|Title:||Mechanistic Insights into the Effect of Polymer Regioregularity on the Thermal Stability of Polymer Solar Cells||Authors:||Tsao, Cheng Si
Liu, Wei Shin
Huang, Yu Ching
|Keywords:||bulk heterojunction | GISAXS | GIWAXS | nanostructure | PCBM aggregation | polymer solar cell | thermal stability||Issue Date:||1-Jan-2019||Journal Volume:||11||Journal Issue:||43||Source:||ACS Applied Materials and Interfaces||Abstract:||
Copyright © 2019 American Chemical Society. Thermal stability is a bottleneck toward commercialization of polymer solar cells (PSCs). The effect of PCBM aggregation on a multilength scale on the bulk-heterojunction (BHJ) structure, performance, and thermal stability of PSCs is studied here by grazing-incidence small- and wide-angle X-ray scattering. The evolution of hierarchical BHJ structures of a blend film tuned by regioregularity of polymers from the as-cast state to the thermally unstable state is systematically investigated. The thermal stability of PSCs with high polymer regioregularity values can be improved because of the good mutual interaction between polymer crystallites and fullerene aggregates. The insights obtained from this study provide an approach to manipulate the film structure on a multilength scale and to enhance the thermal stability of P3HT-based PSCs.
|Appears in Collections:||凝態科學研究中心|
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