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Published on: March 2, 2021
Classification of additives for organic photovoltaic devices
Florian Machui1, Philipp Maisch, Ignasi Burgués-Ceballos
1Sol. Fab. of the Future, Bavarian Center for Applied Energy Research (ZAE Bayern), Haberstr. 2a, 91058 Erlangen (Germany). Florian.Machui@zae-bayern.de.
Abstract:
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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