Molecular orbital energy level modulation through incorporation of selenium and fluorine into conjugated polymers for organic photovoltaic cells
2013
Zhuang, Wenliu | Zhen, Hongyu | Kroon, Renee | Tang, Zheng | Hellström, Stefan | Hou, Lintao | Wang, Ergang | Gedefaw, Desta | Inganäs, Olle | Zhang, Fengling | Andersson, Mats R.
We demonstrated an effective chemical approach to modulate the energy levels of conjugated polymers by synergistically combining fluorine substitution and thiophene–selenophene exchange. Such modifications from TQ1 resulted in a significantly enhanced open-circuit voltage up to 1.0 V while retaining high photovoltaic performance.
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