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| Content Provider | Springer Nature Link |
|---|---|
| Author | Banki, Manmadha Rao Tathavadekar, Mukta Chunchu, Venkatrao Roy, Somnath C. |
| Copyright Year | 2016 |
| Abstract | TiO$_{2}$ nanotube arrays formed by electrochemical anodization of Ti metal foil are crystallized through a solvothermal technique at 200 °C (as compared to conventional annealing at 550 °C), which results in anatase phase with granular morphology. The photo-current measurements reveal a higher current-density under the visible light for solvothermally crystallized samples. The photo-current behavior has been analysed and correlated with defect state characterization using X-ray photo-electron spectroscopy, Photo-luminescence, Electron paramagnetic resonance and Mott-Schottky measurements. These studies indicate an oxygen vacancy related defect state at 1.14 eV below the conduction band. Also, the density of defect states in solvothermally crystallised samples is an order of magnitude higher than that in conventionally annealed samples. Furthermore, the photo-voltaic properties are studied through dye-sensitised solar cells. I–V characteristics of DSSC fabricated with solvothermally crystallised samples show comparable efficiency but higher dye-adsorption with respect to the conventionally annealed samples. Such a comparable efficiency at a lower thermal budget leads to reduced ‘energy pay-back time’ in solar cells fabricated with solvothermally crystallised TiO$_{2}$ nanotube arrays. Finally, we demonstrate a proof-of-concept design of flexible solar cell based on TiO$_{2}$ nanotubes grown on Kapton substrate and crystallised through the solvothermal technique. |
| Starting Page | 12427 |
| Ending Page | 12437 |
| Page Count | 11 |
| File Format | |
| ISSN | 09574522 |
| Journal | Journal of Materials Science: Materials in Electronics |
| Volume Number | 27 |
| Issue Number | 12 |
| e-ISSN | 1573482X |
| Language | English |
| Publisher | Springer US |
| Publisher Date | 2016-06-30 |
| Publisher Place | New York |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Optical and Electronic Materials Characterization and Evaluation of Materials |
| Content Type | Text |
| Resource Type | Article |
| Subject | Atomic and Molecular Physics, and Optics Biomaterials Biophysics Condensed Matter Physics Electronic, Optical and Magnetic Materials Bioengineering Electrical and Electronic Engineering Biomedical Engineering |
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