论文标题
极性无定形有机半导体中电荷载体的双分子重组：随机能量景观的空间相关的影响
Bimolecular Recombination of Charge Carriers in Polar Amorphous Organic Semiconductors: Effect of Spatial Correlation of the Random Energy Landscape
论文作者
论文摘要
我们提出了一个简单的模型的双分子电荷载体重组中极性无定形有机半导体中的重组，其中通过永久性偶极子提供了能量疾病的主要部分，并表明重组速率常数可能比相应的langevin速率常数小得多。速率常数强大降低的原因是无定形偶极材料中随机能量景观的远距离空间相关性，即使没有空间相关性也不会改变Langevin速率常数。我们的研究表明，双分子重组的显着抑制可能发生在同质的非晶有机半导体中，并且不需要大规模的材料不均匀性。
We present a simple model of the bimolecular charge carrier recombination in polar amorphous organic semiconductors where the dominant part of the energetic disorder is provided by permanent dipoles and show that the recombination rate constant could be much smaller than the corresponding Langevin rate constant. The reason for the strong decrease of the rate constant is the long range spatial correlation of the random energy landscape in amorphous dipolar materials, without spatial correlation even strong disorder does not modify the Langevin rate constant. Our study shows that the significant suppression of the bimolecular recombination could take place in homogeneous amorphous organic semiconductors and does not need large scale inhomogeneity of the material.
