High‐Performance Thick‐Film All‐Polymer Solar Cells Enabled by a Blade‐Coating Process Assisted by a Direct Nonuniform Electric Field
The incorporation of thick active layers (>300 nm) is an essential requirement for wide-scale industrial production of organic solar cells (OSCs). However, it is still challenging to achieve efficient thick film devices, in particular for all-polymer OSCs, which are generally considered the most stable type of OSCs. In this study, a simple yet effective method is introduced by using a direct current (DC) field to manipulate the morphology of bulk heterojunction (BHJ) films within all-polymer OSCs during a blade coating process. By utilizing this method, a favorable vertical phase distribution is achieved, thereby effectively reducing the electron percolation threshold and enhancing the overall device performance. With this, an outstanding efficiency of 17.59% is achieved for thick-film all-polymer devices by blade-coating, which is the best performance in this category. This study introduces a non-contact DC field method aimed at mitigating the fabrication challenges encountered when transitioning thick-film all-polymer systems from laboratory to manufacturing settings, and will potentially contributing to the advancement of the OSC industrialization.
Authors
- Maojie Zhang (ORCID: https://orcid.org/0000-0002-6102-5856)
- Xiang Hao (ORCID: https://orcid.org/0000-0001-6596-0529)
- Guangye Zhang (ORCID: https://orcid.org/0000-0002-2750-7720)
- Dongcheng Jiang (ORCID: https://orcid.org/0000-0002-8851-0026)
- Sai Ho Pun
- Xiaoyan Du (ORCID: https://orcid.org/0000-0002-2711-4839)
- Jie Min (ORCID: https://orcid.org/0000-0003-0447-3764)
- Jiawei Qiao
- Xinxin Xia (ORCID: https://orcid.org/0009-0007-5767-3758)
- Beibei Shi
- Rongkun Zhou (ORCID: https://orcid.org/0000-0002-0958-7579)
- He Yan (ORCID: https://orcid.org/0000-0003-1780-8308)
- Y.F. Li
- Ziwu Ji (ORCID: https://orcid.org/0000-0001-7690-4119)
- Rui Zhang (ORCID: https://orcid.org/0000-0002-1008-5832)
- Hang Yin
- Feng Chen (ORCID: https://orcid.org/0000-0002-9277-9810)
- Yufei Wang (ORCID: https://orcid.org/0000-0002-1960-3413)
- Feng wei Gao (ORCID: https://orcid.org/0000-0002-2582-1740)
- Peng Lu (ORCID: https://orcid.org/0000-0002-7333-4023)
- Jiangkai Sun
- Rui Sun (ORCID: https://orcid.org/0000-0003-1972-6541)
- Tao He (ORCID: https://orcid.org/0000-0002-8731-1498)
- Jicheng Yi (ORCID: https://orcid.org/0000-0003-2192-8441)
Institutions
- Linköping University (SE)
- Hong Kong Polytechnic University (HK)
- Shandong University (CN)
- Hong Kong University of Science and Technology (HK)
- Wuhan University (CN)
- Shandong Management University (CN)
- Shenzhen Technology University (CN)
- University of Hong Kong (HK)
Publication Details
- Journal
- Advanced Materials
- Published
- 2025-08-31
- DOI
- https://doi.org/10.1002/adma.202505313
- Citations
- 2
- Primary Topic
- Organic Electronics and Photovoltaics
- Type
- article
- Field-Weighted Citation Impact
- 1.46
Funders
- Shandong University
- National Natural Science Foundation of China
- Natural Science Foundation of Shandong Province