Hybrid Polymer Solar Cells from Highly Reactive Diethylzinc: MDMO–PPV versus P3HT
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- 作者：Date J. D. Moet ; L. Jan Anton Koster ; Bert de Boer ; Paul W. M. Blom
- 刊名：Chemistry of Materials
- 出版年：2007
- 出版时间：November 27, 2007
- 年：2007
- 卷：19
- 期：24
- 页码：5856 - 5861
- 全文大小：112K
- 年卷期：v.19,no.24(November 27, 2007)
- ISSN：1520-5002
文摘
The degradation of poly[2-methoxy-5-(3′,7′-dimethyloctyloxy)-p-phenylene vinylene] (MDMO–PPV) during the processing of hybrid organic/inorganic bulk-heterojunction solar cells with zinc oxide (ZnO) from a molecular precursor as acceptor is reported. Upon addition of diethylzinc, the absorption spectrum of MDMO–PPV shifts to the blue, and hole transport through the polymer deteriorates dramatically, indicating a reduction of the conjugation length of the polymer backbone. To prevent polymer degradation through the breaking of trans vinyl bonds, regioregular poly(3-hexylthiophene) (P3HT) is introduced as the electron donor. This system of P3HT and precursor ZnO reveals an unchanged UV–vis absorption profile and zero-field hole mobility with respect to the pristine polymer as well as an improved photovoltaic performance with an estimated power conversion efficiency of 1.4% (AM1.5 global reference spectrum, 1 kW/m2).