Abstract
Three novel organic dyes coded as FHD4‐1, FHD4‐2, and FHD4‐3 featuring spiro[dibenzo[3,4:6,7]cyclohepta[1,2‐b]quinoxaline‐10,9′‐fluorene] (SDBQX) moieties are designed to inhibit dye aggregation to improve the performance of dye‐sensitized solar cells (DSSCs). The consistent absorption onsets of FHD4‐1, FHD4‐2, and FHD4‐3 in solutions and adsorbed on TiO2 films indicate that these dyes are aggregation‐free dyes. Therefore, coadsorption with chenodeoxycholic acid (CDCA) of these three dyes reduces the performance of DSSCs because no inhibition effect for dye aggregation is needed, but, on the contrary, the dye loading amount is reduced after addition of CDCA.
Highlights
Wide attention and been well develmoieties are designed to inhibit dye aggregation to improve the performance of dye-sensitized solar cells (DSSCs)
DSSCs because no inhibition effect for dye aggregation is needed, but, on the as porphyrin dyes, N-annulated perylene contrary, the dye loading amount is reduced after addition of chenodeoxycholic acid (CDCA)
We have reported a series of D–A–π–A organic dyes
Summary
Wide attention and been well develmoieties are designed to inhibit dye aggregation to improve the performance of dye-sensitized solar cells (DSSCs). G. Shao Shenzhen Research Institute Sun Yat-sen University Shenzhen 518057, China designed three organic dyes (FHD4-1, FHD4-2, and FHD4-3) by replacing the electron donor of FHD4 with electron donor groups adopted long alkyl chains.
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