Physicochemical and Electrocatalytic Performance of Chromium doped Iron Pyrite Thin Films
| Autor: | P. Prabukanthan, M. Sreedhar, G. Harichandran, T. Tatarchuk, K. Dinakaran, S. Uthayakumar, A. Younis |
|---|---|
| Jazyk: | English<br />Ukrainian |
| Rok vydání: | 2022 |
| Předmět: | |
| Zdroj: | Фізика і хімія твердого тіла, Vol 23, Iss 1, Pp 134-143 (2022) |
| Druh dokumentu: | article |
| ISSN: | 1729-4428 2309-8589 |
| DOI: | 10.15330/pcss.23.1.134-143 |
| Popis: | Chromium (Cr3+) doped iron pyrite (FeS2) thin films were deposited on ITO substrate by a facile electrochemical deposition process. The effect of chromium content on structural, optical, electrical, morphological, and electrocatalytic behavior of the pyrite thin films were examined. X - ray diffraction studies confirmed the formation of cubic crystal structure of deposited thin films. Atomic force microscopy results indicate that Cr3+ doping has strong influence on crystallinity, surface roughness and grain size of as-deposited thin films. Further, bandgap reduction was found in Cr3+ doped FeS2 thin films. The interfacial charge resistance of fabricated thin films was investigated by electrochemical impedance spectroscopy and 3 mole % Cr3+ doped FeS2 thin films showed excellent conductivity with a low charge transfer resistance of 49 Ω. Further, the electrocatalytic performance of the prepared pyrite thin films was investigated. Cr doped thin films were found to exhibit better performance. Anti-structural modeling was opted to investigate the characteristics of defects in fabricated thin films and it was established that Cr3+substitutionmay form cation (Fe2+) vacancies which could be responsible for enhanced photochemical and electrochemical activities in Cr-doped FeS2 thin films. |
| Databáze: | Directory of Open Access Journals |
| Externí odkaz: |
|