Aging of flat heterojunction zinc phthalocyanine/fullerene C₆₀ organic solar cells
This work addresses the long-term aging of organic solar cells based on a flat zinc phthalocyanine (ZnPc)/C<sub>60</sub> heterojunction. We investigate both the typical degradation behavior of the short circuit current and of the saturated photocurrent, defined as <em>I</em>(...
| Main Authors: | , , , , , |
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| Format: | Journal article |
| Jezik: | English |
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Elsevier
2010
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| _version_ | 1826290025969483776 |
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| author | Lessmann, R Hong, Z Scholz, S Maennig, B Riede, M Leo, K |
| author_facet | Lessmann, R Hong, Z Scholz, S Maennig, B Riede, M Leo, K |
| author_sort | Lessmann, R |
| collection | OXFORD |
| description | This work addresses the long-term aging of organic solar cells based on a flat zinc phthalocyanine (ZnPc)/C<sub>60</sub> heterojunction. We investigate both the typical degradation behavior of the short circuit current and of the saturated photocurrent, defined as <em>I</em>(−1<em>V</em>). The latter remains constant after a relatively small initial decay, which is directly related to a substantial reduction of the contribution of excitons generated in C<sub>60</sub> to the external quantum efficiency. Mass spectroscopy analysis of the organic material after aging revealed oxidized C<sub>60</sub> and sub-products thereof. The reduction of <em>I</em>(−1<em>V</em>) is thus attributed to the reaction of C<sub>60</sub> molecules with oxygen impurities. The results strongly suggest that ZnPc/C<sub>60</sub> photovoltaic cells are intrinsically very stable on a time scale of thousand of hours if such reactions are prevented. © 2009 Elsevier B.V. |
| first_indexed | 2024-03-07T02:37:53Z |
| format | Journal article |
| id | oxford-uuid:a96622c1-b077-4863-8ced-214efc5e27fa |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-07T02:37:53Z |
| publishDate | 2010 |
| publisher | Elsevier |
| record_format | dspace |
| spelling | oxford-uuid:a96622c1-b077-4863-8ced-214efc5e27fa2022-03-27T03:08:15ZAging of flat heterojunction zinc phthalocyanine/fullerene C₆₀ organic solar cellsJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:a96622c1-b077-4863-8ced-214efc5e27faEnglishSymplectic Elements at OxfordElsevier2010Lessmann, RHong, ZScholz, SMaennig, BRiede, MLeo, KThis work addresses the long-term aging of organic solar cells based on a flat zinc phthalocyanine (ZnPc)/C<sub>60</sub> heterojunction. We investigate both the typical degradation behavior of the short circuit current and of the saturated photocurrent, defined as <em>I</em>(−1<em>V</em>). The latter remains constant after a relatively small initial decay, which is directly related to a substantial reduction of the contribution of excitons generated in C<sub>60</sub> to the external quantum efficiency. Mass spectroscopy analysis of the organic material after aging revealed oxidized C<sub>60</sub> and sub-products thereof. The reduction of <em>I</em>(−1<em>V</em>) is thus attributed to the reaction of C<sub>60</sub> molecules with oxygen impurities. The results strongly suggest that ZnPc/C<sub>60</sub> photovoltaic cells are intrinsically very stable on a time scale of thousand of hours if such reactions are prevented. © 2009 Elsevier B.V. |
| spellingShingle | Lessmann, R Hong, Z Scholz, S Maennig, B Riede, M Leo, K Aging of flat heterojunction zinc phthalocyanine/fullerene C₆₀ organic solar cells |
| title | Aging of flat heterojunction zinc phthalocyanine/fullerene C₆₀ organic solar cells |
| title_full | Aging of flat heterojunction zinc phthalocyanine/fullerene C₆₀ organic solar cells |
| title_fullStr | Aging of flat heterojunction zinc phthalocyanine/fullerene C₆₀ organic solar cells |
| title_full_unstemmed | Aging of flat heterojunction zinc phthalocyanine/fullerene C₆₀ organic solar cells |
| title_short | Aging of flat heterojunction zinc phthalocyanine/fullerene C₆₀ organic solar cells |
| title_sort | aging of flat heterojunction zinc phthalocyanine fullerene c₆₀ organic solar cells |
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