The Molecular Structure of Polymer-Fullerene Composite Solar Cells and Its Influence on Device Performance
The Molecular Structure of Polymer-Fullerene Composite Solar Cells and Its Influence on Device Performance
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DOI：
10.1021/ma902211u
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发表时间：
2010-02
期刊：
影响因子：
5.5
通讯作者：
R. Beal;A. Stavrinadis;J. Warner;Jason M. Smith;H. Assender;A. Watt
中科院分区：
文献类型：
--
作者：
R. Beal;A. Stavrinadis;J. Warner;Jason M. Smith;H. Assender;A. Watt
了解聚合物太阳能电池的纳米形态是提高设备效率的关键。详细研究了工艺条件下聚合物太阳能电池形态在分子水平上的实时变化。使用低电压、高分辨率电子显微镜 (LVHREM)，我们实时观察富含 PCBM 的域迁移机制，并为本体异质结内的垂直偏析以及 P3HT 和 PCBM 结晶度的增加提供证据。研究结果强调了这样一个事实：P3HT:PCBM本体异质结形态应该在四相、三维、非平衡系统的框架内观察。
Understanding the nanomorphology of polymer-based solar cells is key to improving device efficiencies. A detailed study of the changes in polymer solar cell morphology at the molecular level and in real time under process conditions is presented. Using low voltage, high resolution electron microscopy (LVHREM) we observe the mechanisms of PCBM-rich domain migration in real time and provide evidence for vertical segregation within the bulk heterojunction and increased crystallinity of both P3HT and PCBM. The results of the study highlights the fact that P3HT:PCBM bulk heterojunction morphology should be viewed within the framework of a four-phase, three-dimensional, nonequilibrium system.