Defect-mediated photoluminescence enhancement in ZnO/ITO via MeV Cu++ ion irradiation. (March 2021)

• Record Type: Journal Article
• Authors: Rehman, Khalil Ur; Zubair, Muhammad; Hassan, Ali; Khan, M. Imtiaz; Ahmad, Ishaq; Ahmad, Pervaiz; Ali, Hazrat; Ali, Tariq; Haris, Muhammad
• Is Part Of: Applied radiation and isotopes. Volume 169(2021)
• Publication Date: 2021-03
• Subjects: Ions irradiation -- ZnO nanowires -- Radiation damage -- Defects formation -- Green luminescence; Radiology -- Periodicals; Radiation -- Industrial applications -- Periodicals; Nuclear chemistry -- Periodicals; Internet resource; Periodical; 660.298
• DOI: 10.1016/j.apradiso.2020.109461
• Languages: English
• ISSNs: 0969-8043

Abstract

Abstract: Zinc oxide (ZnO) nanowires play a pivotal role in the nanoworld due to their broad range of characteristics and applications. In this work, structural and optical properties of ZnO nanowires grown on indium doped tin oxide (ITO) coated glass have been modified by copper (Cu ++ ) ions irradiation at constant energy of 0.7 MeV. The X-ray diffraction (XRD), photoluminescence (PL), and field emission scanning electron microscope (FESEM) are used to examine changes in the nanowires. XRD results show that the crystallite size first decreases and then increases with high ion dose while peaks' intensity decreases continuously with increasing the dose. The absence of (102) plane after irradiation depicts the defects formation. FESEM clearly shows the damage that occurred in the density of nanowires and also depicts the reduced charging effect with increasing dose. The PL spectra indicate the strong near-band edge peak and green luminescence enhancement has been recorded due to low dose ion irradiation. Highlights: The crystallite size in ZnO samples first decreased and then increased with high ion dose. The damage in the ZnO structures occurred by increasing ion dose. The strong near-band edge peak and green luminescence enhancement has been recorded due to low dose ion irradiation.