Pyrocatechol violet sensitized Ho-TiO2/ZnO nanostructured material: as photoanode for dye sensitized solar cells
In this work TiO _2 , Holmium doped (Ho-TiO _2 ) Titanium oxide nanoparticles (NPs) and the corresponding nanostructured combinations (Ho-TiO _2 /ZnO NC) were successfully synthesized through sol gel method and reflux techniques respectively. The prepared nano materials were characterized with the h...
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| Format: | Article |
| Language: | English |
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IOP Publishing
2020-01-01
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| Series: | Materials Research Express |
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| Online Access: | https://doi.org/10.1088/2053-1591/ab7866 |
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| author | Naimat Ullah Syed Mujtaba Shah Hazrat Hussain Rotaba Ansir Muhammad Nasir Hussain |
| author_facet | Naimat Ullah Syed Mujtaba Shah Hazrat Hussain Rotaba Ansir Muhammad Nasir Hussain |
| author_sort | Naimat Ullah |
| collection | DOAJ |
| description | In this work TiO _2 , Holmium doped (Ho-TiO _2 ) Titanium oxide nanoparticles (NPs) and the corresponding nanostructured combinations (Ho-TiO _2 /ZnO NC) were successfully synthesized through sol gel method and reflux techniques respectively. The prepared nano materials were characterized with the help of x-ray diffraction Analysis (XRD), UV–visible spectroscopy, Scanning Electron Microscopy (SEM), Energy dispersive x-ray Analysis (EDX) and Fourier Transform infrared spectroscopy (FT-IR). The absorption spectra of nano materials were used for band gaps calculation. The band gap of pure TiO _2 NPs was found to be 3.10 eV which was effectively tuned to 2.65 eV by the doping of Holmium at different concentrations. XRD patterns confirmed the crystalline nature and purity of the synthesized nano materials. Morphology and elemental composition of the material were investigated using SEM and EDX respectively. FTIR helped in detecting the functional groups and grafting of the dye on the surface of nanoparticles. The nano materials were used as Photo-anodes in dye sensitized solar cells (DSSC). Pyrocatechol Violet dye was used as a photo-sensitizer. P3HT (polymer), a hole conducting polymer, was employed as a solid state electrolyte. I–V measurements were used for characterization of fabricated solar cells. Ho-TiO _2 /ZnO nanomaterial photosensitized with Pyrocatechol violet dye gave the highest percentage efficiency of 1.51. Other characteristic parameters of the fabricated devices such as short circuit current (Jsc), open circuit voltage (Voc), maximum power point (Mpp) and fill factor were found to be 11.2 mA cm ^−2 , 0.41 V, 1.55(mW cm ^−2 ) and 0.33 respectively. |
| first_indexed | 2024-03-12T15:37:56Z |
| format | Article |
| id | doaj.art-0e139ba51665473b89fab89f95a41d49 |
| institution | Directory Open Access Journal |
| issn | 2053-1591 |
| language | English |
| last_indexed | 2024-03-12T15:37:56Z |
| publishDate | 2020-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | Materials Research Express |
| spelling | doaj.art-0e139ba51665473b89fab89f95a41d492023-08-09T16:05:39ZengIOP PublishingMaterials Research Express2053-15912020-01-017303500310.1088/2053-1591/ab7866Pyrocatechol violet sensitized Ho-TiO2/ZnO nanostructured material: as photoanode for dye sensitized solar cellsNaimat Ullah0https://orcid.org/0000-0001-5370-6187Syed Mujtaba Shah1https://orcid.org/0000-0002-6528-0344Hazrat Hussain2Rotaba Ansir3https://orcid.org/0000-0002-0767-5161Muhammad Nasir Hussain4Department of Chemistry, Quaid-i-Azam University , Islamabad, PakistanDepartment of Chemistry, Quaid-i-Azam University , Islamabad, PakistanDepartment of Chemistry, Quaid-i-Azam University , Islamabad, PakistanDepartment of Chemistry, Quaid-i-Azam University , Islamabad, PakistanDepartment of Chemistry, Quaid-i-Azam University , Islamabad, PakistanIn this work TiO _2 , Holmium doped (Ho-TiO _2 ) Titanium oxide nanoparticles (NPs) and the corresponding nanostructured combinations (Ho-TiO _2 /ZnO NC) were successfully synthesized through sol gel method and reflux techniques respectively. The prepared nano materials were characterized with the help of x-ray diffraction Analysis (XRD), UV–visible spectroscopy, Scanning Electron Microscopy (SEM), Energy dispersive x-ray Analysis (EDX) and Fourier Transform infrared spectroscopy (FT-IR). The absorption spectra of nano materials were used for band gaps calculation. The band gap of pure TiO _2 NPs was found to be 3.10 eV which was effectively tuned to 2.65 eV by the doping of Holmium at different concentrations. XRD patterns confirmed the crystalline nature and purity of the synthesized nano materials. Morphology and elemental composition of the material were investigated using SEM and EDX respectively. FTIR helped in detecting the functional groups and grafting of the dye on the surface of nanoparticles. The nano materials were used as Photo-anodes in dye sensitized solar cells (DSSC). Pyrocatechol Violet dye was used as a photo-sensitizer. P3HT (polymer), a hole conducting polymer, was employed as a solid state electrolyte. I–V measurements were used for characterization of fabricated solar cells. Ho-TiO _2 /ZnO nanomaterial photosensitized with Pyrocatechol violet dye gave the highest percentage efficiency of 1.51. Other characteristic parameters of the fabricated devices such as short circuit current (Jsc), open circuit voltage (Voc), maximum power point (Mpp) and fill factor were found to be 11.2 mA cm ^−2 , 0.41 V, 1.55(mW cm ^−2 ) and 0.33 respectively.https://doi.org/10.1088/2053-1591/ab7866dye sensitized solar cellpyrocatechol violetsol gel methodSEMfill factorI–V curve |
| spellingShingle | Naimat Ullah Syed Mujtaba Shah Hazrat Hussain Rotaba Ansir Muhammad Nasir Hussain Pyrocatechol violet sensitized Ho-TiO2/ZnO nanostructured material: as photoanode for dye sensitized solar cells Materials Research Express dye sensitized solar cell pyrocatechol violet sol gel method SEM fill factor I–V curve |
| title | Pyrocatechol violet sensitized Ho-TiO2/ZnO nanostructured material: as photoanode for dye sensitized solar cells |
| title_full | Pyrocatechol violet sensitized Ho-TiO2/ZnO nanostructured material: as photoanode for dye sensitized solar cells |
| title_fullStr | Pyrocatechol violet sensitized Ho-TiO2/ZnO nanostructured material: as photoanode for dye sensitized solar cells |
| title_full_unstemmed | Pyrocatechol violet sensitized Ho-TiO2/ZnO nanostructured material: as photoanode for dye sensitized solar cells |
| title_short | Pyrocatechol violet sensitized Ho-TiO2/ZnO nanostructured material: as photoanode for dye sensitized solar cells |
| title_sort | pyrocatechol violet sensitized ho tio2 zno nanostructured material as photoanode for dye sensitized solar cells |
| topic | dye sensitized solar cell pyrocatechol violet sol gel method SEM fill factor I–V curve |
| url | https://doi.org/10.1088/2053-1591/ab7866 |
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