High Members of the 2D Ruddlesden-Popper Halide Perovskites: Synthesis, Optical Properties, and Solar Cells of (CH3(CH2)3NH3)2(CH3NH3)4Pb5I16

Constantinos C. Stoumpos, Chan Myae Myae Soe, Hsinhan Tsai, Wanyi Nie, Jean Christophe Blancon, Duyen H. Cao, Fangze Liu, Boubacar Traoré, Claudine Katan, Jacky Even, Aditya D. Mohite, Mercouri G. Kanatzidis

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173 Citations (Scopus)

Abstract

Here, we present the fifth member (n = 5) of the Ruddlesden-Popper (CH3(CH2)3NH3)2(CH3NH3)n−1PbnI3n+1 family, which we successfully synthesized in high yield and purity. Phase purity could be clearly determined from its X-ray powder diffraction patterns, which feature the (0k0) Bragg reflections at low 2θ angles. The obtained pure n = 5 compound was confirmed to be a direct band-gap semiconductor with Eg = 1.83 eV. The direct nature of the band gap is supported by density functional theory calculations. Intense photoluminescence was observed at room temperature at 678 nm arising from the band edge of the material. High-quality thin films can be prepared by the hot-casting method from solutions with a pure-phase compound as a precursor. The planar solar cells fabricated with n = 5 thin films demonstrate excellent power-conversion efficiency of 8.71% with an impressive open-circuit voltage of ∼1 V. Our results point to the use of layered perovskites with higher n numbers and pure chemical composition.

Original languageEnglish
Pages (from-to)427-440
Number of pages14
JournalChem
Volume2
Issue number3
DOIs
Publication statusPublished - Mar 9 2017

Keywords

  • DFT calculations
  • Ruddlesden-Popper perovskites
  • crystal structure
  • halide perovskites
  • quantum wells
  • solar cells

ASJC Scopus subject areas

  • Chemistry(all)
  • Biochemistry
  • Environmental Chemistry
  • Chemical Engineering(all)
  • Biochemistry, medical
  • Materials Chemistry

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    Stoumpos, C. C., Soe, C. M. M., Tsai, H., Nie, W., Blancon, J. C., Cao, D. H., Liu, F., Traoré, B., Katan, C., Even, J., Mohite, A. D., & Kanatzidis, M. G. (2017). High Members of the 2D Ruddlesden-Popper Halide Perovskites: Synthesis, Optical Properties, and Solar Cells of (CH3(CH2)3NH3)2(CH3NH3)4Pb5I16. Chem, 2(3), 427-440. https://doi.org/10.1016/j.chempr.2017.02.004