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首页> 外文期刊>Advanced Functional Materials >Effects of photo-oxidation on the performance of poly[2-methoxy-5-(3 ',7 '-dimethyloctyloxy)-1,4-phenylene vinylene]:[6,6]-phenyl C-61-butyric acid methyl ester solar cells
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Effects of photo-oxidation on the performance of poly[2-methoxy-5-(3 ',7 '-dimethyloctyloxy)-1,4-phenylene vinylene]:[6,6]-phenyl C-61-butyric acid methyl ester solar cells

机译：光氧化对聚[2-甲氧基-5-（3'，7'-二甲基辛氧基）-1,4-亚苯基亚乙烯基]：[6,6]-苯基C-61-丁酸甲酯性能的影响太阳能电池

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摘要

A study of the photo-oxidation of films of poly[2-methoxy-5-(3',7'-dimethyloctyloxy)-1,4-phenylene vinylene] (MDMO-PPV) blended with [6,6]-phenyl C-61-butyric acid methyl ester (PCBM), and solar cells based thereon, is presented. Solar-cell performance is degraded primarily through loss in short-circuit current density, J(SC). The effect of the same photodegradation treatment on the optical-absorption, charge-recombination, and charge-transport properties of the active layer is studied. It is concluded that the loss in J(SC) is primarily due to a reduction in charge-carrier mobility, owing to the creation of more deep traps in the polymer during photo-oxidation. Recombination is slowed down by the degradation and cannot therefore explain the loss in photocurrent. Optical absorption is reduced by photo-bleaching, but the size of this effect alone is insufficient to explain the loss in device photocurrent.
机译：与[6,6]-苯基C混合的聚[2-甲氧基-5-（3'，7'-二甲基辛氧基）-1,4-亚苯基亚乙烯基]（MDMO-PPV）薄膜的光氧化研究提出了-61-丁酸甲酯（PCBM）以及基于其的太阳能电池。太阳能电池的性能下降主要是由于短路电流密度J（SC）的损失。研究了相同的光降解处理对活性层的光吸收，电荷复合和电荷传输性质的影响。结论是，J（SC）的损失主要是由于光氧化过程中在聚合物中形成了更深的陷阱，从而导致电荷载流子迁移率降低。重组由于降解而减慢了速度，因此不能解释光电流的损失。光漂白会降低光吸收，但仅此效应的大小不足以解释器件光电流的损失。

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