Synthesis and photovoltaic characterization of triarylamine-substituted quinoxaline push--pull dyes to improve the performance of dye-sensitized solar cells
Makaleler > Tam Makale · 2017
Yazarlar: Kadir Demirak, MUSTAFA CAN, Cihan Ozsoy, Mesude Zeliha Yigit, Burak GÜLTEKİN, ŞERAFETTİN DEMİÇ, Ceylan ZAFER
TURKISH JOURNAL OF CHEMISTRY, SCI Expanded İndekslerine Giren Dergi, Uluslararası, Wos, 2017, cilt 41, ss 309-322
DOI: 10.3906/kim-1603-15
Özet
Novel unsymmetrical organic sensitizers having donor, $\pi $-spacer, and anchoring groups were designed and synthesized for dye-sensitized solar cell (DSSC) application. The dyes 3-{4-[7-(4-{bis[4-(hexyl)phenyl]amino} phenyl)-11,12-dibutoxy-1,4,5,8-tetrahydrodibenzo [a, c] phenazine-2-yl]phenyl} -2-cyano acrylic acid (KD-148) and 3-{5-[7-(4-{bis[4-(hexyloxy)phenyl]amino} phenyl)-11,12-dibutoxy-1,4,5,8-tetrahydrodibenzo [a, c] phenazine-2-yl]-2-thienyl} -2-cyano acrylic acid (KD-150) were anchored onto TiO$_{2}$ and tested with ionic liquid electrolyte. The monochromatic incident photon-to-current conversion efficiencies (IPCE) of the dyes were 50% and 60% at 420 nm, respectively. The KD-150-sensitized solar cell gave a short-circuit current (I$_{SC})$ of 7.37 mA/cm$^{2}$, an open-circuit voltage (V$_{oc})$ of 560 mV, a fill factor (FF) of 0.56, and overall conversion efficiency ($\eta )$ of 2.32% whereas the standard dye Z-907 dye exhibited 14.51 mA/cm$^{2}$ of I$_{SC}$, 630 mV of V$_{oc}$, 0.45 of FF, and 4.08% of $\eta $ under AM 1.5 illumination with power of 100 mW/cm$^{2}$.