Time-dependent efficiency measurements of polymer solar cells with dye additives: unexpected initial increase of efficiency
We report the effects of the addition of two azo-dye additives on the time-dependent efficiency of polymer solar cells. Although the maximum efficiencies of devices containing different amounts of dye do not vary greatly over the selected concentration range, the time dependence results reveal a sur...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
EDP Sciences
2018-01-01
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| Series: | EPJ Photovoltaics |
| Subjects: | |
| Online Access: | https://doi.org/10.1051/epjpv/2018003 |
| _version_ | 1818664638927077376 |
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| author | Bandaccari Kyle J. Chesmore Grace E. Bugaj Mitchel Valverde Parisa Tajalli-Tehrani Barber Richard P. McNelis Brian J. |
| author_facet | Bandaccari Kyle J. Chesmore Grace E. Bugaj Mitchel Valverde Parisa Tajalli-Tehrani Barber Richard P. McNelis Brian J. |
| author_sort | Bandaccari Kyle J. |
| collection | DOAJ |
| description | We report the effects of the addition of two azo-dye additives on the time-dependent efficiency of polymer solar cells. Although the maximum efficiencies of devices containing different amounts of dye do not vary greatly over the selected concentration range, the time dependence results reveal a surprising initial increase in efficiency in some samples. We observe this effect to be correlated with a leakage current, although a specific mechanism is not yet identified. We also present the measured lifetimes of these solar cells, and find that variations in dye concentrations produce a small effect at most. Characterization of the bulk heterojunction layer (active layer) morphology using atomic-force microscope (AFM) imaging reveals reordering patterns which suggest that the primary effects of the dyes arise via structural, not absorptive, characteristics. |
| first_indexed | 2024-12-17T05:35:56Z |
| format | Article |
| id | doaj.art-aac16b67177549f28d4bb71883ca16b9 |
| institution | Directory Open Access Journal |
| issn | 2105-0716 |
| language | English |
| last_indexed | 2024-12-17T05:35:56Z |
| publishDate | 2018-01-01 |
| publisher | EDP Sciences |
| record_format | Article |
| series | EPJ Photovoltaics |
| spelling | doaj.art-aac16b67177549f28d4bb71883ca16b92022-12-21T22:01:37ZengEDP SciencesEPJ Photovoltaics2105-07162018-01-019410.1051/epjpv/2018003pv170022Time-dependent efficiency measurements of polymer solar cells with dye additives: unexpected initial increase of efficiencyBandaccari Kyle J.Chesmore Grace E.Bugaj MitchelValverde Parisa Tajalli-TehraniBarber Richard P.McNelis Brian J.We report the effects of the addition of two azo-dye additives on the time-dependent efficiency of polymer solar cells. Although the maximum efficiencies of devices containing different amounts of dye do not vary greatly over the selected concentration range, the time dependence results reveal a surprising initial increase in efficiency in some samples. We observe this effect to be correlated with a leakage current, although a specific mechanism is not yet identified. We also present the measured lifetimes of these solar cells, and find that variations in dye concentrations produce a small effect at most. Characterization of the bulk heterojunction layer (active layer) morphology using atomic-force microscope (AFM) imaging reveals reordering patterns which suggest that the primary effects of the dyes arise via structural, not absorptive, characteristics.https://doi.org/10.1051/epjpv/2018003polymer photovoltaicdye additivesmorphologyleakage current |
| spellingShingle | Bandaccari Kyle J. Chesmore Grace E. Bugaj Mitchel Valverde Parisa Tajalli-Tehrani Barber Richard P. McNelis Brian J. Time-dependent efficiency measurements of polymer solar cells with dye additives: unexpected initial increase of efficiency EPJ Photovoltaics polymer photovoltaic dye additives morphology leakage current |
| title | Time-dependent efficiency measurements of polymer solar cells with dye additives: unexpected initial increase of efficiency |
| title_full | Time-dependent efficiency measurements of polymer solar cells with dye additives: unexpected initial increase of efficiency |
| title_fullStr | Time-dependent efficiency measurements of polymer solar cells with dye additives: unexpected initial increase of efficiency |
| title_full_unstemmed | Time-dependent efficiency measurements of polymer solar cells with dye additives: unexpected initial increase of efficiency |
| title_short | Time-dependent efficiency measurements of polymer solar cells with dye additives: unexpected initial increase of efficiency |
| title_sort | time dependent efficiency measurements of polymer solar cells with dye additives unexpected initial increase of efficiency |
| topic | polymer photovoltaic dye additives morphology leakage current |
| url | https://doi.org/10.1051/epjpv/2018003 |
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