Impact of Donor-Acceptor Positions to Tune Efficient Dye-Sensitized Solar Cells: DFT/TD-DFT Study
Abstract
The anthracene molecule was adopted as a π-conjugation bridge for the D–π–A system with a nitro group CH3 and a nitro group NO2 acting as donor and acceptor groups. The influence of the anthracene nature junction with the donor and acceptor sides was evaluated on the performance of a dye-sensitized solar cell (DSSC). The donor and acceptor positions in this study changed around the anthracene. Density functional theory (DFT) has been utilized at the B3LYP theory level. The donor group could bind to anthracene at two specific sites, while the acceptor group could bind to the remaining anthracene sites, excluding the donor group site. The photovoltaic and electronic properties have been investigated. The results showed that the best-performing molecular dyes, D10A7, D10A8, and D1A6, are suitable for use as sensitizers due to their energetically favorable photovoltaic parameters, which are attributed to the potential for electron injection and regeneration.
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References
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