Chakchouk N, Brahim KB, Gzaiel MB, Oueslati A. Investigation of optical and electrical properties of the semiconducting α-KZnPO
4 compound.
RSC Adv 2022;
12:6831-6840. [PMID:
35424600 PMCID:
PMC8981540 DOI:
10.1039/d2ra00426g]
[Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2022] [Accepted: 02/23/2022] [Indexed: 11/23/2022] Open
Abstract
We used the solid state method to synthesize the α-KZnPO4 compound. The X-ray diffraction pattern revealed that the sample represents a single hexagonal phase with a P63 space group. The chemical composition of the compound was examined by energy dispersive spectroscopy. The optical absorption measurement confirmed the semiconductor nature of the compound with a band gap around 4.52 eV. Furthermore, the electrical properties of the material were analyzed by means of the impedance spectroscopy, in a frequency range from 100 Hz to 1 MHz and a temperature range from 583 K to 673 K. The dependency of s(T) on temperature showed that the overlapping large polaron tunneling model is the mechanism responsible for AC conduction in the compound. A correlation between the crystal structure and the ionic conductivity was established and discussed. Finally, the temperature variation of M′′ peak showed a thermally activated relaxation process and a temperature-dependent stretching exponent β parameter.
We used the solid state method to synthesize the α-KZnPO4 compound.![]()
Collapse