Dipole induced anomalous S-shape I-V curves in polymer solar cells
Dipole induced anomalous S-shape I-V curves in polymer solar cells
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DOI：
10.1063/1.3117513
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发表时间：
2009-05-01
影响因子：
3.2
通讯作者：
Yang, Yang
中科院分区：
文献类型：
--
作者：
Kumar, Ankit;Sista, Srinivas;Yang, Yang
在有机太阳能电池的I-V曲线中有时可以看到扭结。在文献中，电荷阻塞被推测为负责这种异常特征。在这篇文章中，我们使用聚（3-己基噻吩）：[6，6]-苯基-C-61-丁酸甲酯作为我们的模型聚合物系统，并研究不同的器件结构，使用紫外光电子能谱作为我们的主要工具，以调查这种S形扭结的原因。我们把这种反常的特征归因于强界面偶极子的存在。我们进一步提出了一个模型的基础上的标准设置的泊松方程，连续性方程，电流密度方程，包括漂移和扩散组件。(C)2009年美国物理学会。[DOI：10.1063/1.3117513]
A kink is sometimes seen in the I-V curves for organic solar cells. In literature charge blocking has been speculated to be responsible for such kind of anomalous features. In this manuscript, we use poly (3-hexylthiophene):[6, 6]-phenyl-C-61-butyric acid methyl ester as our model polymer system and investigate different device structures using ultraviolet photoelectron spectroscopy as our primary tool to investigate the reason for this S-shaped kink. We attribute this anomalous feature to the presence of strong interface dipoles. We further propose a model based on the standard set of Poisson equation, continuity equation, and current density equations including both drift and diffusion components. (C) 2009 American Institute of Physics. [DOI: 10.1063/1.3117513]