Journal
CHINESE JOURNAL OF POLYMER SCIENCE
Volume 40, Issue 8, Pages 960-967Publisher
SPRINGER
DOI: 10.1007/s10118-022-2769-2
Keywords
Polymer solar cells; Polymer acceptor; Low cost; Power-conversion efficiency
Categories
Funding
- National Natural Science Foundation of China [22022509, 51873140, 51820105003]
- Jiangsu Provincial Natural Science Foundation [BK20190095]
- Natural Science Foundation of the Jiangsu Higher Education Institutions of China [21KJA150006]
- Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD)
- Collaborative Innovation Center of Suzhou Nano Science and Technology
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Polymerizing narrow bandgap small molecules to design efficient polymer acceptors for all-polymer solar cells is a promising strategy. In this study, nonfused-core small molecule acceptors were used to design high-performance PSMAs with simple synthetic procedures. These PSMAs showed higher figure-of-merit value compared to their fused-ring counterparts.
Polymerizing the narrow bandgap small-molecule architecture with a conjugated linking unit (or called the polymerized small molecule acceptors (PSMAs)) is a promising strategy to design polymer acceptors for efficient all polymer solar cells (all-PSCs). Currently, the fused-ring-based small molecule acceptors (SMAs) are preferred monomers to design efficient PSMAs, leaving the challenge of reducing the materials cost. In this work, we firstly employ nonfused-core SMA with simple synthetic procedures to design PSMAs (namely PBTI-H, PBTI-F and PBTI-Cl) to address this issue. Relative to the fused-ring based counterparts, these three PSMAs exhibit much higher figure-of-merit value. Additionally, a power-conversion efficiency of 8.80% is achieved in the PBTI-Cl-based all-PSC. The results offer an attractive approach to design low-cost PSMAs for efficient all-PSCs.
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