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BODIPY-Based Macrostructures: A Design Strategy toward Enhancing the Efficiency of Dye-Sensitized Solar Cells
Tahere Kheshti1, Fazel Shojaei2, Afshan Mohajeri1
1Department of Chemistry, College of Sciences, Shiraz University, Shiraz 7194684795, Iran.
The Journal of Physical Chemistry. A
|May 1, 2024
Summary
Boron dipyrromethene (BODIPY) dyes show promise for solar cells. Linear configurations and thienyl-thiophene linkers significantly boost efficiency, offering potential for advanced organic dyes.
Area of Science:
- Materials Science
- Photovoltaics
- Organic Chemistry
Background:
- Boron dipyrromethene (BODIPY) dyes are metal-free dyes with good thermal stability and tunable properties.
- Their application in dye-sensitized solar cells (DSSCs) is limited by low power conversion efficiency.
Purpose of the Study:
- To improve the photophysical properties and photovoltaic performance of BODIPY dyes.
- To investigate the effect of linear and cyclic macrostructures with various π-linkers on BODIPY dimers.
Main Methods:
- Theoretical calculations of structural, electronic, and optical properties.
- Evaluation of photovoltaic performance for BODIPY dimers with butadiyne, phenyl, and thiophene linkers.
- Comparison of linear versus macrocyclic configurations.
Main Results:
- Linear BODIPY dimers generally outperform cyclic counterparts due to enhanced π-conjugation and light harvesting.
- Cyclic BODIPY dyes with phenyl linkers achieved up to 9% efficiency.
- Linear BODIPY dimers with thienyl-thiophene linkers showed up to 15% efficiency with reduced charge recombination.
Conclusions:
- Linear BODIPY macrostructures offer superior performance for DSSCs.
- Thienyl-thiophene linked linear BODIPY dimers are promising candidates for high-efficiency organic dyes in solar cells.
