Journal
CHEMPHYSCHEM
Volume 16, Issue 6, Pages 1275-1280Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/cphc.201402734
Keywords
additives; polymers; fullerenes; ink formulation; organic photovoltaics
Funding
- European Commission [288565]
- Synthetic Carbon Allotropes [SFB953]
- Cluster of Excellence 'Engineering of Advanced Materials' at the University of Erlangen-Nuremberg - German Research Foundation (DFG)
- Bavarian state government
- German Research Foundation (DFG) [BR 4031/2-2]
- Solar Technologies go Hybrid (SolTech) projects
- Umweltvertragliche Hocheffiziente Organische Solarzellen (UOS) [64845]
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The use of additives to improve the performance of organic photovoltaic cells has been intensely researched in recent years. However, so far, no system has been reported for the classification of additives and their functions. In this report, a system for classifying additives according to the fundamental mechanism by which they influence microstructure formation for P3HT:PCBM is suggested. The major parameters used for their classification are solubility and drying kinetics. Both are discussed in detail and their consequences on processing are analyzed. Furthermore, a general mechanism to classify the impact of additives on structure formation is suggested and discussed for different materials relevant to organic photovoltaic devices.
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