Hybrid zinc oxide conjugated polymer bulk heterojunction solar cells
Bulk heterojunction photovoltaic devices based on blends of a conjugated polymer poly[2-methoxy-5-(3‘,7‘-dimethyloctyloxy)-1,4-phenylenevinylene] (MDMO−PPV) as electron donor and crystalline ZnO nanoparticles (nc-ZnO) as electron acceptor have been studied. Composite nc-ZnO:MDMO−PPV films were cast...
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| Hauptverfasser: | , , , , |
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| Dokumenttyp: | Article (Journal) |
| Sprache: | Englisch |
| Veröffentlicht: |
April 9, 2005
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| In: |
The journal of physical chemistry. B, Biophysics, biomaterials, liquids, and soft matter
Year: 2005, Jahrgang: 109, Heft: 19, Pages: 9505-9516 |
| ISSN: | 1520-5207 |
| DOI: | 10.1021/jp050745x |
| Online-Zugang: | Verlag, Volltext: https://doi.org/10.1021/jp050745x
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| Verfasserangaben: | Waldo J.E. Beek, Martijn M. Wienk, Martijn Kemerink, Xiaoniu Yang, and René A.J. Janssen |
| Zusammenfassung: | Bulk heterojunction photovoltaic devices based on blends of a conjugated polymer poly[2-methoxy-5-(3‘,7‘-dimethyloctyloxy)-1,4-phenylenevinylene] (MDMO−PPV) as electron donor and crystalline ZnO nanoparticles (nc-ZnO) as electron acceptor have been studied. Composite nc-ZnO:MDMO−PPV films were cast from a common solvent mixture. Time-resolved pump−probe spectroscopy revealed that a photoinduced electron transfer from MDMO−PPV to nc-ZnO occurs in these blends on a sub-picosecond time scale and produces a long-lived (milliseconds) charge-separated state. The photovoltaic effect in devices, made by sandwiching the active nc-ZnO:MDMO−PPV layer between charge-selective electrodes, has been studied as a function of the ZnO concentration and the thickness of the layer. We also investigated changing the degree and type of mixing of the two components through the use of a surfactant for ZnO and by altering the size and shape of the nc-ZnO particles. Optimized devices have an estimated AM1.5 performance of 1.6% with incident photon to current conversion efficiencies up to 50%. Photoluminescence spectroscopy, atomic force microscopy, and transmission electron microscopy have been used to gain insight in the morphology of these blends. |
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| Beschreibung: | Gesehen am 16.12.2019 |
| Beschreibung: | Online Resource |
| ISSN: | 1520-5207 |
| DOI: | 10.1021/jp050745x |