One-dimensional excitons in inorganic-organic self-organized quantum-wire crystals [NH2C(I) = NH2]3PbI5 and [CH3SC( = NH2)NH2]3PbI5

Kenichiro Tanaka, Ryuichi Ozawa, Tsutomu Umebayashi, Keisuke Asai, Kazuhiro Ema, Takashi Kondo

Research output: Contribution to journalArticlepeer-review

21 Citations (Scopus)


Optical properties of lead-iodide-based one-dimensional perovskite-type crystals [NH2C(I) = NH2]3PbI5 and [CH3SC( = NH2)NH2]3PbI5 have been investigated theoretically and experimentally. The electronic and excitonic structures are studied based on group theoretical consideration and first-principle band calculation. Strong one-dimensional anisotropy of the optical absorption spectra, large Stokes shifts (∼ 1.0 eV) and huge exchange energies (∼ 70 meV) indicate that the excitons in these crystals are one-dimensional Frenkel excitons.

Original languageEnglish
Pages (from-to)378-383
Number of pages6
JournalPhysica E: Low-Dimensional Systems and Nanostructures
Issue number4
Publication statusPublished - 2005 Jan


  • Exchange interaction
  • Excitons
  • Quantum wire

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Condensed Matter Physics

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