The effect of barrier performance on the lifetime of small-molecule organic solar cells
In this work, we use different encapsulations to protect vacuum-evaporated small molecule organic solar cells with a simple p-i-i-stack for lifetime studies. Our devices use ZnPc and C60 as active materials. Lifetimes (T50) in a range from 300 h for un-encapsulated devices to 4000 h for glass-encaps...
| Main Authors: | , , , , , , |
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| Format: | Journal article |
| Language: | English |
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Elsevier
2012
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| _version_ | 1797067287977525248 |
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| author | Hermenau, M Schubert, S Klumbies, H Fahlteich, J Müller-Meskamp, L Leo, K Riede, M |
| author_facet | Hermenau, M Schubert, S Klumbies, H Fahlteich, J Müller-Meskamp, L Leo, K Riede, M |
| author_sort | Hermenau, M |
| collection | OXFORD |
| description | In this work, we use different encapsulations to protect vacuum-evaporated small molecule organic solar cells with a simple p-i-i-stack for lifetime studies. Our devices use ZnPc and C60 as active materials. Lifetimes (T50) in a range from 300 h for un-encapsulated devices to 4000 h for glass-encapsulated have been observed. We use a model to distinguish between the water vapor transmission rate (WVTR) of the barrier and an additional WVTR of the aluminum top electrode. For all observed devices a loss of 50% of initial efficiency is observed when 10 mg m<sup>−2</sup> water entered the device. The losses are related to a reduction of short circuit current density only, whereas open circuit voltage and fill factor remains unaffected. We relate this to an interaction of the water molecules with C60. © 2011 Elsevier B.V. |
| first_indexed | 2024-03-06T21:54:10Z |
| format | Journal article |
| id | oxford-uuid:4c53545b-3043-43cb-aede-7612561acf98 |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-06T21:54:10Z |
| publishDate | 2012 |
| publisher | Elsevier |
| record_format | dspace |
| spelling | oxford-uuid:4c53545b-3043-43cb-aede-7612561acf982022-03-26T15:48:53ZThe effect of barrier performance on the lifetime of small-molecule organic solar cellsJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:4c53545b-3043-43cb-aede-7612561acf98EnglishSymplectic Elements at OxfordElsevier2012Hermenau, MSchubert, SKlumbies, HFahlteich, JMüller-Meskamp, LLeo, KRiede, MIn this work, we use different encapsulations to protect vacuum-evaporated small molecule organic solar cells with a simple p-i-i-stack for lifetime studies. Our devices use ZnPc and C60 as active materials. Lifetimes (T50) in a range from 300 h for un-encapsulated devices to 4000 h for glass-encapsulated have been observed. We use a model to distinguish between the water vapor transmission rate (WVTR) of the barrier and an additional WVTR of the aluminum top electrode. For all observed devices a loss of 50% of initial efficiency is observed when 10 mg m<sup>−2</sup> water entered the device. The losses are related to a reduction of short circuit current density only, whereas open circuit voltage and fill factor remains unaffected. We relate this to an interaction of the water molecules with C60. © 2011 Elsevier B.V. |
| spellingShingle | Hermenau, M Schubert, S Klumbies, H Fahlteich, J Müller-Meskamp, L Leo, K Riede, M The effect of barrier performance on the lifetime of small-molecule organic solar cells |
| title | The effect of barrier performance on the lifetime of small-molecule organic solar cells |
| title_full | The effect of barrier performance on the lifetime of small-molecule organic solar cells |
| title_fullStr | The effect of barrier performance on the lifetime of small-molecule organic solar cells |
| title_full_unstemmed | The effect of barrier performance on the lifetime of small-molecule organic solar cells |
| title_short | The effect of barrier performance on the lifetime of small-molecule organic solar cells |
| title_sort | effect of barrier performance on the lifetime of small molecule organic solar cells |
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