Structural and optical properties of some natural three-and lower-dimensional layered perovskite-type compounds

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

Research output: Contribution to journalConference article

1 Citation (Scopus)

Abstract

Thin films of three- and two-dimensional layered perovskite compounds (C6H13NH3)2(CH3 NH3)m-1PbmBr3m+1 (m=1, 2, 3 and ∞), were systematically prepared. X-ray diffraction patterns clearly demonstrated that the spin-coated film was highly oriented with the c-axis perpendicular to the substrate surfaces and that the control of the inorganic layer thickness in layered perovskites can be achieved by changing the ratio of the two organic amines (C6H13NH3 / CH3NH3). The two-dimensional layered perovskite films showed a strong, clear exciton absorption peak due to their large exciton binding energy. With increasing numbers of inorganic layers, a red shift of the exciton absorption was observed due to the decrease in transfer energy. Room temperature photoluminescence exhibits a pronounced spectral peak in the visible range with the peak wavelength varying between 404, 437, and 459 nm for (C6H13NH3)2(CH3 NH3)m-1PbmBr3m+1 (m=1, 2 and 3) compounds, respectively.

Original languageEnglish
Pages (from-to)57-62
Number of pages6
JournalMolecular Crystals and Liquid Crystals Science and Technology Section B: Nonlinear Optics
Volume24
Issue number1-2
Publication statusPublished - 2000 Dec 1
Externally publishedYes
EventChitose Internatinal Forum on Photonic Sciences - Chitose, Japan
Duration: 1999 Oct 121999 Oct 13

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Condensed Matter Physics

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