Calculated optical absorption of different perovskite phases

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Abstract

We present calculations of the optical properties of a set of around 80 oxides, oxynitrides, and organometal halide cubic and layered perovskites (Ruddlesden-Popper and Dion-Jacobson phases) with a bandgap in the visible part of the solar spectrum. The calculations show that for different classes of perovskites the solar light absorption efficiency varies greatly depending not only on bandgap size and character (direct/indirect) but also on the dipole matrix elements. The oxides exhibit generally a fairly weak absorption efficiency due to indirect bandgaps while the most efficient absorbers are found in the classes of oxynitride and organometal halide perovskites with strong direct transitions.
Original languageEnglish
JournalJournal of Materials Chemistry A
Volume3
Issue number23
Pages (from-to)12343-12349
Number of pages7
ISSN2050-7488
DOIs
Publication statusPublished - 2015

Keywords

  • CHEMISTRY
  • ENERGY
  • MATERIALS
  • SENSITIZED SOLAR-CELLS
  • CUBIC PEROVSKITES
  • EFFICIENCY
  • SILICON
  • PHOTOCATHODE
  • CAPTURE
  • Electromagnetic wave absorption
  • Energy gap
  • Lanthanum compounds
  • Optical properties
  • Perovskite
  • Dion-Jacobson phasis
  • Dipole matrix elements
  • Direct transition
  • Efficient absorbers
  • Halide perovskites
  • Layered perovskite
  • Perovskite phasis
  • Ruddlesden-Popper
  • Light absorption

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