Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, Ontario, M5S 3H6 Canada.
ACS Appl Mater Interfaces. 2013 Aug 28;5(16):8038-43. doi: 10.1021/am402100f. Epub 2013 Jul 24.
We investigate the evolution of the electron mobility of two different acceptors, [6,6]-phenyl C71 butyric acid methyl ester (PC71BM) and indene-C60 bisadduct (ICBA), in a poly(3-hexylthiophene) blend solar cell during a prolonged thermal aging process. High electron mobility does not correlate with the best device performance in our study of the P3HT:PC71BM and P3HT:ICBA systems. Very little changes are observed in the polymer crystallinity as a function of time. The evolution of the acceptor appears to be the dominant factor that leads to long-term changes in the device performance. The electron mobility evolves differently in PC71BM and ICBA systems, which highlights the importance of the fullerene molecular structure.
我们研究了在聚（3-己基噻吩）太阳能电池中，两种不同受体[6,6]-苯基 C71 丁酸甲酯（PC71BM）和茚并[2,1-b]噻吩-C60 双加成物（ICBA）的电子迁移率在长时间热老化过程中的演变。在我们对 P3HT：PC71BM 和 P3HT：ICBA 体系的研究中，高电子迁移率与最佳器件性能并不相关。随着时间的推移，聚合物结晶度几乎没有变化。受体的演变似乎是导致器件性能长期变化的主要因素。电子迁移率在 PC71BM 和 ICBA 体系中表现出不同的演变，这突出了富勒烯分子结构的重要性。
