Study of hole-transporter-free perovskite solar cells based on fully printable components

Camellia Raminafshar, Dimitrios Raptis, Mohammad Reza Mohammadi, Panagiotis Lianos

Research output: Contribution to journalArticle

2 Citations (Scopus)
11 Downloads (Pure)

Abstract

Hole-transporter-free perovskite solar cells carrying a carbon back contact electrode provide the possibility of making full printable low cost and stable devices, even though their efficiency is substantially lower than those made in the standard configuration. The present work searched for simple and easy routes for constructing such devices, demonstrating that organic components do enhance device efficiency but only to a level that is not worth the trouble nor the cost. Devices based on a triple mesoporous layer of titania/zirconia/carbon with perovskite infiltration gave an efficiency of 10.7%. After 180 days of storing under ambient conditions, a small loss of efficiency has been observed for a cell made in June, in spite of the fact that in going from June to December, a large increase of the ambient humidity took place, thus verifying the protective effect that the carbon electrode is providing. The addition of spiro-OMeTAD to the hole-transporter-free device resulted in increasing the efficiency by about 10%, a change which is appreciated to be of low importance given the cost of this material. This increase mainly derived from an increase in the current. Devices of different sizes have been constructed by screen printing, using home-made pastes for all the components making the cell scaffold, i.e., for titania, zirconia, and carbon layers.

Original languageEnglish
Article number266
Pages (from-to)1-9
Number of pages9
JournalMicromachines
Volume10
Issue number4
Early online date20 Apr 2019
DOIs
Publication statusPublished - Apr 2019

Keywords

  • Fully-printable components
  • Hole-transporter free
  • Perovskite solar cells

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