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X- and H-shape two dimensional conjugated oligomers with anthracene as the node
Weibin Cui1, Yingying Fu, Yao Qu
1State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Science, Changchun 130022, PR China.
Chemistry, an Asian Journal
|March 4, 2010
Summary
New two-dimensional (2D) conjugated oligomers show broader absorption and narrower bandgaps than model compounds. These X- and H-mers achieved a 0.53% power conversion efficiency in bulk heterojunction solar cells.
Area of Science:
- Organic Chemistry
- Materials Science
- Photovoltaics
Background:
- Two-dimensional (2D) conjugated oligomers are of interest for organic electronics.
- Anthracene derivatives offer a versatile scaffold for tuning electronic properties.
Purpose of the Study:
- Synthesize and characterize X- and H-shaped 2D conjugated oligomers (X- and H-mers).
- Investigate the impact of conjugation on optical and electronic properties.
- Evaluate their performance in bulk heterojunction (BHJ) solar cells.
Main Methods:
- Synthesis of X- and H-mers by introducing conjugated segments onto anthracene.
- Spectroscopic analysis (absorption spectra).
- Computational studies (HOMO/LUMO analysis).
- Fabrication and testing of BHJ solar cells using PCBM as acceptor.
Main Results:
- X- and H-mers exhibit broader absorption spectra compared to model compounds.
- Narrower energy bandgaps were observed for X- and H-mers.
- Computational studies confirmed the 2D conjugation of X- and H-mers.
- BHJ solar cells achieved a power conversion efficiency (PCE) of up to 0.53%.
Conclusions:
- The synthesized X- and H-mers possess favorable electronic and optical properties for photovoltaic applications.
- 2D conjugation significantly influences the material's characteristics.
- Further optimization holds promise for improved solar cell performance.
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