Organic / inorganic quantum confinement structures based on lead halide perovskites

Y. Tabuchi, K. Asai, M. Rikukawa, K. Sanui, K. Ishigure

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)

Abstract

Thin films of two-dimensional layered perovskite compounds (RNH3)2(CH3NH3)m-1 PbmX3m+1(X = Cl, Br and I; m = 1 - 3), which have multilayer quantum wells, were systematically prepared. X-ray diffraction patterns demonstrated that the control of the inorganic layer thickness was achieved in all the halogen systems. These layered perovskite films showed a strong, clear exciton absorption peak. The exciton peak shifted to lower energy as the halogen in the structure was changed from Cl, Br to I. This is due to the difference in the band gap energy. Moreover, with the increasing numbers of inorganic layers, a red shift in the exciton peak was observed.

Original languageEnglish
Pages (from-to)449-454
Number of pages6
JournalMolecular Crystals and Liquid Crystals Science and Technology Section B: Nonlinear Optics
Volume25
Issue number1-4
Publication statusPublished - 2000 Dec 1
Externally publishedYes

Keywords

  • Perovskite-type compounds
  • Quantum wells

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Condensed Matter Physics

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