CuSCN as Hole Transport Material with 3D/2D Perovskite Solar Cells

Vinod E. Madhavan, Iwan Zimmermann, Ahmer A.B. Baloch, Afsal Manekkathodi, Abdelhak Belaidi, Nouar Tabet, Mohammad Khaja Nazeeruddin

Research output: Contribution to journalArticle

Abstract

We report stable perovskite solar cells having 3D/2D perovskite absorber layers and CuSCN as an inorganic hole transporting material (HTM). (Phenylethyl)ammonium (PEA) and [(4-fluorophenyl)ethyl]ammonium (FPEA) have been chosen as 2D cations, creating thin layers of (PEA)2PbI4 or (FPEA)2PbI4 on top of the 3D perovskite. The 2D perovskite as an interfacial layer, neutralizes defects at the surface of the 3D perovskite absorber, and can protect from moisture-induced degradations. We demonstrate excellent charge extraction through the modified interfaces into the inorganic CuSCN HTM, with device efficiencies above 18%, compared to 19.3% with conventional spiro-OMeTAD. Furthermore, we show significantly enhanced ambient stability.

Original languageEnglish
JournalACS Applied Energy Materials
DOIs
Publication statusAccepted/In press - 1 Jan 2019

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Keywords

  • (phenylethyl)ammonium (PEA)
  • CuSCN
  • hole transporting material (HTM)
  • perovskite-based solar cells (PSCs)
  • power conversion efficiencies (PCEs)
  • [(4-fluorophenyl)ethyl]ammonium (FPEA)

ASJC Scopus subject areas

  • Chemical Engineering (miscellaneous)
  • Energy Engineering and Power Technology
  • Electrochemistry
  • Materials Chemistry
  • Electrical and Electronic Engineering

Cite this

Madhavan, V. E., Zimmermann, I., Baloch, A. A. B., Manekkathodi, A., Belaidi, A., Tabet, N., & Nazeeruddin, M. K. (Accepted/In press). CuSCN as Hole Transport Material with 3D/2D Perovskite Solar Cells. ACS Applied Energy Materials. https://doi.org/10.1021/acsaem.9b01692