Theoretical design of D-π-A system new dyes candidate for DSSC application

Area of Science:

• Materials Science
• Photovoltaics
• Organic Chemistry

Background:

• Dye-sensitized solar cells (DSSCs) are a promising renewable energy technology.
• Key characteristics include air stability, ease of synthesis, and interesting photovoltaic properties.
• Organic dyes are crucial components influencing DSSC performance.

Purpose of the Study:

• To investigate the optoelectronic and photovoltaic properties of six novel phenothiazine (PTZ)-based organic dyes.
• To analyze the impact of bridging core modifications on molecular properties.
• To identify potential high-performance sensitizers for DSSC applications.

Main Methods:

• Density Functional Theory (DFT) calculations.
• Utilized the B3LYP exchange-correlation functional with 6-31G (d, p) basis set.
• Employed time-dependent DFT (TD-DFT) for electronic and optical property analysis.

Main Results:

• Evaluated structural, photovoltaic, electronic, and optical properties of six designed dyes (D1-D6).
• The study identified specific structural modifications influencing dye performance.
• Obtained results indicate favorable optoelectronic characteristics for DSSC applications.

Conclusions:

• The designed phenothiazine-based organic dyes exhibit promising properties for DSSC applications.
• These molecules are suggested as potential efficient sensitizers.
• This theoretical study provides a foundation for synthesizing improved DSSC sensitizers.