Abstract
Thin films of Zn-doped copper selenide (Cu3Se2) nanostructures with different Zn concentrations were deposited on fluorine-doped tin oxide (FTO) glass substrates by electrodeposition method. The structural, optical, electrical, and photovoltaic properties of the deposited films were investigated by different analyses. X-ray diffraction (XRD) pattern showed the crystalline and tetragonal structure of the samples. The results of XRD pattern also showed that the peaks shifted to higher angles by increasing the Zn dopant, indicating the influence of dopant on the crystalline structure of Cu3Se2. Electron microscopy analysis showed that the films had a sheet-like shape whose thickness changed by altering the dopant percentage; the highest number of sheets belonged to the samples with higher concentrations of dopant. The photoluminescence (PL) analysis of the Cu3Se2 nanostructures revealed that the peaks in the green and infrared regions shifted to shorter wavelengths and the intensity of emission peaks increased for the Zn-doped sample with the highest concentration, compared with the un-doped sample. Based on the absorption spectrum analysis, the optical energy band gap increased with raising the percentage of Zn dopant. Finally, the electrical and photovoltaic parameters of the solar cells prepared via Cu3Se2 nanosheets were examined. The doped sample which had the highest percentage of doping, showed the highest efficiency (η) of ~1.30%.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
