Effects of Solvent Mixtures on the Nanoscale Phase Separation in Polymer Solar Cells
Effects of Solvent Mixtures on the Nanoscale Phase Separation in Polymer Solar Cells
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DOI：
10.1002/adfm.200701459
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发表时间：
2008-06
影响因子：
19
通讯作者：
Yan Yao;Jianhui Hou;Zheng Xu;Gang Li;Yang Yang-Yang
中科院分区：
文献类型：
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作者：
Yan Yao;Jianhui Hou;Zheng Xu;Gang Li;Yang Yang-Yang
混合溶剂法已被证明是一种很有前途的方法来修改聚合物太阳能电池的纳米形态。这项工作旨在了解添加剂在混合溶剂中的独特作用，以及在非平衡旋涂过程中优化的纳米级相分离如何横向和纵向发展。我们发现，在活性层中的施主/受主组分可以相分离成一个最佳的形态与添加剂。在AFM、TEM和XPS结果的支持下，我们提出了一个模型，并确定了添加剂的相关参数，如溶解度和蒸气压。发现其他添加剂也显示出改善聚合物太阳能电池性能的能力。
The mixed solvent approach has been demonstrated as a promising method to modify nanomorphology in polymer solar cells. This work aims to understand the unique role of the additive in the mixture solvent and how the optimized nanoscale phase separation develops laterally and vertically during the non‐equilibrium spin‐coating process. We found the donor/acceptor components in the active layer can phase separate into an optimum morphology with the additive. Supported by AFM, TEM and XPS results, we proposed a model and identified relevant parameters for the additive such as solubility and vapor pressures. Other additives are discovered to show the ability to improve polymer solar cell performance as well.