EAN: 9783319100968

ORGANIC SOLAR CELLS - WOLFGANG TRESS GEBUNDEN

This book covers in a textbook-like fashion the basics or organic solar cells  addressing the
limits of photovoltaic energy conversion and giving a well-illustrated introduction to
molecular electronics with focus on the working principle and characterization of organic solar
cells. Further chapters based on the author¿s dissertation focus on the electrical processes in
organic solar cells by presenting a detailed drift-diffusion approach to describe exciton
separation and charge-carrier transport and extraction. The results  although elaborated on
small-molecule solar cells and with focus on the zinc phthalocyanine: C60 material system  are
of general nature. They propose and demonstrate experimental approaches for getting a deeper
understanding of the dominating processes in amorphous thin-film based solar cells in general.
The main focus is on the interpretation of the current-voltage characteristics (J-V curve).
This very standard measurement technique for a solar cell reflects the electrical processes in
the device. Comparing experimental to simulation data  the author discusses the reasons for
S-Shaped J-V curves  the role of charge carrier mobilities and energy barriers at interfaces 
the dominating recombination mechanisms  the charge carrier generation profile  and other
efficiency-limiting processes in organic solar cells. The book concludes with an illustrative
guideline on how to identify reasons for changes in the J-V curve. This book is a suitable
introduction for students in engineering  physics  material science  and chemistry starting in
the field of organic or hybrid thin-film photovoltaics. It is just as valuable for
professionals and experimentalists who analyze solar cell devices.

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