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Solid-solid phase transitions of organic-inorganic perovskite hybrids

  • Journal of the Korean Crystal Growth and Crystal Technology
  • Abbr : J. Korean Cryst. Growth Cryst. Technol.
  • 2005, 15(2), pp.86-91
  • Publisher : The Korea Association Of Crystal Growth, Inc.
  • Research Area : Engineering > Materials Science and Engineering

Young Duk Huh 1 Ji Hyun Kim 1

1단국대학교

Accredited

ABSTRACT

The layered structure of organic-inorganic perovskite hybrids, (CnH2n + 1NH3)2CuCl4 (n = 6, 8, 10, 12) have synthesized. In (CnH2n + 1NH3)2CuCl4 compounds, the long-chain protonated alkylammonium ions as tilted bilayer type are inserted into perovskite-type layers of corner sharing CuCl6 octahedron. Three solid phases have been characterized in the perovskite layered compound (CnH2n + 1NH3)2CuCl4 using HT-XRD and DSC. The (CnH2n + 1NH3)2CuCl4 compounds shows solid-solid phase transitions with stepwise increasing of the layer distance. Three different structures are explained by the conformational change of the long-chain protonated alkylammonium ions.

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