1 research outputs found
Structurally Simple and Easily Accessible Perylenes for Dye-Sensitized Solar Cells Applicable to Both 1 Sun and Dim-Light Environments
The
need for low-cost and highly efficient dyes for dye-sensitized solar
cells under both the sunlight and dim light environments is growing.
We have devised <b>GJ</b>-series push–pull organic dyes
which require only four synthesis steps. These dyes feature a linear
molecular structure of donor–perylene–ethynylene–arylcarboxylic
acid, where donor represents <i>N</i>,<i>N</i>-diarylamino group and arylcarboxylic groups represent benzoic, thienocarboxylic,
2-cyano-3-phenylacrylic, 2-cyano-3-thienoacrylic, and 4-benzoÂ[<i>c</i>]Â[1,2,5]Âthiadiazol-4-yl-benzoic groups. In this study,
we demonstrated that a dye without tedious and time-consuming synthesis
efforts can perform efficiently. Under the illumination of AM1.5G
simulated sunlight, the benzothiadiazole-benzoic-containing <b>GJ-BP</b> dye shows the best power conversion efficiency (PCE)
of 6.16% with <i>V</i><sub>OC</sub> of 0.70 V and <i>J</i><sub>SC</sub> of 11.88 mA cm<sup>–2</sup> using
liquid iodide-based electrolyte. It also shows high performance in
converting light of 6000 lx light intensity, that is, incident power
of ca. 1.75 mW cm<sup>–2</sup>, to power output of 0.28 mW
cm<sup>–2</sup> which equals a PCE of 15.79%. Interestingly,
the benzoic-containing dye <b>GJ-P</b> with a simple molecular
structure has comparable performance in generating power output of
0.26 mW cm<sup>–2</sup> (PCE of 15.01%) under the same condition
and is potentially viable toward future application