Molecular orbital energy level modulation through incorporation of selenium and fluorine into conjugated polymers for organic photovoltaic cells

Wenliu Zhuang; Hongyu Zhen; Renee Kroon; Zheng Tang; Stefan Hellström; Lintao Hou; Ergang Wang; Desta Gedefaw; Olle Inganäs; Fengling Zhang; Mats R. Andersson

doi:10.1039/C3TA13040A

Molecular orbital energy level modulation through incorporation of selenium and fluorine into conjugated polymers for organic photovoltaic cells†

Wenliu Zhuang,*^a Hongyu Zhen,^bc Renee Kroon,^a Zheng Tang,^b Stefan Hellström,^a Lintao Hou,^b Ergang Wang,^a Desta Gedefaw,^a Olle Inganäs,^b Fengling Zhang^b and Mats R. Andersson*^a

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^a Department of Chemical and Biological Engineering/Polymer Technology, Chalmers University of Technology, SE-412 96 Göteborg, Sweden
E-mail: mats.andersson@chalmers.se, wenliu@chalmers.se
Fax: +46 31 772 3418
Tel: +46 31 772 3401

^b Biomolecular and Organic Electronics, IFM, and Center of Organic Electronics, Linköping University, SE-581 83 Linköping, Sweden

^c State Key Laboratory of Modern Optical Instrumentation, Zhejiang University, Hangzhou 310027, China

Abstract

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.

Journal of Materials Chemistry A

Molecular orbital energy level modulation through incorporation of selenium and fluorine into conjugated polymers for organic photovoltaic cells†

Abstract

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Molecular orbital energy level modulation through incorporation of selenium and fluorine into conjugated polymers for organic photovoltaic cells

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