Method for improving mass-production yield of large-area organic solar cells
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United States of America Patent
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Jul 18, 2017
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Jun 15, 2017
app pub date -
Dec 15, 2015
filing date -
Dec 15, 2015
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Abstract
The present invention discloses a method for improving mass-production yield of large-area organic solar cells for forming the active layer using the roll-to-roll process. The active layer includes low-bandgap high-polymer PTB7, Fullerenes derivative PC71BM, and high-boiling-point additives. The addition of the high-boiling-point additives can enhance the efficiency of organic solar cells effectively. In the roll-to-roll process according to the present invention, the drying temperature for the wet film is controlled for controlling the content of additives in the dry film. Thereby, the stability of the overall mass production and the device yield can be both improved.
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