SFX as a low-cost 'Spiro' hole-transport material for efficient perovskite solar cells

Michal Maciejczyk, Aruna Ivaturi, Neil Robertson

Research output: Contribution to journalArticle

47 Citations (Scopus)

Abstract

Four spiro[fluorene-9,9′-xanthene] (SFX) derivatives, SFX-TAD, SFX-TCz, SFX-TPTZ and SFX-MeOTAD have been synthesized for use as hole-transport materials and fully characterized by 1H/13C NMR spectroscopy, mass spectrometry, XRD and DSC. Their thermal, optical and electrochemical properties were investigated. The use of different substituents affects the highest occupied molecular orbital (HOMO) energy level proving the versatility of the central core towards the facile and low-cost preparation of spiro-hole-transport materials. Among the synthesized SFX derivatives, SFX-MeOTAD was employed as hole-transporting material (HTM) and the performance tested in perovskite solar cells with device architecture glass/FTO/compact TiO2/mesoporous Al2O3/CH3NH3PbI3-xClx/HTM/Au. SFX-MeOTAD gave a comparable efficiency to spiro-MeOTAD, demonstrating great potential for use of the SFX family as cost effective and versatile hole conductors facilitating commercialization of perovskite solar cells (PSCs).

LanguageEnglish
Pages4855-4863
Number of pages9
JournalJournal of Materials Chemistry. A
Volume4
Issue number13
DOIs
Publication statusPublished - 2 Mar 2016

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Costs
Xanthenes
Derivatives
Molecular orbitals
Electrochemical properties
Electron energy levels
Nuclear magnetic resonance spectroscopy
Mass spectrometry
Thermodynamic properties
Optical properties
Glass
Perovskite solar cells
fluorene

Keywords

  • SFX
  • spectroscopy
  • perovskite solar cells

Cite this

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SFX as a low-cost 'Spiro' hole-transport material for efficient perovskite solar cells. / Maciejczyk, Michal; Ivaturi, Aruna; Robertson, Neil.

In: Journal of Materials Chemistry. A , Vol. 4, No. 13, 02.03.2016, p. 4855-4863.

Research output: Contribution to journalArticle

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