Core and End-Capped Engineering as a Powerful Tool in the Search of Long-Term High-Performance Dye-Sensitized Solar...

Area of Science:

• Materials Science
• Photovoltaics
• Organic Chemistry

Background:

• Dye-sensitized solar cells (DSSCs) are a promising photovoltaic technology.
• Developing efficient and stable organic dyes is crucial for advancing DSSCs.

Purpose of the Study:

• To design and synthesize novel D-π-A organic dyes for DSSCs.
• To investigate the structure-property relationships of these dyes.
• To evaluate their performance in solar cell applications.

Main Methods:

• Rational design and synthesis of four D-π-A organic dyes: TA-BTD-CNCOOH, OMeTA-BTD-CNCOOH, TA-Y6-CNCOOH, and OMeTA-Y6-CNCOOH.
• Characterization of photophysical and electrochemical properties.
• Fabrication and testing of dye-sensitized solar cells using these dyes.

Main Results:

• The synthesized organic dyes exhibited favorable photophysical and electrochemical properties.
• Maximum power conversion efficiencies (PCEs) of 9.05% (outdoor) and 18.5% (indoor) were achieved.
• The TA-BTD-CNCOOH dye demonstrated excellent long-term stability, maintaining performance for over 3,360 hours.

Conclusions:

• The designed D-π-A organic dyes show high potential for efficient solar energy conversion.
• TA-BTD-CNCOOH is a highly stable and efficient dye for dye-sensitized solar cells.
• Further research into structure-performance optimization can lead to improved DSSC technologies.