Highly sensitive self-powered UV-visible photodetector based on ZrO2-RGO nanofibers/n-Si heterojunction
Yildirim, Fatma, Khalili, Saba, Orhan, Zeynep, Chenari, Hossein Mahmoudi, Aydogan, S.
Nanoscale microstructures such as nanofibers (NFs) have the potential to be widely used in optoelectronics as they minimize the interfacial effects. A low-cost and easily prepared the ZrO2-RGO NFs/n-Si heterojunction photodetector was fabricated and its photodetector performance were reported in the present work. The morphological, structural, and optical analyses of the ZrO2-RGO NFs were achieved by scanning electron microscopy (SEM), X-ray diffraction (XRD), and UV-Vis diffuse reflectance spectroscopy (DRS), respectively. The device yields a rectification ratio of 37384. It was observed that the ZrO2-RGO NFs/n-Si photodetector fabricated under the same conditions gave a high response to light in both the visible and UV spectral regions in addition to the self-powered mode. Compared to the reverse current measured in the dark, the ZrO2-RGO NFs/n-Si heterojunction gives quite high reverse current even in ambient light as high as an order of three, making it a candidate photodetector for low light intensities. The ON/OFF ratio reached up to 6.1 x 103 and 5.5 x 103 for 150 mW/cm2 for visible light and UV (365 nm), respectively (at -2.0 V).(c) 2022 Elsevier B.V. All rights reserved.
- Journal
- JOURNAL OF ALLOYS AND COMPOUNDS
- Year
- 2023
- Volume
- 935
- ISSN
- 0925-8388
- eISSN
- 1873-4669
- DOI
- 10.1016/j.jallcom.2022.168054
- WoS UID
- WOS:000890184600002