Graeme Williams, Qi Wang and Hany Aziz The Photo-Stability of Polymer Solar Cells: Contact Photo-Degradation and the Benefits of Interfacial Layers Advanced Functional Materials 23
Exposure of organic solar cells (OSCs) to light results in degradation in all OSC parameters, even in inert environments. The use of electron extraction layers (EELs) in between the organic layer and an Al layer can largely suppress contact photo-degradation and enhance OSC photo-stability. Lithium acetylacetonate, as a new EEL material, provides efficiency improvement on par with the ubiquitous LiF, but with some additional stability improvement.
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