Defect minimization and morphology optimization in TiO2 nanotube thin films, grown on transparent conducting substrate, for dye synthesized solar cell application
TiO2 nanotube (TNT) arrays have proven to be a perspective material for dye- or semiconductor sensitized solar cells. Although their preparation by anodic oxidation method is well elaborated for Ti foil substrate, the synthesis of high quality, homogeneous TNT arrays on a transparent conductive oxid...
| Päätekijät: | , , , , , |
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| Muut tekijät: | |
| Aineistotyyppi: | Journal Article |
| Kieli: | English |
| Julkaistu: |
2013
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| Linkit: | https://hdl.handle.net/10356/96565 http://hdl.handle.net/10220/10305 |
| _version_ | 1826113190265618432 |
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| author | Kuzmych, Oleksandr Nonomura, Kazuteru Nyberg, Tomas Hagfeldt, Anders Skompska, Magdalena Johansson, Erik M. J. |
| author2 | Energy Research Institute @ NTU (ERI@N) |
| author_facet | Energy Research Institute @ NTU (ERI@N) Kuzmych, Oleksandr Nonomura, Kazuteru Nyberg, Tomas Hagfeldt, Anders Skompska, Magdalena Johansson, Erik M. J. |
| author_sort | Kuzmych, Oleksandr |
| collection | NTU |
| description | TiO2 nanotube (TNT) arrays have proven to be a perspective material for dye- or semiconductor sensitized solar cells. Although their preparation by anodic oxidation method is well elaborated for Ti foil substrate, the synthesis of high quality, homogeneous TNT arrays on a transparent conductive oxide (TCO) is still associated with some experimental challenges. In this paper we present a way of preparation of defect-free, homogenous TNT film on a TCO substrate by a combination of high temperature Ti sputtering and controlled “interrupted” anodization in viscous electrolyte. High temperature of the substrate during Ti sputter coating was found crucial for good adhesion between the Ti thin film and TCO, which seems to be the most important condition for synthesis of TNTs from a Ti thin film. The reason of poor adhesion of the Ti layer sputtered at room temperature is discussed in terms of internal stress forces. An Ar-ion sputtering was proposed as a method for removal of the non-organized top porous layer to reveal a well organized tubular geometry of TNTs and control their final lengths. Such control of morphology of the top layer is important for preparation of solid state solar cells. |
| first_indexed | 2024-10-01T03:19:09Z |
| format | Journal Article |
| id | ntu-10356/96565 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T03:19:09Z |
| publishDate | 2013 |
| record_format | dspace |
| spelling | ntu-10356/965652021-01-08T05:44:47Z Defect minimization and morphology optimization in TiO2 nanotube thin films, grown on transparent conducting substrate, for dye synthesized solar cell application Kuzmych, Oleksandr Nonomura, Kazuteru Nyberg, Tomas Hagfeldt, Anders Skompska, Magdalena Johansson, Erik M. J. Energy Research Institute @ NTU (ERI@N) TiO2 nanotube (TNT) arrays have proven to be a perspective material for dye- or semiconductor sensitized solar cells. Although their preparation by anodic oxidation method is well elaborated for Ti foil substrate, the synthesis of high quality, homogeneous TNT arrays on a transparent conductive oxide (TCO) is still associated with some experimental challenges. In this paper we present a way of preparation of defect-free, homogenous TNT film on a TCO substrate by a combination of high temperature Ti sputtering and controlled “interrupted” anodization in viscous electrolyte. High temperature of the substrate during Ti sputter coating was found crucial for good adhesion between the Ti thin film and TCO, which seems to be the most important condition for synthesis of TNTs from a Ti thin film. The reason of poor adhesion of the Ti layer sputtered at room temperature is discussed in terms of internal stress forces. An Ar-ion sputtering was proposed as a method for removal of the non-organized top porous layer to reveal a well organized tubular geometry of TNTs and control their final lengths. Such control of morphology of the top layer is important for preparation of solid state solar cells. 2013-06-13T03:12:25Z 2019-12-06T19:32:35Z 2013-06-13T03:12:25Z 2019-12-06T19:32:35Z 2012 2012 Journal Article Kuzmych, O., Nonomura, K., Johansson, E. M. J., Nyberg, T., Hagfeldt, A., & Skompska, M. (2012). Defect minimization and morphology optimization in TiO2 nanotube thin films, grown on transparent conducting substrate, for dye synthesized solar cell application. Thin Solid Films, 522, 71-78. 0040-6090 https://hdl.handle.net/10356/96565 http://hdl.handle.net/10220/10305 10.1016/j.tsf.2012.09.011 en Thin solid films © 2012 Elsevier B.V. |
| spellingShingle | Kuzmych, Oleksandr Nonomura, Kazuteru Nyberg, Tomas Hagfeldt, Anders Skompska, Magdalena Johansson, Erik M. J. Defect minimization and morphology optimization in TiO2 nanotube thin films, grown on transparent conducting substrate, for dye synthesized solar cell application |
| title | Defect minimization and morphology optimization in TiO2 nanotube thin films, grown on transparent conducting substrate, for dye synthesized solar cell application |
| title_full | Defect minimization and morphology optimization in TiO2 nanotube thin films, grown on transparent conducting substrate, for dye synthesized solar cell application |
| title_fullStr | Defect minimization and morphology optimization in TiO2 nanotube thin films, grown on transparent conducting substrate, for dye synthesized solar cell application |
| title_full_unstemmed | Defect minimization and morphology optimization in TiO2 nanotube thin films, grown on transparent conducting substrate, for dye synthesized solar cell application |
| title_short | Defect minimization and morphology optimization in TiO2 nanotube thin films, grown on transparent conducting substrate, for dye synthesized solar cell application |
| title_sort | defect minimization and morphology optimization in tio2 nanotube thin films grown on transparent conducting substrate for dye synthesized solar cell application |
| url | https://hdl.handle.net/10356/96565 http://hdl.handle.net/10220/10305 |
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