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Morphology Control for Fully Printable Organic–Inorganic Bulk-heterojunction Solar Cells Based on a Ti-alkoxide and Semiconducting Polymer
Published on: January 10, 2017
Tri-diketopyrrolopyrrole molecular donor materials for high-performance solution-processed bulk heterojunction solar
Jianhua Liu1, Yanming Sun, Preecha Moonsin
1Center for Polymers and Organic Solids, Department of Chemistry and Biochemistry, University of California, Santa Barbara, CA, 93106, United States.
Advanced Materials (Deerfield Beach, Fla.)
|August 16, 2013
Summary
Two novel high-performance donor molecules featuring three diketopyrrolopyrrole (DPP) chromophores were synthesized. These tri-DPP molecules achieved power conversion efficiencies of up to 5.5% in organic solar cells.
Area of Science:
- Organic electronics
- Materials science
- Photovoltaics
Background:
- Diketopyrrolopyrrole (DPP)-based materials are crucial for high-performance organic solar cells.
- Developing novel donor molecules with enhanced properties is essential for advancing photovoltaic technology.
Purpose of the Study:
- To synthesize and characterize two new high-performance donor molecules with a tri-DPP architecture.
- To evaluate the performance of these molecules in organic solar cells when blended with a fullerene acceptor.
Main Methods:
- Synthesis of two tri-DPP donor molecules with varying alkyl substitutions.
- Fabrication of bulk heterojunction organic solar cells using these donors and PC71 BM acceptor.
- Characterization of material properties and device performance, including power conversion efficiency (PCE).
Main Results:
- Successful synthesis and characterization of two novel tri-DPP donor molecules.
- Organic solar cells fabricated with these donors achieved power conversion efficiencies of 4.8% and 5.5%.
- The structural difference in alkyl substitutions influenced the photovoltaic performance.
Conclusions:
- The developed tri-DPP donor molecules show promise for high-efficiency organic solar cells.
- Molecular design, specifically alkyl substitution, plays a significant role in optimizing device performance.
- Further research into DPP-based materials could lead to more efficient and cost-effective solar energy solutions.
