预测溶液加工聚合物的形态:富勒烯混合物.
Sandra Kouijzer1, Jasper J Michels, Mauricio van den Berg
1Molecular Materials and Nanosystems, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands.
研究人员开发了一个模型来预测聚合物的形态:在干燥过程中,富勒烯太阳能电池. 这个模型将干燥时间与特征大小和烯度联系起来,有助于优化设备性能.
科学领域:
- 材料科学 材料科学 材料科学
- 有机电子 有机电子
- 太阳能光伏发电是如何实现的
背景情况:
- 聚合物:富勒烯薄膜是有机光伏电池的关键.
- 膜干燥期间的形态控制对于设备性能至关重要,但人们对其了解甚少.
- 预测高性能设备的最佳处理条件仍然是一个挑战.
研究的目的:
- 在聚合物:富勒烯混合物中形成形态的预测模型的开发.
- 了解干燥过程对混合物纳米结构的影响.
- 为了将形态与光伏设备性能相关联.
主要方法:
- 试验性研究聚合物:富勒烯混合物 (PDPP5T:[70]PCBM) 造从.
- 基于Flory-Huggins自由能量和界面相互作用的热力学模型的开发.
- 在薄膜干燥过程中分析螺旋体液体-液体脱混合.
主要成果:
- 在干燥过程中,脊柱液体-液体脱混合驱动了观察到的混合形态.
- 模型预测随着干燥时间增加特征大小.
- 模型预测,随着干燥时间的增加,聚合物矩阵中的富勒烯度会下降.
结论:
- 开发的模型准确地预测了膜干燥过程中的形态演变.
- 了解干燥诱导的脱对于优化光伏性能至关重要.
- 这项工作代表了对有机电子学形态学的预测建模的基本步骤.
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