Characterization of organic–inorganic hybrid layered perovskite and intercalated compound (n-C₁₂H₂₅NH₃)₂ZnCl₄

Abstract

We report on some electrical properties and solid–solid phase transitions of organic–inorganic hybrid layered halide perovskite and intercalated compound (n-C₁₂H₂₅NH₃)₂ZnCl₄ which is one member of the long-chain compounds of the series (n-C_nH_2n+1NH₃)_2,(n = 8–18). The complex dielectric permittivity ϵ*(ω,T) and the ac conductivity σ (ω,T) were measured as functions of temperature 100 K < T < 390 K and frequency 5 kHz < f < 100 kHz. Moreover, the differential scanning calorimetery and the differential thermal analysis thermograms were performed. The analysis of our data confirms the existence of a structural phase transition at T ≈ (362 ± 2) K, where the compound changes its state from intercalation to non-intercalation with a drastic increase in the c-axis by about 16.4%.

The behavior of the frequency-dependent conductivity follows the Jonscher universal power law: σ (ω, T) αῳ^s(ῳ,T). The mechanism of electrical conduction in the low-temperature phase (phase II) can be described as quantum mechanical tunneling model.

Keywords:

• organic–inorganic hybrid perovskites
• intercalation compounds
• (n-C₁₂H₂₅NH₃)₂ ZnCl₄
• dielectric properties
• thermal parameters

PACS:

• 66
• 67,77.22Ch
• 77.80Bh

Disclosure statement

No potential conflict of interest was reported by the authors.