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Recent Development on Narrow Bandgap Conjugated Polymers for Polymer Solar Cells
Yueyue Gao1,2, Ming Liu3,4, Yong Zhang5
1School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, China. gaoyueyuewang@126.com.
Polymers
|April 12, 2019
Summary
Recent advances in polymer solar cells (PSCs) focus on narrow bandgap conjugated polymers. These materials, particularly in bulk heterojunction (BHJ) structures, show promise for efficient and competitive solar energy conversion.
Area of Science:
- Materials Science
- Renewable Energy
- Organic Electronics
Background:
- Polymer solar cells (PSCs) are emerging as a competitive alternative to silicon-based solar cells.
- The bulk heterojunction (BHJ) structure, a blend of conjugated polymer and fullerene, is key to high-performance PSCs.
- Current power conversion efficiencies (PCEs) for BHJ PSCs have surpassed 11%.
Purpose of the Study:
- To review recent developments in narrow bandgap conjugated polymers for PSCs.
- To highlight important acceptor materials used in donor-acceptor (D-A) type polymers for high efficiency.
- To discuss emerging donor-π-acceptor (D-π-A) side chain polymers.
Main Methods:
- Review of scientific literature on conjugated polymers for PSCs.
- Analysis of donor-acceptor and donor-π-acceptor polymer architectures.
- Discussion of material properties including band-gaps and energy levels.
Main Results:
- Narrow bandgap conjugated polymers are crucial for advancing PSC technology.
- Specific acceptor units and D-π-A designs significantly impact photovoltaic performance.
- Optimized polymer structures lead to enhanced power conversion efficiencies.
Conclusions:
- Narrow bandgap conjugated polymers are vital for the future of efficient PSCs.
- Further research into D-A and D-π-A architectures can unlock higher PCEs.
- Understanding material properties is key to designing next-generation polymer solar cells.
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