Advanced Electrical and Optical Characterization of Recombination in Organic Solar Cells
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Beschreibung
This work investigates recombination, the energetics of charge carriers and the resulting open circuit voltage in polymer based organic solar cells by charge extraction and temperature dependent measurements. The limitations of commonly used transient characterization techniques are elaborated. In addition, the recombination at electrode interfaces and the impact of thin film optics on luminescence spectra are elucidated in detail.
The research and development of organic solar cells is driven by the desire for cheap and sustainable renewable energy sources. While promising progress in cell efficiency has been achieved in recent years, there are still open questions about device physics and fundamental limitations of the performance of this arising technology.
This work investigates the recombination and energetics of photogenerated charge carriers and the resulting open circuit voltage in polymer based organic solar cells by charge extraction and temperature dependent measurements. The applicability and limitations of transient characterization techniques commonly used in the field of organic photovoltaics are elaborated. In addition, recombination at electrode interfaces and the impact of thin film optics on luminescence spectra are studied and described in detail leading to a more comprehensive understanding of device physics governing the characterization of organic solar cells.
Autor*in
Mathias List
Themen in »Advanced Electrical and Optical Characterization of Recombination in Organic Solar Cells«
Fraunhofer ISE organic solar cells organic photovoltaic recombination luminescence spectroscopy charge transfer complex charge extraction Organische Solarzellen Organische Photovoltaik Rekombination Lumineszenzspektroskopie Charge-Transfer Komplex Ladungsträger Extraktion Renewable energy engineers material scientists