Inverted organic solar cells comprising a solution-processed cesium fluoride interlayer
Inverted organic solar cells comprising a solution-processed cesium fluoride interlayer
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DOI：
10.1063/1.3548860
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发表时间：
2011-02
影响因子：
4
通讯作者：
Manuel Reinhard;J. Hanisch;Zhenhao Zhang;E. Ahlswede;A. Colsmann;U. Lemmer
中科院分区：
文献类型：
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作者：
Manuel Reinhard;J. Hanisch;Zhenhao Zhang;E. Ahlswede;A. Colsmann;U. Lemmer
我们研究了溶液处理的氟化铯（CsF）夹层对包括聚（3-己基噻吩-2，5-二基）：[6，6]-苯基C61-丁酸甲酯的共混物的倒置聚合物太阳能电池的性能的影响。CsF层的厚度在电流-电压特性方面通过溶液中固体含量的变化来优化。电容-电压特性揭示了与没有CsF层的器件相比，阴极界面处的内建电压偏移约0.3 V，从而引起开路电压增加相同的值。Cs+和F+离子的垂直分布的二次离子质谱研究，表明强扩散的碱性氟化物到有机层堆叠。
We investigate the influence of solution-processed cesium fluoride (CsF) interlayers on the performance of inverted polymer solar cells comprising a blend of poly(3-hexylthiophene-2,5-diyl):[6,6]-phenyl C61-butyric acid methyl ester. The thickness of the CsF layer is optimized in terms of current-voltage characteristics by a variation of the solid content in solution. Capacitance-voltage characteristics reveal a shift of the built-in voltage at the cathode interface by about 0.3 V as compared to devices without a CsF layer, giving rise to an increase in open-circuit voltage by the same value. The vertical distribution of Cs+ and F+ ions is studied by secondary ion mass spectroscopy, indicating a strong diffusion of the alkaline fluoride into the organic layer stack.