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首页> 外文期刊>Advanced Functional Materials >Time-dependent Morphology Evolution By Annealing Processes On Polymer:fullerene Blend Solar Cells
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Time-dependent Morphology Evolution By Annealing Processes On Polymer:fullerene Blend Solar Cells

机译：聚合物：富勒烯共混太阳能电池上退火工艺的时变形态演化

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摘要

Changes in the nanoscaie morphologies of the blend films of poly (3-hexylthiophene) (P3HT) and [6,6]-phenyl-C_(67)-butyric acid methyl ester (PCBM), for high-performance bulk-heterojunction (BHJ) solar celts, are compared and investigated for two annealing treatments with different morphology evolution time scales, having special consideration for the diffusion and aggregation of PCBM molecules. An annealing condition with relatively fast diffusion and aggregation of the PCBM molecules during P3HT crystallization results in poor BHJ morphology because of prevention of the formation of the more elongated P3HT crystals. However, an annealing condition, accelerating PCBM diffusion after the formation of a well-ordered morphology, results in a relatively stable morphology with less destruction of crystalline P3HT. Based on these results, an effective strategy for determining an optimized annealing treatment is suggested that considers the effect of relative kinetics on the crystallization of the components for a blend film with a new BHJ materials pair, upon which BHJ solar cells are based.
机译：聚（3-己基噻吩）（P3HT）和[6,6]-苯基-C_（67）-丁酸甲酯（PCBM）的共混膜的纳米尺度形态变化，用于高性能本体异质结（BHJ） ）对两种不同形态演变时间尺度的退火处理进行了比较和研究，特别考虑了PCBM分子的扩散和聚集。在P3HT结晶过程中，PCBM分子扩散和聚集相对较快的退火条件会导致BHJ形态变差，这是因为阻止了更长的P3HT晶体的形成。但是，退火条件会加快形成良好形态后PCBM的扩散，从而导致形态相对稳定，且对P3HT晶体的破坏较小。基于这些结果，提出了一种确定最佳退火处理的有效策略，该策略考虑了相对动力学对具有新型BHJ材料对的混合膜中BHJ太阳能电池所基于的成分结晶的影响。

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