Enhancing the Molecular Order and Vertical Component Distribution of the P3HT/O-IDTBR System during Layer-by-Layer Processing
Yadi Liu
State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022 P. R. China
School of Applied Chemistry and Engineering, University of Science and Technology of China, Hefei, 230026 P. R. China
Search for more papers by this authorTao Zhang
State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022 P. R. China
School of Applied Chemistry and Engineering, University of Science and Technology of China, Hefei, 230026 P. R. China
Search for more papers by this authorCorresponding Author
Rui Zhang
Department of Physics, Chemistry and Biology (IFM), Linköping University, Linköping, 58183 Sweden
E-mail: [email protected]; [email protected]; [email protected]
Search for more papers by this authorJian Guan
State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022 P. R. China
School of Applied Chemistry and Engineering, University of Science and Technology of China, Hefei, 230026 P. R. China
Search for more papers by this authorJiaqi Pan
State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022 P. R. China
School of Applied Chemistry and Engineering, University of Science and Technology of China, Hefei, 230026 P. R. China
Search for more papers by this authorXinhong Yu
State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022 P. R. China
Search for more papers by this authorCorresponding Author
Qiang Zhang
State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022 P. R. China
E-mail: [email protected]; [email protected]; [email protected]
Search for more papers by this authorCorresponding Author
Yanchun Han
State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022 P. R. China
School of Applied Chemistry and Engineering, University of Science and Technology of China, Hefei, 230026 P. R. China
E-mail: [email protected]; [email protected]; [email protected]
Search for more papers by this authorYadi Liu
State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022 P. R. China
School of Applied Chemistry and Engineering, University of Science and Technology of China, Hefei, 230026 P. R. China
Search for more papers by this authorTao Zhang
State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022 P. R. China
School of Applied Chemistry and Engineering, University of Science and Technology of China, Hefei, 230026 P. R. China
Search for more papers by this authorCorresponding Author
Rui Zhang
Department of Physics, Chemistry and Biology (IFM), Linköping University, Linköping, 58183 Sweden
E-mail: [email protected]; [email protected]; [email protected]
Search for more papers by this authorJian Guan
State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022 P. R. China
School of Applied Chemistry and Engineering, University of Science and Technology of China, Hefei, 230026 P. R. China
Search for more papers by this authorJiaqi Pan
State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022 P. R. China
School of Applied Chemistry and Engineering, University of Science and Technology of China, Hefei, 230026 P. R. China
Search for more papers by this authorXinhong Yu
State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022 P. R. China
Search for more papers by this authorCorresponding Author
Qiang Zhang
State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022 P. R. China
E-mail: [email protected]; [email protected]; [email protected]
Search for more papers by this authorCorresponding Author
Yanchun Han
State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022 P. R. China
School of Applied Chemistry and Engineering, University of Science and Technology of China, Hefei, 230026 P. R. China
E-mail: [email protected]; [email protected]; [email protected]
Search for more papers by this authorAbstract
The molecular order and vertical component distribution are critical to enhance the charge transport in layer-by-layer (LbL) processed active layer. However, the excessive inter-diffusion between donor and acceptor layers during LbL processing irrepressibly reduces their ordered packing. Herein, a novel tactic to optimize the molecular order and vertical morphology of the active layer through suppressing the deep penetration of (5Z,5′Z)-5,5′-((7,7′-(4,4,9,9-tetraoctyl-4,9-dihydro-s-indaceno[1,2-b:5,6 -b′]dithiophene-2,7-diyl)bis(benzo[c][1,2,5]thiadiazole-7,4-diyl))bis(methanylylidene)) bis(3-ethyl-2-thioxothiazolidin-4-one) (O-IDTBR) to poly(3-hexylthiophene) (P3HT) film during LbL processing is proposed. This is enabled by inducing the formation of P3HT nanofibers through ultraviolet (UV) irradiation and solution aging. During the LbL processing, these nanofibers with high crystallinity reduce the damage of O-IDTBR solution to P3HT film and restrict the penetration of O-IDTBR into P3HT matrix. As a result, the P3HT nanofibers are preserved and the degree of vertical phase separation is enlarged in the LbL-processed film. Meanwhile, the molecular order of both components is enhanced. The resulting morphology that featured as intertwined P3HT nanofibers/O-IDTBR network efficiently promotes charge transport and extraction, boosting the power conversion efficiency (PCE) of the devices from 6.70 ± 0.12% to 7.71 ± 0.10%.
Conflict of Interest
The authors declare no conflict of interest.
Open Research
Data Availability Statement
The data that support the findings of this study are available from the corresponding author upon reasonable request.
Supporting Information
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