Charge-transfer induced surface conductivity for a copper based inorganic-organic hybrid

Abstract

Inorganic-organic hybrids are receiving increasing attention as they offer the opportunity to combine the robust properties of inorganic materials with the versatility of organic compounds. We have studied the electric properties of an inorganic-organic hybrid with the chemical formula: CuCl4(C6H5CH2CH2NH3)2. This material is a ferromagnetic insulator that can easily be processed from solution. We show that the surface conductivity of the hybrid can be increased by five orders of magnitude by covering the surface with an organic electron donor. This constitutes a novel method to dope perovskite-based materials and study their charge transport properties.

Low-frequency Raman study of the ferroelectric phase transition in a layeredCuCl4-based organic-inorganic hybrid

“…58 The inorganic CuCl 6 octahedra share corners to form two-dimensional sheets separated by a bilayer of organic molecules, here phenylethylammonium (PEA). 5,59 At 100 K, x-ray-diffraction data suggested that the nonpolar P bca space group (D 15 2h ) is adopted. However, pyroelectric current measurements have shown that PEACuCl is polar below 340 K, hence, the actual space group must be polar.…”

Dielectric and Raman investigations of structural phase transitions in (C2H5NH3)2CdCl4

“…Hybrid organic-inorganic perovskite materials are few of the most extensively studied crystalline hybrid compounds, by virtue of their multifunctional behaviour and potential applications [1][2][3][4][5][6][7] . They consist of a wide range of inorganic anion chains (an extended network of corner-sharing metal oxide or halide complexes), alternating with large variety of organic cations as building blocks.…”

Ionic dynamics of the cation in organic–inorganic hybrid compound (CH3NH3)2MCl4(M = Cu and Zn) by1H MAS NMR,13C CP MAS NMR, and14N NMR

“…Our data are analyzed assuming T 1r shows a minimum when u C s C ¼ 1 and the BPP relation between T 1r and u 1 is applicable. As the T 1r curves are found to exhibit minima, it was possible to determine the coefficient, 0.05(m o /4p) 2…”

“…Hybrid organic-inorganic compounds have been known since 1976 but recently they have been revisited due to their potential use as substitute materials for perovskites. [1][2][3][4][5][6] Metal complexes with the formula (CH 3 NH 3 ) 2 MCl 4 (M ¼ Mn, Fe, Cu, Zn, Cd) can be classied into two groups from a crystal structure point of view. [7][8][9][10][11][12][13][14] One group (CH 3 NH 3 ) 2 MCl 4 (M ¼ Mn, Fe, Cd) has a perovskite-type layer structure consisting of cationic layers and layers of corner-sharing chlorine octahedra with a divalent metal ion at the center.…”