| Autor: |
Ilanchezhiyan, P., Mohan Kumar, G., Siva, C., Cho, H.D., Tamilselvan, S., Seal, S., Kang, T.W., Kim, D.Y. |
| Zdroj: |
Journal of Materials Research and Technology; November-December 2020, Vol. 9 Issue: 6 p12585-12594, 10p |
| Abstrakt: |
Owing to their distinct physicochemical traits nanostructured semiconductors continue to find immense potential in energy and environment friendly applications. From this point, SmErxFe1-xO3systems were chemically synthesized and studied in detail for their photoresponse performance and photocatalytic behavior. The material characteristics were initially studied using several analytical tools that include X-ray diffraction (XRD), Raman and microscopic (SEM/TEM) instruments. Substitution of erbium (Er) ions at Fe sites was conceived using X-ray photoelectron spectroscopic (XPS) analysis. Optical band gap and their associated defect states in perovskites (upon Er replacement) was additionally evaluated using UV and PL data. Photocatalytic efficiency of SmErxFe1-xO3was at first adjudged through comparative studies with SmFeO3by involving effective treatment of organic dyes under visible light. Secondly, improved electrical conductivity in SmErxFe1-xO3was capitalized on to fabricate p-ndevices that demonstrated remarkable photoelectrical performance. Forward current and response ratio improved significantly in such devices. The bias conditions were also noted to proportionately improve the photo switching potential. Time-dependent photoresponse results affirmed the stability in processed devices. The improved application performance in SmErxFe1-xO3nanostructures has been reasoned to effective substitution of Er ions, which tend to influence the O-Fe-O interactions and result with the observed electrical characteristics to facilitate the much needed improved charge transfer process. |
| Databáze: |
Supplemental Index |
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