Ageing of DSSC studied by electroluminescence and transmission imaging
Ageing of DSSC studied by electroluminescence and transmission imaging
复制标题
通过电致发光和透射成像研究 DSSC 的老化
DOI：
10.1016/j.solmat.2013.05.029
复制
发表时间：
2013
影响因子：
6.9
通讯作者：
M. Topič
中科院分区：
文献类型：
--
作者：
U. Krašovec;M. Bokalič;M. Topič
使用电致发光（EL）和透射成像，在短路（SC）和开路（OC）模式下对基于离子液体的染料敏化太阳能电池进行了户外稳定性测试。该研究表明，老化条件对太阳能电池参数在从零到31千瓦时/平方米（夏季四天）的太阳辐射暴露期间的稳定性有显着影响。初始暴露对于所有性能参数都是有益的，而不管电池在哪种操作模式下老化。在SC模式下8 kWh/m2的电池老化后，所有参数都下降，主要是Jsc，因此η下降，而在OC模式下继续老化则会略微增加Voc，因此η下降。EL成像表明，老化，无论操作模式，是与EL非活性区域的增长，出现黑点或缺陷，我们与碘物质的形成，在共聚焦显微镜下捕获的电解质。稳定性测试表明，对于以SC模式操作的电池，缺陷的增长更明显，这主要降低了Jsc的稳定性。
Outdoor stability testing of ionic liquid based dye sensitised solar cells under short circuit (SC) and open circuit (OC) modes has been followed using electroluminescence (EL) and transmission imaging. The study showed a significant influence of the ageing conditions on the stability of the solar cell parameters in the exposure period from zero up to 31 kWh/m2(four summer days) of solar irradiation. Initial exposure is beneficial for all performance parameters regardless the operating mode under which the cells were aged. After 8 kWh/m2ageing of the cells in SC mode downgrades all parameters, mainlyJscand consequentlyη, while continues ageing in OC mode slightly increasesVocand consequentlyη. The EL imaging demonstrated that ageing, regardless the operating mode, is associated with the growth of the EL inactive areas that appear as black spots or defects, which we associate with the formation of iodine species in the electrolyte that have been captured under confocal microscope. The stability testing demonstrates that growth of the defects is more pronounced for cells operated in SC mode, which primarily reduces stability ofJsc.