Light-induced degradation of the P3HT-based solar cells active layer
Light-induced degradation of the P3HT-based solar cells active layer
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DOI：
10.1016/j.solmat.2010.09.021
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发表时间：
2011-05
影响因子：
6.9
通讯作者：
M. Manceau;A. Rivaton;J. Gardette;S. Guillerez;N. Lemaître
中科院分区：
文献类型：
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作者：
M. Manceau;A. Rivaton;J. Gardette;S. Guillerez;N. Lemaître
我们报告的影响，长期人工加速老化的有机太阳能电池的活性层在没有氧气。样品由沉积在聚（3，4-乙撑二氧噻吩）：聚（苯乙烯磺酸盐）（PEDOT：PSS）上的聚（3-己基噻吩）（P3 HT）和[6，6]-苯基C61丁酸甲酯（PCBM）形成的体异质结组成。首先，进行一组实验以研究由长时间暴露于紫外-可见光引起的改性。记录到吸光度的逐渐降低，并且TEM结果清楚地表明初始形态在长照射时间后是不稳定的。其次，我们发现，PEDOT：PSS的退火温度强烈影响的活性层的退化。实际上，PEDOT：PSS退火温度的增加导致稳定性的重要改善。第三，在通过改变P3 HT类型、聚合物：富勒烯重量比和溶剂性质获得的不同活性层之间进行比较。正如预期的那样，聚合物：富勒烯重量比显示出显著影响降解动力学。老化对光伏性能的影响进行了探讨，并外推到户外暴露的数据进行了讨论。
We report on the effects of long-term artificial accelerated ageing on the active layer of organic solar cells in the absence of oxygen. The samples were composed of a bulk heterojunction formed by poly(3-hexylthiophene) (P3HT) and [6,6]-phenyl C61butyric acid methyl ester (PCBM) deposited on poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS). First, a set of experiments was performed to study the modifications resulting from prolonged exposure to UV–vis light. A gradual decrease in absorbance was recorded, and TEM results clearly indicated that the initial morphology was unstable upon long irradiation times. Second, we revealed that the annealing temperature of PEDOT:PSS strongly influenced the degradation of the active layer. Indeed, an increase in the PEDOT:PSS annealing temperature resulted in an important improvement in stability. Third, a comparison was made between different active layers obtained by changing the P3HT type, polymer:fullerene weight ratio and solvent nature. As expected, the polymer:fullerene weight ratio was shown to significantly impact the degradation kinetics. The ageing effects on the photovoltaic properties were then explored, and extrapolation of the data to outdoor exposure is also discussed.