Influence of electrolyte co-additives on the performance of dye-sensitized solar cells
<p>Abstract</p> <p>The presence of specific chemical additives in the redox electrolyte results in an efficient increase of the photovoltaic performance of dye-sensitized solar cells (DSCs). The most effective additives are 4-<it>tert</it>-butylpyridine (TBP), <it>...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
SpringerOpen
2011-01-01
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| Series: | Nanoscale Research Letters |
| Online Access: | http://www.nanoscalereslett.com/content/6/1/307 |
| _version_ | 1797715872909885440 |
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| author | Karagianni Chaido-Stefania Stergiopoulos Thomas Rozi Evangelia Falaras Polycarpos |
| author_facet | Karagianni Chaido-Stefania Stergiopoulos Thomas Rozi Evangelia Falaras Polycarpos |
| author_sort | Karagianni Chaido-Stefania |
| collection | DOAJ |
| description | <p>Abstract</p> <p>The presence of specific chemical additives in the redox electrolyte results in an efficient increase of the photovoltaic performance of dye-sensitized solar cells (DSCs). The most effective additives are 4-<it>tert</it>-butylpyridine (TBP), <it>N</it>-methylbenzimidazole (NMBI) and guanidinium thiocyanate (GuNCS) that are adsorbed onto the photoelectrode/electrolyte interface, thus shifting the semiconductor's conduction band edge and preventing recombination with triiodides. In a comparative work, we investigated in detail the action of TBP and NMBI additives in ionic liquid-based redox electrolytes with varying iodine concentrations, in order to extract the optimum additive/I<sub>2 </sub>ratio for each system. Different optimum additive/I<sub>2 </sub>ratios were determined for TBP and NMBI, despite the fact that both generally work in a similar way. Further addition of GuNCS in the optimized electrolytic media causes significant synergistic effects, the action of GuNCS being strongly influenced by the nature of the corresponding co-additive. Under the best operation conditions, power conversion efficiencies as high as 8% were obtained.</p> |
| first_indexed | 2024-03-12T08:13:12Z |
| format | Article |
| id | doaj.art-c7a907f04dc44f3f85c12ecbdc7407ec |
| institution | Directory Open Access Journal |
| issn | 1931-7573 1556-276X |
| language | English |
| last_indexed | 2024-03-12T08:13:12Z |
| publishDate | 2011-01-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | Nanoscale Research Letters |
| spelling | doaj.art-c7a907f04dc44f3f85c12ecbdc7407ec2023-09-02T19:03:32ZengSpringerOpenNanoscale Research Letters1931-75731556-276X2011-01-0161307Influence of electrolyte co-additives on the performance of dye-sensitized solar cellsKaragianni Chaido-StefaniaStergiopoulos ThomasRozi EvangeliaFalaras Polycarpos<p>Abstract</p> <p>The presence of specific chemical additives in the redox electrolyte results in an efficient increase of the photovoltaic performance of dye-sensitized solar cells (DSCs). The most effective additives are 4-<it>tert</it>-butylpyridine (TBP), <it>N</it>-methylbenzimidazole (NMBI) and guanidinium thiocyanate (GuNCS) that are adsorbed onto the photoelectrode/electrolyte interface, thus shifting the semiconductor's conduction band edge and preventing recombination with triiodides. In a comparative work, we investigated in detail the action of TBP and NMBI additives in ionic liquid-based redox electrolytes with varying iodine concentrations, in order to extract the optimum additive/I<sub>2 </sub>ratio for each system. Different optimum additive/I<sub>2 </sub>ratios were determined for TBP and NMBI, despite the fact that both generally work in a similar way. Further addition of GuNCS in the optimized electrolytic media causes significant synergistic effects, the action of GuNCS being strongly influenced by the nature of the corresponding co-additive. Under the best operation conditions, power conversion efficiencies as high as 8% were obtained.</p>http://www.nanoscalereslett.com/content/6/1/307 |
| spellingShingle | Karagianni Chaido-Stefania Stergiopoulos Thomas Rozi Evangelia Falaras Polycarpos Influence of electrolyte co-additives on the performance of dye-sensitized solar cells Nanoscale Research Letters |
| title | Influence of electrolyte co-additives on the performance of dye-sensitized solar cells |
| title_full | Influence of electrolyte co-additives on the performance of dye-sensitized solar cells |
| title_fullStr | Influence of electrolyte co-additives on the performance of dye-sensitized solar cells |
| title_full_unstemmed | Influence of electrolyte co-additives on the performance of dye-sensitized solar cells |
| title_short | Influence of electrolyte co-additives on the performance of dye-sensitized solar cells |
| title_sort | influence of electrolyte co additives on the performance of dye sensitized solar cells |
| url | http://www.nanoscalereslett.com/content/6/1/307 |
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