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Updated: Jun 14, 2026
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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
Solution-processed organic photovoltaic cells with anthracene derivatives
Dae Sung Chung1, Jong Won Park, Won Min Yun
1Organic Electronics Laboratory, Department of Chemical Engineering, Pohang University of Science and Technology, Pohang, 790-784, Korea.
Chemsuschem
|March 31, 2010
Summary
New organic solar cells utilize novel triisopropylsilylethynyl anthracene (TIPSAnt) derivatives as electron donors with PCBM. These TIPSAnt-based devices achieve power conversion efficiencies up to 1.4%, showing promise for efficient photovoltaic applications.
Area of Science:
- Organic electronics
- Photovoltaics
- Materials science
Background:
- Small-molecule bulk heterojunction (BHJ) solar cells offer tunable properties.
- Electron donor materials are crucial for efficient charge separation in BHJ devices.
- Stability and processability are key challenges in organic photovoltaic development.
Purpose of the Study:
- To synthesize and characterize novel triisopropylsilylethynyl anthracene (TIPSAnt) derivatives as electron donors.
- To investigate the compatibility and photovoltaic performance of TIPSAnt derivatives with PCBM.
- To explore the impact of blending ratios on film morphology and device efficiency.
Main Methods:
- Fabrication of solution-processed small-molecule BHJ photovoltaic cells.
- Synthesis of TIPSAnt derivatives (TIPSAntNa and TIPSAntBT).
- UV/Vis spectroscopy and photoluminescence quenching measurements.
- Device characterization including mobility and power conversion efficiency measurements.
Main Results:
- TIPSAnt derivatives exhibit stability against Diels-Alder reactions with PCBM.
- Exciton diffusion lengths were determined to be 5 nm for TIPSAntBT and 3 nm for TIPSAntNa.
- Blending TIPSAntBT with PCBM resulted in films with adequate charge mobilities.
- Morphology transitioned from phase-segregated to amorphous with increasing PCBM content.
- Power conversion efficiencies reached up to 1.4% for TIPSAntBT:PCBM devices.
Conclusions:
- TIPSAnt derivatives are promising, stable electron donors for organic photovoltaics.
- Optimizing blend morphology is critical for achieving higher efficiencies.
- Solution-processed BHJ solar cells based on TIPSAnt:PCBM demonstrate viable photovoltaic performance.
