Towards Long-Term Photostability of Solid-State Dye Sensitized Solar Cells
The solid-state dye-sensitized solar cell (DSSC) was introduced to overcome inherent manufacturing and instability issues of the electrolyte-based DSSC and progress has been made to deliver high photovoltaic efficiencies at low cost. However, despite 15 years research and development, there still re...
| Main Authors: | , , , , , , , , |
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| Format: | Journal article |
| Published: |
2014
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| _version_ | 1826288047883288576 |
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| author | Pathak, S Abate, A Leijtens, T Hollman, D Teuscher, J Pazos, L Docampo, P Steiner, U Snaith, H |
| author_facet | Pathak, S Abate, A Leijtens, T Hollman, D Teuscher, J Pazos, L Docampo, P Steiner, U Snaith, H |
| author_sort | Pathak, S |
| collection | OXFORD |
| description | The solid-state dye-sensitized solar cell (DSSC) was introduced to overcome inherent manufacturing and instability issues of the electrolyte-based DSSC and progress has been made to deliver high photovoltaic efficiencies at low cost. However, despite 15 years research and development, there still remains no clear demonstration of long-term stability. Here, solid-state DSSCs are subjected to the severe aging conditions of continuous illumination at an elevated temperature. A fast deterioration in performance is observed for devices encapsulated in the absence of oxygen. The photovoltaic performance recovers when re-exposed to air. This reversible behavior is attributed to three related processes: i) the creation of light and oxygen sensitive electronic shunting paths between TiO and the top metal electrode, ii) increased recombination at the TiO/organic interface, and iii) the creation of deep electron traps that reduce the photocurrent. The device deterioration is remedied by the formation of an insulating alumino-silicate shell around the TiO nanocrystals, which reduces interfacial recombination, and the introduction of an insulating mesoporous SiO buffer layer between the top electrode and TiO, which acts as a permanent insulating barrier between the TiO and the metal electrode, preventing shunting. © 2014 WILEY-VCH Verlag GmbH and Co. KGaA, Weinheim. |
| first_indexed | 2024-03-07T02:07:50Z |
| format | Journal article |
| id | oxford-uuid:9f97c1b7-641e-4a04-94e5-0bd90853a008 |
| institution | University of Oxford |
| last_indexed | 2024-03-07T02:07:50Z |
| publishDate | 2014 |
| record_format | dspace |
| spelling | oxford-uuid:9f97c1b7-641e-4a04-94e5-0bd90853a0082022-03-27T00:59:10ZTowards Long-Term Photostability of Solid-State Dye Sensitized Solar CellsJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:9f97c1b7-641e-4a04-94e5-0bd90853a008Symplectic Elements at Oxford2014Pathak, SAbate, ALeijtens, THollman, DTeuscher, JPazos, LDocampo, PSteiner, USnaith, HThe solid-state dye-sensitized solar cell (DSSC) was introduced to overcome inherent manufacturing and instability issues of the electrolyte-based DSSC and progress has been made to deliver high photovoltaic efficiencies at low cost. However, despite 15 years research and development, there still remains no clear demonstration of long-term stability. Here, solid-state DSSCs are subjected to the severe aging conditions of continuous illumination at an elevated temperature. A fast deterioration in performance is observed for devices encapsulated in the absence of oxygen. The photovoltaic performance recovers when re-exposed to air. This reversible behavior is attributed to three related processes: i) the creation of light and oxygen sensitive electronic shunting paths between TiO and the top metal electrode, ii) increased recombination at the TiO/organic interface, and iii) the creation of deep electron traps that reduce the photocurrent. The device deterioration is remedied by the formation of an insulating alumino-silicate shell around the TiO nanocrystals, which reduces interfacial recombination, and the introduction of an insulating mesoporous SiO buffer layer between the top electrode and TiO, which acts as a permanent insulating barrier between the TiO and the metal electrode, preventing shunting. © 2014 WILEY-VCH Verlag GmbH and Co. KGaA, Weinheim. |
| spellingShingle | Pathak, S Abate, A Leijtens, T Hollman, D Teuscher, J Pazos, L Docampo, P Steiner, U Snaith, H Towards Long-Term Photostability of Solid-State Dye Sensitized Solar Cells |
| title | Towards Long-Term Photostability of Solid-State Dye Sensitized Solar Cells |
| title_full | Towards Long-Term Photostability of Solid-State Dye Sensitized Solar Cells |
| title_fullStr | Towards Long-Term Photostability of Solid-State Dye Sensitized Solar Cells |
| title_full_unstemmed | Towards Long-Term Photostability of Solid-State Dye Sensitized Solar Cells |
| title_short | Towards Long-Term Photostability of Solid-State Dye Sensitized Solar Cells |
| title_sort | towards long term photostability of solid state dye sensitized solar cells |
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