Highly sensitive TiO2 based photodetector for environmental sensing applications | ||
| Journal of Sustainable Food, Water, Energy and Environment | ||
| Article 1, Volume 1, Issue 1, April 2025, Pages 1-5 PDF (489.37 K) | ||
| Document Type: Original Article | ||
| DOI: 10.21608/jsfw.2025.363984.1000 | ||
| Authors | ||
| Sodky Hamed Mohamed* 1; Mohamed Rabia2; Madeha Awad3; Mohamed Asran Hassan4 | ||
| 12Physics Department, Faculty of Science, Sohag University, 82524 Sohag, Egypt | ||
| 2Nanomaterials Science Research Laboratory, Chemistry Department, Faculty of Science, Beni-Suef University, Beni-Suef, 62514, Egypt | ||
| 3Physics deparement, Faculty of science, Sohag University, 82524 Sohag, Egypt | ||
| 4Physics Department, Faculty of Science, Sohag University, 82524 Sohag, Egypt | ||
| Abstract | ||
| TiO2 thin films were fabricated using reactive direct current magnetron sputtering for the possible utilization as visible and/or IR-light photodetectors. The structure, chemical composition, morphology, optical and I-V characteristics were examined. X-ray diffraction inferred the existence of body centered tetragonal anatase crystallographic phase oriented around (101) plain. The chemical compositional analysis via EDAX indicated TiO2.1 stoichiometry. Nanoparticle morphology that is uniformly distributed were observed by SEM investigations. High transmittance over the visible and near spectral ranges with optical band gap of 3.29 eV were observed for the TiO2 thin films. The generated light current values at 1 V bias voltage were 0.251, 0.160 and 0.149 µA/cm2 for illumination with light of 440, 540 and 730 nm, respectively. The reported TiO2 based photodetector has good sensitivity comparable with the previously published works which infers that it may be used in environmental sensing applications. .. ... .. . . . . . . | ||
| Keywords | ||
| TiO2 thin films; structural properties; morphology; optical characteristics; photodetector | ||
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