Heating‐induced aggregation control for efficient sequential‐cast organic solar cells
Abstract The aggregation and morphology within the photoactive layer is of considerable significance to boost the power‐conversion efficiency (PCE) of organic solar cells (OSCs). Herein, heating‐induced aggregation control of nonfullerene acceptor BTP‐eC7 during sequential casting was demonstrated....
| Main Authors: | , , , , , , , , , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2022-06-01
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| Series: | Aggregate |
| Subjects: | |
| Online Access: | https://doi.org/10.1002/agt2.104 |
| _version_ | 1818217324353683456 |
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| author | Donghui Li Chuanhang Guo Xue Zhang Baocai Du Pang Wang Shili Cheng Jinlong Cai Hui Wang Dan Liu Huifeng Yao Jianhui Hou Tao Wang |
| author_facet | Donghui Li Chuanhang Guo Xue Zhang Baocai Du Pang Wang Shili Cheng Jinlong Cai Hui Wang Dan Liu Huifeng Yao Jianhui Hou Tao Wang |
| author_sort | Donghui Li |
| collection | DOAJ |
| description | Abstract The aggregation and morphology within the photoactive layer is of considerable significance to boost the power‐conversion efficiency (PCE) of organic solar cells (OSCs). Herein, heating‐induced aggregation control of nonfullerene acceptor BTP‐eC7 during sequential casting was demonstrated. The large aggregates of BTP‐eC7 can be significantly reduced by sequential casting of BTP‐eC7 hot solution on the D18 fibrillar layer, and further eliminated by sequential casting of BTP‐eC7 hot solution on the D18 fibrillar layer heated on hot substrate, leading to stronger face‐on π–π stacking and appropriate phase separation within the photoactive layer to promote exciton dissociation and charge transfer. The maximum PCE of D18/BTP‐eC7 solar cells can be enhanced from 8.1% of room temperature casting to 15.9% of hot solution, hot‐substrate casting, therefore demonstrates that heating‐induced aggregation and sequential‐casting strategies are a promising approach in improving the performance of OSCs employing nonfullerene acceptors with limited solubility or strong crystallization ability. |
| first_indexed | 2024-12-12T07:06:03Z |
| format | Article |
| id | doaj.art-e08e527991574df4921502b04fff0f5d |
| institution | Directory Open Access Journal |
| issn | 2692-4560 |
| language | English |
| last_indexed | 2024-12-12T07:06:03Z |
| publishDate | 2022-06-01 |
| publisher | Wiley |
| record_format | Article |
| series | Aggregate |
| spelling | doaj.art-e08e527991574df4921502b04fff0f5d2022-12-22T00:33:45ZengWileyAggregate2692-45602022-06-0133n/an/a10.1002/agt2.104Heating‐induced aggregation control for efficient sequential‐cast organic solar cellsDonghui Li0Chuanhang Guo1Xue Zhang2Baocai Du3Pang Wang4Shili Cheng5Jinlong Cai6Hui Wang7Dan Liu8Huifeng Yao9Jianhui Hou10Tao Wang11School of Materials Science and Engineering Wuhan University of Technology Wuhan ChinaSchool of Materials Science and Engineering Wuhan University of Technology Wuhan ChinaSchool of Materials Science and Engineering Wuhan University of Technology Wuhan ChinaSchool of Materials Science and Engineering Wuhan University of Technology Wuhan ChinaSchool of Materials Science and Engineering Wuhan University of Technology Wuhan ChinaSchool of Materials Science and Engineering Wuhan University of Technology Wuhan ChinaSchool of Materials Science and Engineering Wuhan University of Technology Wuhan ChinaSchool of Materials Science and Engineering Wuhan University of Technology Wuhan ChinaSchool of Materials Science and Engineering Wuhan University of Technology Wuhan ChinaState Key Laboratory of Polymer Physics and Chemistry Beijing National Laboratory for Molecular Sciences CAS Research/Education Center for Excellence in Molecular Sciences Institute of Chemistry, Chinese Academy of Sciences Beijing ChinaState Key Laboratory of Polymer Physics and Chemistry Beijing National Laboratory for Molecular Sciences CAS Research/Education Center for Excellence in Molecular Sciences Institute of Chemistry, Chinese Academy of Sciences Beijing ChinaSchool of Materials Science and Engineering Wuhan University of Technology Wuhan ChinaAbstract The aggregation and morphology within the photoactive layer is of considerable significance to boost the power‐conversion efficiency (PCE) of organic solar cells (OSCs). Herein, heating‐induced aggregation control of nonfullerene acceptor BTP‐eC7 during sequential casting was demonstrated. The large aggregates of BTP‐eC7 can be significantly reduced by sequential casting of BTP‐eC7 hot solution on the D18 fibrillar layer, and further eliminated by sequential casting of BTP‐eC7 hot solution on the D18 fibrillar layer heated on hot substrate, leading to stronger face‐on π–π stacking and appropriate phase separation within the photoactive layer to promote exciton dissociation and charge transfer. The maximum PCE of D18/BTP‐eC7 solar cells can be enhanced from 8.1% of room temperature casting to 15.9% of hot solution, hot‐substrate casting, therefore demonstrates that heating‐induced aggregation and sequential‐casting strategies are a promising approach in improving the performance of OSCs employing nonfullerene acceptors with limited solubility or strong crystallization ability.https://doi.org/10.1002/agt2.104aggregationheatingnonfullerene acceptorsorganic solar cellssequentialcast |
| spellingShingle | Donghui Li Chuanhang Guo Xue Zhang Baocai Du Pang Wang Shili Cheng Jinlong Cai Hui Wang Dan Liu Huifeng Yao Jianhui Hou Tao Wang Heating‐induced aggregation control for efficient sequential‐cast organic solar cells Aggregate aggregation heating nonfullerene acceptors organic solar cells sequentialcast |
| title | Heating‐induced aggregation control for efficient sequential‐cast organic solar cells |
| title_full | Heating‐induced aggregation control for efficient sequential‐cast organic solar cells |
| title_fullStr | Heating‐induced aggregation control for efficient sequential‐cast organic solar cells |
| title_full_unstemmed | Heating‐induced aggregation control for efficient sequential‐cast organic solar cells |
| title_short | Heating‐induced aggregation control for efficient sequential‐cast organic solar cells |
| title_sort | heating induced aggregation control for efficient sequential cast organic solar cells |
| topic | aggregation heating nonfullerene acceptors organic solar cells sequentialcast |
| url | https://doi.org/10.1002/agt2.104 |
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