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| Content Provider | IET Digital Library |
|---|---|
| Author | Dubey, R. S. Saravanan, S. |
| Abstract | This Letter presents the electrodeposition of zinc oxide (ZnO) nanostructures by varying the negative potential and investigation of structural, optical, and morphological characteristics. UV–vis spectroscopy investigation showed the redshift of the absorption peak with the increased negative potential. Using Tauc relation, the optical bandgap values estimated to be 3.09, 2.97, 2.93, 2.91, 2.90, and 2.84 eV corresponding to the samples prepared at potential −0.5, −0.7, −0.9, −1.1, −1.3 and −1.5 V. Fluorescence spectra exhibited the UV emission band at wavelength 392 nm along with a peak at 650 nm corresponds to the second-order nature of ZnO. Fourier-transform infrared spectroscopy analysis confirmed the various vibration modes at 403, 493, and 702 cm−1 originated by the ZnO nanostructures. X-ray diffraction pattern revealed the hexagonal wurtzite phase of ZnO. Scanning electron microscopy investigation evidenced the distinct morphology of ZnO with the increased negative potential; however, the dense and perpendicularly oriented ZnO nanorods are prepared at highest negative potential as compared to rice grain-like ZnO structure prepared at least negative potential. Furthermore, the prepared nanostructures are used as dye-sensitised solar cells (DSSCs) photoanodes, while the DSSC-Z6 showed the increased cell efficiency up to 1.2%, due to the aligned growth of the ZnO nanorods. |
| Starting Page | 840 |
| Ending Page | 844 |
| Page Count | 5 |
| Volume Number | 15 |
| e-ISSN | 17500443 |
| Issue Number | Issue 12, Oct (2020) |
| Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/mnl/15/12 |
| Journal | Micro & Nano Letters |
| Publisher Date | 2020-10-21 |
| Access Restriction | Open |
| Rights Holder | © The Institution of Engineering and Technology |
| Subject Keyword | Condensed Matter Deposition from Liquid Phase (melts And Solutions) Dye-sensitised Solar Cell Dye-sensitised Solar Cell Photoanodes Electrochemical Electrodes Electrochemical Growth Electrochemistry And Electrophoresis Electrodeposition Energy Gap Epitaxy Fluorescence Fluorescence Spectra Fourier Transform Infrared Spectra Fourier-transform Infrared Spectroscopy II-VI And III-V SemiConductor II-VI SemiConductor Infrared And Raman Spectra in Inorganic Crystal Low-Dimensional Structure: Growth, Structure And Nonelectronic Property Morphology Nanofabrication Nanometre-Scale Semiconductor Fabrication Technology NanoParticle Nanorods Nanotube And Nanostructured Material Negative Potential Optical Bandgap Optical Constants Optical Constants And Parameter Optical Property of II-VI And III-V SemiConductor Photoelectrochemical Conversion Photoluminescence Photoluminescence in II-VI And III-V SemiConductor Red Shift Redshift Scanning Electron Microscopy Semiconductor Growth Semiconductor Thin Film Solar Cell And Array Structure Structure of Solid Clusters Tauc Relation Thin Film Growth Ultraviolet Spectra UV Emission Band UV–vis Spectroscopy Visible And Ultraviolet Spectra of II-VI And III-V SemiConductor Visible Spectra Voltage -0.5 V Voltage -0.7 V Voltage -0.9 V Voltage -1.1 V Voltage -1.3 V Voltage -1.5 V Wavelength 392.0 Nm Wavelength 650.0 Nm Wide Band Gap SemiConductor X-Ray Diffraction Zinc Compound Zno ZnO Nanostructure |
| Content Type | Text |
| Resource Type | Article |
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