Achieving Efficient Intrinsically Stretchable Organic Photovoltaics with a Conjugated and Elastomeric Dual‐Network Morphology
Abstract Stretchable organic photovoltaics (OPVs) are pivotal for advancing conformable electronics, yet achieving both efficient and intrinsically stretchable OPVs remains a significant challenge. The main issue is maintaining electronic and mechanical properties under deformation. Here, a ternary blend system, PTzBI‐oF:PYIT:EVA is presented, incorporating ethylene‐vinyl acetate (EVA) to establish a conjugated and elastomeric dual‐network morphology. The elastomer network dissipates applied stress, preserving the crystalline packing of the conjugated network and enabling improved mechanical stability of charge carrier generation and transport. Specifically, with 15% EVA content, the ternary blend achieved a power conversion efficiency (PCE) of 15.28% in rigid devices and exhibited a crack onset strain of 17.23%. Notably, the stretchable OPVs retained over 80% of their initial PCE under 30% strain. These findings underscore the potential of conjugated and elastomeric dual‐network morphology in developing high‐performance stretchable electronics for various applications.
Authors
- Mingke Li (ORCID: https://orcid.org/0000-0001-6310-4964)
- Jiaming Wu (ORCID: https://orcid.org/0000-0001-9198-3038)
- Lei Ying (ORCID: https://orcid.org/0000-0003-1137-2355)
- Wenkai Zhong (ORCID: https://orcid.org/0000-0001-8333-4898)
- Dongge Ma (ORCID: https://orcid.org/0000-0001-7779-6113)
- Xiaowei Zhang (ORCID: https://orcid.org/0000-0001-8974-9963)
- Chuqi Shi
- Cheng Wang (ORCID: https://orcid.org/0000-0003-4443-8605)
- Zhiyuan Yang (ORCID: https://orcid.org/0000-0003-1238-3371)
- Zaiyu Wang (ORCID: https://orcid.org/0000-0002-9273-1374)
- Wenbo Huang (ORCID: https://orcid.org/0000-0001-7534-6012)
- Xuanang Luo
- Wenyu Yang (ORCID: https://orcid.org/0009-0009-1946-0940)
Institutions
- Lawrence Berkeley National Laboratory (US)
- Hong Kong University of Science and Technology (HK)
- Tsinghua–Berkeley Shenzhen Institute (CN)
- University of Hong Kong (HK)
- South China University of Technology (CN)
- Tsinghua University (CN)
Publication Details
- Journal
- Advanced Energy Materials
- Published
- 2024-09-16
- DOI
- https://doi.org/10.1002/aenm.202403259
- Citations
- 18
- Primary Topic
- Organic Electronics and Photovoltaics
- Type
- article
- Field-Weighted Citation Impact
- 3.76
Funders
- National Natural Science Foundation of China
- Fundamental Research Funds for the Central Universities
- Basic and Applied Basic Research Foundation of Guangdong Province