F. Padinger, R.S. Rittberger and N.S. Sariciftci Effects of Postproduction Treatment on Plastic Solar Cells Advanced Functional Materials 13
An increase in both the external quantum efficiency and the short-circuit current of organic polymer-based solar cells can be achieved by using a simple postproduction process. Poly(3-hexylthiophene) [6,6]-phenyl C61-butyric acid methyl ester-based solar cells have been subjected to a tempering cycle at elevated temperatures whilst simultaneously applying an external electrical field. Using this treatment, an enhancement of the short-circuit current density to 8.5 mA cm–2 under illumination with white light of 800 W m–2 and an increase in external quantum efficiency to 70 % are demonstrated.
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