Towards optimization of device performance in conjugated polymer photovoltaics: Charge generation, transfer and transport in poly( p-phenylene-vinylene) polymer heterojunctions
We fabricate photovoltaics comprised layers and blends of a hole-transporting derivative of poly( p-phenylene-vinylene) with a variety of electron-transporters: titanium dioxide, a cyano-substituted PPV, and a fullerene derivative (PCBM) to enhance device performance. Photovoltaic device characteriz...
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| Veröffentlicht in: | Solar energy materials and solar cells 2008-06, Vol.92 (6), p.651-659 |
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| container_title | Solar energy materials and solar cells |
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| creator | Chasteen, Stephanie V. Sholin, Veronica Carter, Sue A. Rumbles, Garry |
| description | We fabricate photovoltaics comprised layers and blends of a hole-transporting derivative of poly(
p-phenylene-vinylene) with a variety of electron-transporters: titanium dioxide, a cyano-substituted PPV, and a fullerene derivative (PCBM) to enhance device performance. Photovoltaic device characterization is combined with time-resolved and steady-state photoluminescence to understand the nature of the excited state and its effect upon device performance. We find that morphological differences, such as chain conformation or domain size, often overshadow the effect of charge transfer, so that device performance is not necessarily correlated with rapid decay times. Exciton generation is found to be a similarly important factor in most devices. These results provide insight into non-optimized device morphologies. |
| doi_str_mv | 10.1016/j.solmat.2008.01.014 |
| format | Article |
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| ispartof | Solar energy materials and solar cells, 2008-06, Vol.92 (6), p.651-659 |
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| subjects | Applied sciences Energy Equipments, installations and applications Exact sciences and technology Fullerene Heterojunction MATERIALS SCIENCE Natural energy Organic photovoltaic Photoluminescence Photovoltaic conversion SOLAR ENERGY Time-resolved |
| title | Towards optimization of device performance in conjugated polymer photovoltaics: Charge generation, transfer and transport in poly( p-phenylene-vinylene) polymer heterojunctions |
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