کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
78267 | 49324 | 2013 | 6 صفحه PDF | دانلود رایگان |

Bis-indene fullerene (ICBA) is a highly symmetric molecule that tends to diffuse and aggregate into larger clusters, resulting in a huge horizontal phase separation when the master solvent vaporizes, in addition to a significant drop in power conversion efficiency (PCE). We found that Poly(3-hexylthiophene) (P3HT): indene-C60 bisadduct (ICBA) blended with a high-molecular-weight polyvinylcarbazole (PVK) film could effectively prevent the clustering of ICBA crystalline molecules, thereby improving the phase separation. Furthermore, PVK dispersed the ICBA:P3HT active layer in a more uniform manner, increasing open circuit voltage (Voc) and reducing photocurrent loss. As a result, the PCE of the device can be improved from 2.2% to 4.5%.
Graphical AbstractFigure optionsDownload as PowerPoint slideHighlights
► Inverted devices fabricated with solution-based process.
► High stability of the device over 1000 h storage in air.
► The aggregation cluster of ICBA is dispersed by additive PVK.
► Improved charge extraction by CuOx HTL with sol–gel process.
Journal: Solar Energy Materials and Solar Cells - Volume 113, June 2013, Pages 90–95