Organic photovoltaics (OPVs)
represent a promising emerging technology for clean and renewable energy
generation. Recent developments in the field of small molecule acceptors
combined with an improved understanding of the device operation have helped
boost the power conversion efficiency (PCE) of organic solar cells to over 18%.
However, further improvement in materials, processing and microstructural
engineering of the photoactive layer, charge transport interlayers and cell
architecture, would be required in order to attain the maximum theoretically
predicted level of performance. In this talk, I will discuss key recent
developments in the field of OPVs with a focus on practical strategies for
boosting the overall cell performance. Particular emphasis will be placed on
the use of electronic dopants and advanced interlayer technologies for
improving the cell’s efficiency and operational stability. Finally, the design
and implementation of multi-junction cell architectures and their various
advantages, but also limitations, will be discussed.