The application of luminescent down shifting (LDS) layers as alternative UV filters for CH3NH3PbI3(1-x)Cl3x perovskite solar cell (PSC) devices is reported. A combination of photo-absorption measurements and of device decay measurements during light soaking are used to verify the stability. The application of a UV filter or LDS layer was able to significantly retard photo-induced degradation with ∼18% drop in device power conversion efficiency (PCE) observed over 30 h for non-encapsulated devices, which is compared to ∼97% for an un-filtered device, also without encapsulation. Whilst the PCE of the PSC device decreases with the application of the LDS layer, the drop is not as significant as when a commercial UV filter is used. Considering that UV filters will be essential for the commercialization of PSCs, the work provides evidence that the LDS layer can act as an alternative UV filter in PSCs and can limit the drop in PCE that can be expected from the inclusion of a UV filter, thus providing an added benefit over commercial UV filters.

Original languageEnglish
Pages (from-to)129-134
Number of pages6
JournalOrganic Electronics
Volume49
DOIs
StatePublished - 1 Oct 2017

Keywords

  • Degradation
  • Luminescence downshifting
  • Perovskite
  • Solar cells
  • Stability

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Biomaterials
  • Chemistry (all)
  • Condensed Matter Physics
  • Materials Chemistry
  • Electrical and Electronic Engineering

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